/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-tiling/mlceu2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 18:46:37,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 18:46:37,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 18:46:37,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 18:46:37,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 18:46:37,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 18:46:37,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 18:46:37,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 18:46:37,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 18:46:37,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 18:46:37,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 18:46:37,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 18:46:37,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 18:46:37,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 18:46:37,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 18:46:37,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 18:46:37,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 18:46:37,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 18:46:37,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 18:46:37,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 18:46:37,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 18:46:37,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 18:46:37,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 18:46:37,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 18:46:37,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 18:46:37,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 18:46:37,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 18:46:37,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 18:46:37,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 18:46:37,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 18:46:37,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 18:46:37,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 18:46:37,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 18:46:37,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 18:46:37,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 18:46:37,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 18:46:37,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 18:46:37,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 18:46:37,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 18:46:37,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 18:46:37,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 18:46:37,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 18:46:37,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 18:46:37,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 18:46:37,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 18:46:37,952 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 18:46:37,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 18:46:37,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 18:46:37,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 18:46:37,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 18:46:37,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 18:46:37,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 18:46:37,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 18:46:37,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 18:46:37,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 18:46:37,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 18:46:37,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 18:46:37,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 18:46:37,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 18:46:37,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 18:46:37,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:46:37,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 18:46:37,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 18:46:37,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 18:46:37,954 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 18:46:37,954 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 18:46:38,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 18:46:38,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 18:46:38,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 18:46:38,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 18:46:38,161 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 18:46:38,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mlceu2.c [2022-01-31 18:46:38,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a046ee493/40b1fd391a91432fb0d244b0b75da927/FLAG74eaea00c [2022-01-31 18:46:38,562 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 18:46:38,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu2.c [2022-01-31 18:46:38,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a046ee493/40b1fd391a91432fb0d244b0b75da927/FLAG74eaea00c [2022-01-31 18:46:38,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a046ee493/40b1fd391a91432fb0d244b0b75da927 [2022-01-31 18:46:38,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 18:46:38,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 18:46:38,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 18:46:38,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 18:46:38,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 18:46:38,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:46:38" (1/1) ... [2022-01-31 18:46:38,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77eb59d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38, skipping insertion in model container [2022-01-31 18:46:38,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:46:38" (1/1) ... [2022-01-31 18:46:38,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 18:46:38,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 18:46:38,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu2.c[397,410] [2022-01-31 18:46:38,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:46:38,715 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 18:46:38,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu2.c[397,410] [2022-01-31 18:46:38,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:46:38,762 INFO L208 MainTranslator]: Completed translation [2022-01-31 18:46:38,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38 WrapperNode [2022-01-31 18:46:38,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 18:46:38,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 18:46:38,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 18:46:38,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 18:46:38,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38" (1/1) ... [2022-01-31 18:46:38,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38" (1/1) ... [2022-01-31 18:46:38,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38" (1/1) ... [2022-01-31 18:46:38,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38" (1/1) ... [2022-01-31 18:46:38,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38" (1/1) ... [2022-01-31 18:46:38,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38" (1/1) ... [2022-01-31 18:46:38,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38" (1/1) ... [2022-01-31 18:46:38,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 18:46:38,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 18:46:38,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 18:46:38,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 18:46:38,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38" (1/1) ... [2022-01-31 18:46:38,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:46:38,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 18:46:38,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 18:46:38,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 18:46:38,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 18:46:38,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 18:46:38,849 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 18:46:38,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 18:46:38,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 18:46:38,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 18:46:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 18:46:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 18:46:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 18:46:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 18:46:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 18:46:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 18:46:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 18:46:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 18:46:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 18:46:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 18:46:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 18:46:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 18:46:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 18:46:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 18:46:38,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 18:46:38,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 18:46:38,914 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 18:46:38,915 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 18:46:39,042 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 18:46:39,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 18:46:39,046 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 18:46:39,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:46:39 BoogieIcfgContainer [2022-01-31 18:46:39,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 18:46:39,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 18:46:39,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 18:46:39,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 18:46:39,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 06:46:38" (1/3) ... [2022-01-31 18:46:39,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2245033d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:46:39, skipping insertion in model container [2022-01-31 18:46:39,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:46:38" (2/3) ... [2022-01-31 18:46:39,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2245033d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:46:39, skipping insertion in model container [2022-01-31 18:46:39,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:46:39" (3/3) ... [2022-01-31 18:46:39,053 INFO L111 eAbstractionObserver]: Analyzing ICFG mlceu2.c [2022-01-31 18:46:39,056 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 18:46:39,056 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 18:46:39,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 18:46:39,128 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 18:46:39,129 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 18:46:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:46:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 18:46:39,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:39,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:39,154 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:39,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1084482969, now seen corresponding path program 1 times [2022-01-31 18:46:39,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:39,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658414138] [2022-01-31 18:46:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:39,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:39,215 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:39,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:39,405 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:39,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658414138] [2022-01-31 18:46:39,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1658414138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:39,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:39,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 18:46:39,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585261869] [2022-01-31 18:46:39,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:39,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 18:46:39,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:39,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 18:46:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:46:39,436 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:46:39,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:39,507 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2022-01-31 18:46:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 18:46:39,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-31 18:46:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:39,517 INFO L225 Difference]: With dead ends: 48 [2022-01-31 18:46:39,517 INFO L226 Difference]: Without dead ends: 24 [2022-01-31 18:46:39,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:46:39,522 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:39,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:46:39,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-31 18:46:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-01-31 18:46:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 18:46:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-01-31 18:46:39,553 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2022-01-31 18:46:39,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:39,553 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-01-31 18:46:39,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:46:39,553 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-01-31 18:46:39,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 18:46:39,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:39,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:39,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 18:46:39,555 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:39,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:39,556 INFO L85 PathProgramCache]: Analyzing trace with hash -854277850, now seen corresponding path program 1 times [2022-01-31 18:46:39,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:39,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645502229] [2022-01-31 18:46:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:39,568 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:39,568 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:39,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:39,572 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:39,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:39,677 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:39,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645502229] [2022-01-31 18:46:39,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1645502229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:39,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:39,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:46:39,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023784130] [2022-01-31 18:46:39,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:39,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:46:39,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:39,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:46:39,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:46:39,679 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:46:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:39,734 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-01-31 18:46:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:46:39,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-01-31 18:46:39,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:39,735 INFO L225 Difference]: With dead ends: 36 [2022-01-31 18:46:39,735 INFO L226 Difference]: Without dead ends: 25 [2022-01-31 18:46:39,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:46:39,736 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:39,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:46:39,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-31 18:46:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-31 18:46:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 18:46:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-01-31 18:46:39,742 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 17 [2022-01-31 18:46:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:39,742 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-01-31 18:46:39,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:46:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-01-31 18:46:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 18:46:39,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:39,743 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:39,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 18:46:39,743 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:39,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1738559493, now seen corresponding path program 1 times [2022-01-31 18:46:39,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:39,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379946670] [2022-01-31 18:46:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:39,747 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:39,749 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:39,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:39,752 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:39,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:39,837 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:39,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379946670] [2022-01-31 18:46:39,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1379946670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:39,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:39,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:46:39,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795586689] [2022-01-31 18:46:39,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:39,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:46:39,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:39,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:46:39,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:46:39,839 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:46:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:39,915 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-01-31 18:46:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:46:39,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-01-31 18:46:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:39,918 INFO L225 Difference]: With dead ends: 49 [2022-01-31 18:46:39,918 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 18:46:39,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:46:39,919 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:39,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 30 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:46:39,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 18:46:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2022-01-31 18:46:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 18:46:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-01-31 18:46:39,927 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2022-01-31 18:46:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:39,927 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-01-31 18:46:39,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:46:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-01-31 18:46:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 18:46:39,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:39,928 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:39,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 18:46:39,928 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:39,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:39,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1876349433, now seen corresponding path program 2 times [2022-01-31 18:46:39,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:39,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691148260] [2022-01-31 18:46:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:39,931 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:39,931 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:39,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:39,932 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:40,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:40,123 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691148260] [2022-01-31 18:46:40,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1691148260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:40,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:40,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:46:40,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484300309] [2022-01-31 18:46:40,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:40,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:46:40,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:46:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:46:40,125 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:46:40,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:40,293 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-01-31 18:46:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 18:46:40,293 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-01-31 18:46:40,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:40,298 INFO L225 Difference]: With dead ends: 42 [2022-01-31 18:46:40,298 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 18:46:40,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:46:40,306 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:40,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 70 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:46:40,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 18:46:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2022-01-31 18:46:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:46:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-01-31 18:46:40,313 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 20 [2022-01-31 18:46:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:40,314 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-01-31 18:46:40,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:46:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-01-31 18:46:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 18:46:40,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:40,315 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:40,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 18:46:40,315 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:40,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:40,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1098859586, now seen corresponding path program 1 times [2022-01-31 18:46:40,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:40,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030815890] [2022-01-31 18:46:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:40,317 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:40,317 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:40,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:40,318 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 18:46:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:40,438 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:40,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030815890] [2022-01-31 18:46:40,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1030815890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:40,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:40,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:46:40,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121427278] [2022-01-31 18:46:40,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:40,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:46:40,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:40,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:46:40,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:46:40,440 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 18:46:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:40,612 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-01-31 18:46:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 18:46:40,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-01-31 18:46:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:40,620 INFO L225 Difference]: With dead ends: 46 [2022-01-31 18:46:40,621 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 18:46:40,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-01-31 18:46:40,624 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:40,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 89 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:46:40,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 18:46:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-01-31 18:46:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:46:40,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2022-01-31 18:46:40,646 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 28 [2022-01-31 18:46:40,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:40,646 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2022-01-31 18:46:40,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 18:46:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2022-01-31 18:46:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 18:46:40,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:40,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:40,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 18:46:40,648 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:40,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:40,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1407623797, now seen corresponding path program 2 times [2022-01-31 18:46:40,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:40,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599271936] [2022-01-31 18:46:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:40,652 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:40,652 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:40,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:40,653 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:40,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 18:46:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:40,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 18:46:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:40,774 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:40,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599271936] [2022-01-31 18:46:40,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [599271936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:40,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:40,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:46:40,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016594456] [2022-01-31 18:46:40,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:40,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:46:40,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:40,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:46:40,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:46:40,777 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:46:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:40,918 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2022-01-31 18:46:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:46:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2022-01-31 18:46:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:40,919 INFO L225 Difference]: With dead ends: 96 [2022-01-31 18:46:40,920 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 18:46:40,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:46:40,921 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 40 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:40,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 52 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:46:40,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 18:46:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2022-01-31 18:46:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:46:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-01-31 18:46:40,929 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 36 [2022-01-31 18:46:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:40,929 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-01-31 18:46:40,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:46:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-01-31 18:46:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 18:46:40,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:40,930 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:40,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 18:46:40,931 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:40,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1275076596, now seen corresponding path program 3 times [2022-01-31 18:46:40,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:40,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173405832] [2022-01-31 18:46:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:40,934 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:40,934 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:40,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:40,935 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 18:46:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:46:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:41,084 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:41,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173405832] [2022-01-31 18:46:41,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1173405832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:41,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:41,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 18:46:41,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142554710] [2022-01-31 18:46:41,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:41,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 18:46:41,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:41,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 18:46:41,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-31 18:46:41,085 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:46:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:41,311 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2022-01-31 18:46:41,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 18:46:41,311 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2022-01-31 18:46:41,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:41,312 INFO L225 Difference]: With dead ends: 57 [2022-01-31 18:46:41,312 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 18:46:41,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:46:41,313 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:41,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 112 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:46:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 18:46:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-01-31 18:46:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 40 states have internal predecessors, (42), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:46:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2022-01-31 18:46:41,320 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 39 [2022-01-31 18:46:41,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:41,321 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2022-01-31 18:46:41,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 18:46:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2022-01-31 18:46:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 18:46:41,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:41,322 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:41,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 18:46:41,322 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:41,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:41,322 INFO L85 PathProgramCache]: Analyzing trace with hash -198086485, now seen corresponding path program 4 times [2022-01-31 18:46:41,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:41,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096617080] [2022-01-31 18:46:41,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:41,324 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:41,324 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:41,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:41,325 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 18:46:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:46:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:46:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:41,400 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:41,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096617080] [2022-01-31 18:46:41,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1096617080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:41,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:41,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:46:41,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185621771] [2022-01-31 18:46:41,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:41,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:46:41,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:41,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:46:41,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:46:41,402 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:46:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:41,557 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2022-01-31 18:46:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 18:46:41,557 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 47 [2022-01-31 18:46:41,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:41,558 INFO L225 Difference]: With dead ends: 123 [2022-01-31 18:46:41,558 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 18:46:41,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-01-31 18:46:41,559 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:41,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 64 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:46:41,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 18:46:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-01-31 18:46:41,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 43 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:46:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2022-01-31 18:46:41,567 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 47 [2022-01-31 18:46:41,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:41,567 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2022-01-31 18:46:41,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:46:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2022-01-31 18:46:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 18:46:41,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:41,568 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:41,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 18:46:41,569 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1319576116, now seen corresponding path program 5 times [2022-01-31 18:46:41,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:41,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235738222] [2022-01-31 18:46:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:41,571 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:41,571 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:41,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:41,572 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:46:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:46:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:46:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:41,796 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:41,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235738222] [2022-01-31 18:46:41,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1235738222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:41,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:41,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 18:46:41,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237918341] [2022-01-31 18:46:41,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:41,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 18:46:41,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:41,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 18:46:41,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:46:41,797 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:46:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:42,013 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2022-01-31 18:46:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 18:46:42,013 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 50 [2022-01-31 18:46:42,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:42,014 INFO L225 Difference]: With dead ends: 67 [2022-01-31 18:46:42,014 INFO L226 Difference]: Without dead ends: 65 [2022-01-31 18:46:42,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:46:42,015 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:42,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 132 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:46:42,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-31 18:46:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2022-01-31 18:46:42,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.0625) internal successors, (51), 49 states have internal predecessors, (51), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:46:42,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2022-01-31 18:46:42,025 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 50 [2022-01-31 18:46:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:42,025 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2022-01-31 18:46:42,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:46:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2022-01-31 18:46:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 18:46:42,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:42,026 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:42,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 18:46:42,026 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash 557504131, now seen corresponding path program 6 times [2022-01-31 18:46:42,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:42,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444287884] [2022-01-31 18:46:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:42,028 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:42,028 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:42,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:42,029 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:46:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:46:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:46:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:46:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:42,172 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:42,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444287884] [2022-01-31 18:46:42,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1444287884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:42,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:42,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 18:46:42,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411792486] [2022-01-31 18:46:42,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:42,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 18:46:42,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 18:46:42,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-01-31 18:46:42,174 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:46:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:42,351 INFO L93 Difference]: Finished difference Result 150 states and 157 transitions. [2022-01-31 18:46:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 18:46:42,352 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 58 [2022-01-31 18:46:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:42,352 INFO L225 Difference]: With dead ends: 150 [2022-01-31 18:46:42,353 INFO L226 Difference]: Without dead ends: 72 [2022-01-31 18:46:42,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:46:42,354 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 72 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:42,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 74 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:46:42,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-31 18:46:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2022-01-31 18:46:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 52 states have internal predecessors, (54), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:46:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2022-01-31 18:46:42,363 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 58 [2022-01-31 18:46:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:42,363 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2022-01-31 18:46:42,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:46:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2022-01-31 18:46:42,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-31 18:46:42,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:42,364 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:42,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 18:46:42,364 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:42,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:42,364 INFO L85 PathProgramCache]: Analyzing trace with hash 386112194, now seen corresponding path program 7 times [2022-01-31 18:46:42,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:42,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544168605] [2022-01-31 18:46:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:42,366 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:42,366 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:42,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:42,367 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:46:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 18:46:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:46:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:46:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:42,552 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:42,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544168605] [2022-01-31 18:46:42,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1544168605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:42,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:42,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 18:46:42,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608739758] [2022-01-31 18:46:42,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:42,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 18:46:42,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:42,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 18:46:42,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-01-31 18:46:42,554 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:46:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:43,015 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-01-31 18:46:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 18:46:43,016 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 61 [2022-01-31 18:46:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:43,017 INFO L225 Difference]: With dead ends: 79 [2022-01-31 18:46:43,017 INFO L226 Difference]: Without dead ends: 77 [2022-01-31 18:46:43,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2022-01-31 18:46:43,018 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 36 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:43,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 194 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:46:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-01-31 18:46:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2022-01-31 18:46:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 58 states have internal predecessors, (60), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:46:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2022-01-31 18:46:43,027 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 61 [2022-01-31 18:46:43,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:43,028 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2022-01-31 18:46:43,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:46:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-01-31 18:46:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 18:46:43,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:43,028 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:43,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 18:46:43,029 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:43,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:43,029 INFO L85 PathProgramCache]: Analyzing trace with hash -131318407, now seen corresponding path program 8 times [2022-01-31 18:46:43,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:43,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018868497] [2022-01-31 18:46:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:43,031 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:43,031 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:43,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:43,032 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:46:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 18:46:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:46:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:46:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:46:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:43,161 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:43,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018868497] [2022-01-31 18:46:43,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2018868497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:43,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:43,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 18:46:43,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250010350] [2022-01-31 18:46:43,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:43,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 18:46:43,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 18:46:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-31 18:46:43,163 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:46:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:43,377 INFO L93 Difference]: Finished difference Result 177 states and 184 transitions. [2022-01-31 18:46:43,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 18:46:43,377 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 69 [2022-01-31 18:46:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:43,378 INFO L225 Difference]: With dead ends: 177 [2022-01-31 18:46:43,378 INFO L226 Difference]: Without dead ends: 83 [2022-01-31 18:46:43,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:46:43,381 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 80 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:43,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 89 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:46:43,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-01-31 18:46:43,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2022-01-31 18:46:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 60 states have (on average 1.05) internal successors, (63), 61 states have internal predecessors, (63), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:46:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2022-01-31 18:46:43,395 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 69 [2022-01-31 18:46:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:43,395 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2022-01-31 18:46:43,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:46:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2022-01-31 18:46:43,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 18:46:43,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:43,397 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:43,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 18:46:43,397 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:43,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:43,398 INFO L85 PathProgramCache]: Analyzing trace with hash -55006246, now seen corresponding path program 9 times [2022-01-31 18:46:43,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:43,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275190723] [2022-01-31 18:46:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:43,400 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:43,400 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:43,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:43,401 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:46:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:46:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:46:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:46:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:46:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:43,648 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:43,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275190723] [2022-01-31 18:46:43,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [275190723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:43,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:43,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 18:46:43,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172383641] [2022-01-31 18:46:43,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:43,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 18:46:43,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:43,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 18:46:43,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-01-31 18:46:43,649 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:46:44,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:44,182 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2022-01-31 18:46:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 18:46:44,184 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 72 [2022-01-31 18:46:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:44,185 INFO L225 Difference]: With dead ends: 90 [2022-01-31 18:46:44,185 INFO L226 Difference]: Without dead ends: 88 [2022-01-31 18:46:44,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:46:44,185 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 42 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:44,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 237 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:46:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-31 18:46:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2022-01-31 18:46:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 67 states have internal predecessors, (69), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:46:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2022-01-31 18:46:44,199 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 72 [2022-01-31 18:46:44,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:44,200 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2022-01-31 18:46:44,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:46:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2022-01-31 18:46:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 18:46:44,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:44,201 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:44,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 18:46:44,201 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:44,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:44,201 INFO L85 PathProgramCache]: Analyzing trace with hash -894781807, now seen corresponding path program 10 times [2022-01-31 18:46:44,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:44,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575707623] [2022-01-31 18:46:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:44,203 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:44,203 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:44,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:44,205 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:46:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:46:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:46:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:46:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:46:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:46:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:44,353 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:44,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575707623] [2022-01-31 18:46:44,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [575707623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:44,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:44,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 18:46:44,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053788978] [2022-01-31 18:46:44,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:44,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 18:46:44,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:44,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 18:46:44,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-01-31 18:46:44,355 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:46:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:44,586 INFO L93 Difference]: Finished difference Result 204 states and 211 transitions. [2022-01-31 18:46:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 18:46:44,586 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 80 [2022-01-31 18:46:44,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:44,587 INFO L225 Difference]: With dead ends: 204 [2022-01-31 18:46:44,587 INFO L226 Difference]: Without dead ends: 94 [2022-01-31 18:46:44,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:46:44,588 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 80 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:44,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 112 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:46:44,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-31 18:46:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2022-01-31 18:46:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 70 states have internal predecessors, (72), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:46:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2022-01-31 18:46:44,602 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 80 [2022-01-31 18:46:44,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:44,602 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2022-01-31 18:46:44,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:46:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2022-01-31 18:46:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 18:46:44,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:44,603 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:44,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 18:46:44,603 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:44,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:44,603 INFO L85 PathProgramCache]: Analyzing trace with hash -167956080, now seen corresponding path program 11 times [2022-01-31 18:46:44,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:44,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718201034] [2022-01-31 18:46:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:44,605 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:44,605 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:44,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:44,606 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 18:46:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:46:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:46:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:46:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:46:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:46:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:44,876 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:44,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718201034] [2022-01-31 18:46:44,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [718201034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:44,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:44,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 18:46:44,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462019243] [2022-01-31 18:46:44,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:44,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 18:46:44,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:44,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 18:46:44,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:46:44,877 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:46:45,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:45,595 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2022-01-31 18:46:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 18:46:45,596 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 83 [2022-01-31 18:46:45,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:45,599 INFO L225 Difference]: With dead ends: 101 [2022-01-31 18:46:45,599 INFO L226 Difference]: Without dead ends: 99 [2022-01-31 18:46:45,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:46:45,602 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 42 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:45,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 300 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:46:45,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-31 18:46:45,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2022-01-31 18:46:45,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.04) internal successors, (78), 76 states have internal predecessors, (78), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:46:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2022-01-31 18:46:45,618 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 83 [2022-01-31 18:46:45,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:45,618 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2022-01-31 18:46:45,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 18:46:45,619 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2022-01-31 18:46:45,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-31 18:46:45,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:45,619 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:45,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 18:46:45,619 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:45,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:45,620 INFO L85 PathProgramCache]: Analyzing trace with hash 910239303, now seen corresponding path program 12 times [2022-01-31 18:46:45,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:45,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720719200] [2022-01-31 18:46:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:45,621 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:45,621 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:45,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:45,623 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:45,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 18:46:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:45,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:46:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:45,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:46:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:45,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:46:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:45,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:46:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:46:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:46:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:45,780 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:45,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720719200] [2022-01-31 18:46:45,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1720719200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:45,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:45,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 18:46:45,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846303598] [2022-01-31 18:46:45,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:45,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 18:46:45,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 18:46:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-01-31 18:46:45,781 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:46:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:46,083 INFO L93 Difference]: Finished difference Result 231 states and 238 transitions. [2022-01-31 18:46:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 18:46:46,083 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 91 [2022-01-31 18:46:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:46,084 INFO L225 Difference]: With dead ends: 231 [2022-01-31 18:46:46,084 INFO L226 Difference]: Without dead ends: 105 [2022-01-31 18:46:46,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:46:46,085 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 100 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:46,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 119 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:46:46,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-31 18:46:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 98. [2022-01-31 18:46:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 79 states have internal predecessors, (81), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:46:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2022-01-31 18:46:46,099 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 91 [2022-01-31 18:46:46,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:46,099 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2022-01-31 18:46:46,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:46:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2022-01-31 18:46:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-31 18:46:46,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:46,100 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:46,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 18:46:46,100 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:46,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1987192296, now seen corresponding path program 13 times [2022-01-31 18:46:46,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:46,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302947183] [2022-01-31 18:46:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:46,102 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:46,102 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:46,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:46,103 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:46:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:46,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:46:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:46,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:46:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:46,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:46:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:46,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:46:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:46,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:46:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:46,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:46:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:46,369 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:46,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302947183] [2022-01-31 18:46:46,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1302947183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:46,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:46,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 18:46:46,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734007746] [2022-01-31 18:46:46,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:46,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 18:46:46,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:46,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 18:46:46,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2022-01-31 18:46:46,370 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand has 24 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 22 states have internal predecessors, (58), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:46:47,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:47,149 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2022-01-31 18:46:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 18:46:47,150 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 22 states have internal predecessors, (58), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 94 [2022-01-31 18:46:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:47,150 INFO L225 Difference]: With dead ends: 112 [2022-01-31 18:46:47,151 INFO L226 Difference]: Without dead ends: 110 [2022-01-31 18:46:47,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 18:46:47,152 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 46 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:47,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 353 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:46:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-01-31 18:46:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2022-01-31 18:46:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 85 states have internal predecessors, (87), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:46:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2022-01-31 18:46:47,170 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 94 [2022-01-31 18:46:47,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:47,170 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2022-01-31 18:46:47,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 22 states have internal predecessors, (58), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 18:46:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2022-01-31 18:46:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-31 18:46:47,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:47,172 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:47,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 18:46:47,172 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:47,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash 872956575, now seen corresponding path program 14 times [2022-01-31 18:46:47,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:47,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087929511] [2022-01-31 18:46:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:47,174 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:47,174 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:47,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:47,175 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:47,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:46:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:47,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:46:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:46:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:46:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:47,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:46:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:47,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:46:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:47,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:46:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:46:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:47,387 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:47,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087929511] [2022-01-31 18:46:47,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2087929511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:47,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:47,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 18:46:47,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776567674] [2022-01-31 18:46:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:47,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 18:46:47,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:47,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 18:46:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:46:47,388 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 21 states have internal predecessors, (61), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:46:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:47,690 INFO L93 Difference]: Finished difference Result 258 states and 265 transitions. [2022-01-31 18:46:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 18:46:47,690 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 21 states have internal predecessors, (61), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 102 [2022-01-31 18:46:47,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:47,691 INFO L225 Difference]: With dead ends: 258 [2022-01-31 18:46:47,691 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 18:46:47,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:46:47,692 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 108 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:47,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 139 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:46:47,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 18:46:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2022-01-31 18:46:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 88 states have internal predecessors, (90), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:46:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2022-01-31 18:46:47,707 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 102 [2022-01-31 18:46:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:47,707 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2022-01-31 18:46:47,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 21 states have internal predecessors, (61), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:46:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2022-01-31 18:46:47,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-31 18:46:47,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:47,709 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:47,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 18:46:47,709 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:47,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1068833698, now seen corresponding path program 15 times [2022-01-31 18:46:47,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:47,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757362846] [2022-01-31 18:46:47,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:47,711 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:47,711 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:47,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:47,712 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:48,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:46:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:48,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:46:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:46:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:48,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:46:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:46:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:46:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:46:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:48,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:46:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:48,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:48,048 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:48,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757362846] [2022-01-31 18:46:48,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [757362846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:48,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:48,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 18:46:48,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20828643] [2022-01-31 18:46:48,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:48,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 18:46:48,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:48,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 18:46:48,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2022-01-31 18:46:48,049 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand has 26 states, 25 states have (on average 2.56) internal successors, (64), 24 states have internal predecessors, (64), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:46:48,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:48,874 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2022-01-31 18:46:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 18:46:48,874 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.56) internal successors, (64), 24 states have internal predecessors, (64), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 105 [2022-01-31 18:46:48,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:48,875 INFO L225 Difference]: With dead ends: 123 [2022-01-31 18:46:48,875 INFO L226 Difference]: Without dead ends: 121 [2022-01-31 18:46:48,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:46:48,876 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 52 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:48,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 406 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:46:48,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-31 18:46:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2022-01-31 18:46:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 93 states have (on average 1.032258064516129) internal successors, (96), 94 states have internal predecessors, (96), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:46:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2022-01-31 18:46:48,889 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 105 [2022-01-31 18:46:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:48,889 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2022-01-31 18:46:48,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.56) internal successors, (64), 24 states have internal predecessors, (64), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 18:46:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2022-01-31 18:46:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-31 18:46:48,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:48,890 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:48,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 18:46:48,890 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:48,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:48,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1204693781, now seen corresponding path program 16 times [2022-01-31 18:46:48,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:48,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996763512] [2022-01-31 18:46:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:48,894 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:48,894 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:48,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:48,895 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:46:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:46:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:46:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:46:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:46:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:46:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:46:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:46:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:46:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:49,080 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:49,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996763512] [2022-01-31 18:46:49,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1996763512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:49,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:49,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 18:46:49,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110936387] [2022-01-31 18:46:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:49,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 18:46:49,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:49,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 18:46:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-01-31 18:46:49,081 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 23 states have internal predecessors, (67), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:46:49,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:49,443 INFO L93 Difference]: Finished difference Result 285 states and 292 transitions. [2022-01-31 18:46:49,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 18:46:49,444 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 23 states have internal predecessors, (67), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 113 [2022-01-31 18:46:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:49,445 INFO L225 Difference]: With dead ends: 285 [2022-01-31 18:46:49,446 INFO L226 Difference]: Without dead ends: 127 [2022-01-31 18:46:49,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:46:49,447 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 152 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:49,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 134 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:46:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-31 18:46:49,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2022-01-31 18:46:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 96 states have (on average 1.03125) internal successors, (99), 97 states have internal predecessors, (99), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:46:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2022-01-31 18:46:49,466 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 113 [2022-01-31 18:46:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:49,466 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2022-01-31 18:46:49,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 23 states have internal predecessors, (67), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:46:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2022-01-31 18:46:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-31 18:46:49,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:49,467 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:49,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 18:46:49,468 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:49,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:49,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1423395830, now seen corresponding path program 17 times [2022-01-31 18:46:49,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:49,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266049891] [2022-01-31 18:46:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:49,469 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:49,470 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:49,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:49,471 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:46:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:46:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:46:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:46:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:46:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:46:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:46:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:46:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:46:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:49,829 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:49,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266049891] [2022-01-31 18:46:49,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1266049891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:49,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:49,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 18:46:49,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453914552] [2022-01-31 18:46:49,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:49,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 18:46:49,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:49,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 18:46:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:46:49,831 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:46:50,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:50,779 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2022-01-31 18:46:50,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 18:46:50,779 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 116 [2022-01-31 18:46:50,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:50,780 INFO L225 Difference]: With dead ends: 134 [2022-01-31 18:46:50,780 INFO L226 Difference]: Without dead ends: 132 [2022-01-31 18:46:50,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=2288, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 18:46:50,781 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 58 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:50,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 476 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:46:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-01-31 18:46:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2022-01-31 18:46:50,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 103 states have internal predecessors, (105), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:46:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2022-01-31 18:46:50,798 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 116 [2022-01-31 18:46:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:50,799 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2022-01-31 18:46:50,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 18:46:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2022-01-31 18:46:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-31 18:46:50,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:50,800 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:50,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 18:46:50,800 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash 564492973, now seen corresponding path program 18 times [2022-01-31 18:46:50,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:50,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878288737] [2022-01-31 18:46:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:50,801 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:50,801 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:50,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:50,802 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:50,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:46:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:50,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:46:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:50,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:46:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:46:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:46:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:46:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:46:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:46:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:46:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:46:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:51,014 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:51,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878288737] [2022-01-31 18:46:51,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [878288737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:51,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:51,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 18:46:51,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070040168] [2022-01-31 18:46:51,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:51,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 18:46:51,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:51,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 18:46:51,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2022-01-31 18:46:51,015 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:46:51,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:51,386 INFO L93 Difference]: Finished difference Result 312 states and 319 transitions. [2022-01-31 18:46:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 18:46:51,387 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 124 [2022-01-31 18:46:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:51,388 INFO L225 Difference]: With dead ends: 312 [2022-01-31 18:46:51,388 INFO L226 Difference]: Without dead ends: 138 [2022-01-31 18:46:51,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=305, Invalid=1027, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:46:51,390 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 148 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:51,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 155 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:46:51,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-31 18:46:51,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 131. [2022-01-31 18:46:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 106 states have internal predecessors, (108), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:46:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2022-01-31 18:46:51,408 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 124 [2022-01-31 18:46:51,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:51,408 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2022-01-31 18:46:51,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:46:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2022-01-31 18:46:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-31 18:46:51,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:51,409 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:51,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 18:46:51,410 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:51,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:51,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1127566548, now seen corresponding path program 19 times [2022-01-31 18:46:51,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:51,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750155309] [2022-01-31 18:46:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:51,413 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:51,413 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:51,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:51,414 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:46:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:46:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:46:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:46:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:46:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:46:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:46:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:46:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:46:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:46:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:51,821 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:51,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750155309] [2022-01-31 18:46:51,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1750155309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:51,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:51,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 18:46:51,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822017121] [2022-01-31 18:46:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:51,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 18:46:51,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 18:46:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2022-01-31 18:46:51,822 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 30 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:46:52,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:52,963 INFO L93 Difference]: Finished difference Result 145 states and 147 transitions. [2022-01-31 18:46:52,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 18:46:52,965 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 127 [2022-01-31 18:46:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:52,966 INFO L225 Difference]: With dead ends: 145 [2022-01-31 18:46:52,966 INFO L226 Difference]: Without dead ends: 143 [2022-01-31 18:46:52,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=2687, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:46:52,967 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 58 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 2359 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:52,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 580 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2359 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:46:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-01-31 18:46:52,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2022-01-31 18:46:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 111 states have (on average 1.027027027027027) internal successors, (114), 112 states have internal predecessors, (114), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:46:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2022-01-31 18:46:52,989 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 127 [2022-01-31 18:46:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:52,989 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2022-01-31 18:46:52,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 18:46:52,989 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2022-01-31 18:46:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-31 18:46:52,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:52,990 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:52,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 18:46:52,990 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:52,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:52,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1246671901, now seen corresponding path program 20 times [2022-01-31 18:46:52,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:52,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52126825] [2022-01-31 18:46:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:52,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:52,992 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:52,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:52,993 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:46:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:46:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:46:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:46:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:46:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:46:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:46:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:46:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:46:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:46:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:46:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:53,303 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:53,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52126825] [2022-01-31 18:46:53,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [52126825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:53,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:53,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 18:46:53,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141673200] [2022-01-31 18:46:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:53,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 18:46:53,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:53,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 18:46:53,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:46:53,304 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:46:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:53,742 INFO L93 Difference]: Finished difference Result 339 states and 346 transitions. [2022-01-31 18:46:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 18:46:53,743 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 135 [2022-01-31 18:46:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:53,744 INFO L225 Difference]: With dead ends: 339 [2022-01-31 18:46:53,744 INFO L226 Difference]: Without dead ends: 149 [2022-01-31 18:46:53,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=1204, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:46:53,745 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 176 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:53,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 171 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:46:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-01-31 18:46:53,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 142. [2022-01-31 18:46:53,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 115 states have internal predecessors, (117), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:46:53,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2022-01-31 18:46:53,769 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 135 [2022-01-31 18:46:53,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:53,769 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2022-01-31 18:46:53,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:46:53,769 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2022-01-31 18:46:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-31 18:46:53,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:53,770 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:53,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 18:46:53,770 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:53,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:53,771 INFO L85 PathProgramCache]: Analyzing trace with hash -826663420, now seen corresponding path program 21 times [2022-01-31 18:46:53,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:53,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818940073] [2022-01-31 18:46:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:53,772 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:53,772 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:53,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:53,773 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:46:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:46:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:46:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:46:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:46:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:46:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:46:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:46:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:46:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:46:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:46:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:54,212 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:54,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818940073] [2022-01-31 18:46:54,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1818940073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:54,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:54,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 18:46:54,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002852502] [2022-01-31 18:46:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:54,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 18:46:54,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 18:46:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=926, Unknown=0, NotChecked=0, Total=992 [2022-01-31 18:46:54,213 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand has 32 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:46:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:55,434 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2022-01-31 18:46:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 18:46:55,434 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 138 [2022-01-31 18:46:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:55,435 INFO L225 Difference]: With dead ends: 156 [2022-01-31 18:46:55,435 INFO L226 Difference]: Without dead ends: 154 [2022-01-31 18:46:55,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=3118, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:46:55,437 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 62 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:55,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 664 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:46:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-31 18:46:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2022-01-31 18:46:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 120 states have (on average 1.025) internal successors, (123), 121 states have internal predecessors, (123), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:46:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2022-01-31 18:46:55,456 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 138 [2022-01-31 18:46:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:55,456 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2022-01-31 18:46:55,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 18:46:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2022-01-31 18:46:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-31 18:46:55,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:55,457 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:55,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 18:46:55,457 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash -665559365, now seen corresponding path program 22 times [2022-01-31 18:46:55,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:55,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777437608] [2022-01-31 18:46:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:55,459 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:55,459 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:55,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:55,460 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:46:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:46:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:46:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:46:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:46:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:46:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:46:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:46:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:46:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:46:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:46:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:46:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:55,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:55,794 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:55,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777437608] [2022-01-31 18:46:55,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1777437608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:55,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:55,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 18:46:55,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884881847] [2022-01-31 18:46:55,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:55,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 18:46:55,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 18:46:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2022-01-31 18:46:55,796 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 29 states have internal predecessors, (85), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:46:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:56,283 INFO L93 Difference]: Finished difference Result 366 states and 373 transitions. [2022-01-31 18:46:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 18:46:56,289 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 29 states have internal predecessors, (85), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 146 [2022-01-31 18:46:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:56,290 INFO L225 Difference]: With dead ends: 366 [2022-01-31 18:46:56,290 INFO L226 Difference]: Without dead ends: 160 [2022-01-31 18:46:56,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=411, Invalid=1395, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:46:56,292 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 240 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:56,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 148 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:46:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-31 18:46:56,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 153. [2022-01-31 18:46:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 123 states have (on average 1.024390243902439) internal successors, (126), 124 states have internal predecessors, (126), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:46:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2022-01-31 18:46:56,339 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 146 [2022-01-31 18:46:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:56,339 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2022-01-31 18:46:56,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 29 states have internal predecessors, (85), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:46:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2022-01-31 18:46:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-31 18:46:56,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:56,340 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:56,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 18:46:56,341 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash 31104506, now seen corresponding path program 23 times [2022-01-31 18:46:56,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:56,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397165211] [2022-01-31 18:46:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:56,344 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:56,344 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:56,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:56,346 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:46:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:46:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:46:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:46:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:46:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:46:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:46:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:46:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:46:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:46:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:46:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:46:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:56,988 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397165211] [2022-01-31 18:46:56,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [397165211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:56,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:56,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 18:46:56,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300458194] [2022-01-31 18:46:56,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:56,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 18:46:56,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 18:46:56,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 18:46:56,991 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand has 33 states, 32 states have (on average 2.75) internal successors, (88), 31 states have internal predecessors, (88), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:46:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:57,846 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2022-01-31 18:46:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 18:46:57,847 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.75) internal successors, (88), 31 states have internal predecessors, (88), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 149 [2022-01-31 18:46:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:57,848 INFO L225 Difference]: With dead ends: 166 [2022-01-31 18:46:57,848 INFO L226 Difference]: Without dead ends: 164 [2022-01-31 18:46:57,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:46:57,850 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 70 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:57,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 654 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:46:57,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-31 18:46:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-01-31 18:46:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 130 states have internal predecessors, (132), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:46:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2022-01-31 18:46:57,892 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 149 [2022-01-31 18:46:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:57,892 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2022-01-31 18:46:57,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.75) internal successors, (88), 31 states have internal predecessors, (88), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 18:46:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2022-01-31 18:46:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-31 18:46:57,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:57,893 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:57,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 18:46:57,894 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1481148593, now seen corresponding path program 24 times [2022-01-31 18:46:57,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:57,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099625516] [2022-01-31 18:46:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:57,895 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:57,895 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:57,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:57,896 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:46:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:46:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:46:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:46:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:46:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:46:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:46:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:46:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:46:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:46:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:46:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:46:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:46:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:58,209 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:58,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099625516] [2022-01-31 18:46:58,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1099625516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:58,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:58,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 18:46:58,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715889542] [2022-01-31 18:46:58,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:58,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 18:46:58,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:58,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 18:46:58,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2022-01-31 18:46:58,211 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand has 32 states, 32 states have (on average 2.84375) internal successors, (91), 31 states have internal predecessors, (91), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:46:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:58,679 INFO L93 Difference]: Finished difference Result 393 states and 400 transitions. [2022-01-31 18:46:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 18:46:58,679 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.84375) internal successors, (91), 31 states have internal predecessors, (91), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 157 [2022-01-31 18:46:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:58,680 INFO L225 Difference]: With dead ends: 393 [2022-01-31 18:46:58,680 INFO L226 Difference]: Without dead ends: 171 [2022-01-31 18:46:58,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=470, Invalid=1600, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:46:58,681 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 176 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:58,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 232 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:46:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-01-31 18:46:58,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 164. [2022-01-31 18:46:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 132 states have (on average 1.0227272727272727) internal successors, (135), 133 states have internal predecessors, (135), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:46:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2022-01-31 18:46:58,705 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 157 [2022-01-31 18:46:58,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:46:58,705 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2022-01-31 18:46:58,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.84375) internal successors, (91), 31 states have internal predecessors, (91), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:46:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2022-01-31 18:46:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-31 18:46:58,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:46:58,706 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:46:58,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 18:46:58,706 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:46:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:46:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1150510062, now seen corresponding path program 25 times [2022-01-31 18:46:58,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:46:58,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586459911] [2022-01-31 18:46:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:46:58,708 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:46:58,708 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:46:58,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:46:58,709 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:46:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:46:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:46:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:46:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:46:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:46:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:46:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:46:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:46:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:46:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:46:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:46:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:46:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:46:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:46:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:46:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:46:59,246 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:46:59,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586459911] [2022-01-31 18:46:59,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [586459911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:46:59,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:46:59,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 18:46:59,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132277128] [2022-01-31 18:46:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:46:59,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 18:46:59,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:46:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 18:46:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1186, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 18:46:59,247 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand has 36 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 34 states have internal predecessors, (94), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:47:00,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:00,853 INFO L93 Difference]: Finished difference Result 178 states and 180 transitions. [2022-01-31 18:47:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 18:47:00,861 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 34 states have internal predecessors, (94), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 160 [2022-01-31 18:47:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:00,862 INFO L225 Difference]: With dead ends: 178 [2022-01-31 18:47:00,862 INFO L226 Difference]: Without dead ends: 176 [2022-01-31 18:47:00,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=4076, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:47:00,863 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 74 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 3514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:00,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 833 Invalid, 3514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3421 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:47:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-01-31 18:47:00,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2022-01-31 18:47:00,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 138 states have (on average 1.0217391304347827) internal successors, (141), 139 states have internal predecessors, (141), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:47:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2022-01-31 18:47:00,891 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 160 [2022-01-31 18:47:00,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:00,891 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2022-01-31 18:47:00,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 34 states have internal predecessors, (94), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 18:47:00,891 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2022-01-31 18:47:00,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-31 18:47:00,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:00,892 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:00,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 18:47:00,892 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:00,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1117327671, now seen corresponding path program 26 times [2022-01-31 18:47:00,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:00,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784386766] [2022-01-31 18:47:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:00,894 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:00,894 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:00,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:00,895 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:47:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:47:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:47:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:47:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:47:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:47:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:47:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:47:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:47:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:47:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:47:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:47:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:47:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:47:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:01,261 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:01,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784386766] [2022-01-31 18:47:01,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [784386766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:01,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:01,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 18:47:01,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095651926] [2022-01-31 18:47:01,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:01,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 18:47:01,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 18:47:01,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:47:01,263 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:47:01,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:01,779 INFO L93 Difference]: Finished difference Result 420 states and 427 transitions. [2022-01-31 18:47:01,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 18:47:01,779 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 168 [2022-01-31 18:47:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:01,780 INFO L225 Difference]: With dead ends: 420 [2022-01-31 18:47:01,780 INFO L226 Difference]: Without dead ends: 182 [2022-01-31 18:47:01,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=533, Invalid=1819, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:47:01,782 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 216 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:01,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 208 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:47:01,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-01-31 18:47:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 175. [2022-01-31 18:47:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 141 states have (on average 1.0212765957446808) internal successors, (144), 142 states have internal predecessors, (144), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:47:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2022-01-31 18:47:01,824 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 168 [2022-01-31 18:47:01,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:01,824 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2022-01-31 18:47:01,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:47:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2022-01-31 18:47:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-31 18:47:01,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:01,826 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:01,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 18:47:01,826 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:01,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:01,826 INFO L85 PathProgramCache]: Analyzing trace with hash -715610936, now seen corresponding path program 27 times [2022-01-31 18:47:01,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:01,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758774450] [2022-01-31 18:47:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:01,828 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:01,828 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:01,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:01,829 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:47:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:47:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:47:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:47:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:47:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:47:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:47:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:47:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:47:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:47:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:47:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:47:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:47:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:47:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:02,493 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:02,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758774450] [2022-01-31 18:47:02,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1758774450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:02,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:02,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:47:02,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535875619] [2022-01-31 18:47:02,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:02,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:47:02,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:02,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:47:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1328, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:47:02,495 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 36 states have internal predecessors, (100), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:47:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:04,238 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2022-01-31 18:47:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 18:47:04,238 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 36 states have internal predecessors, (100), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 171 [2022-01-31 18:47:04,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:04,239 INFO L225 Difference]: With dead ends: 189 [2022-01-31 18:47:04,239 INFO L226 Difference]: Without dead ends: 187 [2022-01-31 18:47:04,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=227, Invalid=4603, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 18:47:04,240 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 78 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 3738 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 3838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:04,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 916 Invalid, 3838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3738 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:47:04,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-01-31 18:47:04,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2022-01-31 18:47:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 147 states have (on average 1.0204081632653061) internal successors, (150), 148 states have internal predecessors, (150), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:47:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2022-01-31 18:47:04,268 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 171 [2022-01-31 18:47:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:04,268 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2022-01-31 18:47:04,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 36 states have internal predecessors, (100), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 18:47:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2022-01-31 18:47:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-31 18:47:04,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:04,270 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:04,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 18:47:04,270 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:04,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1217273473, now seen corresponding path program 28 times [2022-01-31 18:47:04,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:04,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054376546] [2022-01-31 18:47:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:04,272 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:04,272 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:04,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:04,273 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:47:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:47:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:47:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:47:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:47:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:47:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:47:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:47:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:47:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:47:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:47:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:47:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:47:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:47:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:47:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:04,649 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054376546] [2022-01-31 18:47:04,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1054376546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:04,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:04,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 18:47:04,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135263238] [2022-01-31 18:47:04,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:04,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 18:47:04,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 18:47:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 18:47:04,651 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand has 36 states, 36 states have (on average 2.861111111111111) internal successors, (103), 35 states have internal predecessors, (103), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:47:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:05,240 INFO L93 Difference]: Finished difference Result 447 states and 454 transitions. [2022-01-31 18:47:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 18:47:05,240 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.861111111111111) internal successors, (103), 35 states have internal predecessors, (103), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 179 [2022-01-31 18:47:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:05,241 INFO L225 Difference]: With dead ends: 447 [2022-01-31 18:47:05,241 INFO L226 Difference]: Without dead ends: 193 [2022-01-31 18:47:05,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:47:05,243 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 260 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:05,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 215 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:47:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-01-31 18:47:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 186. [2022-01-31 18:47:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 150 states have (on average 1.02) internal successors, (153), 151 states have internal predecessors, (153), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:47:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2022-01-31 18:47:05,277 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 179 [2022-01-31 18:47:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:05,278 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions. [2022-01-31 18:47:05,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.861111111111111) internal successors, (103), 35 states have internal predecessors, (103), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:47:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions. [2022-01-31 18:47:05,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-31 18:47:05,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:05,279 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:05,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 18:47:05,279 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:05,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash 851494432, now seen corresponding path program 29 times [2022-01-31 18:47:05,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:05,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934372231] [2022-01-31 18:47:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:05,280 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:05,280 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:05,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:05,281 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:47:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:47:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:47:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:47:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:47:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:47:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:47:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:47:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:47:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:47:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:47:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:47:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:47:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:47:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:47:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:05,961 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:05,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934372231] [2022-01-31 18:47:05,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1934372231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:05,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:05,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 18:47:05,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909826675] [2022-01-31 18:47:05,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:05,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 18:47:05,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:05,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 18:47:05,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1478, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:47:05,964 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand has 40 states, 39 states have (on average 2.717948717948718) internal successors, (106), 38 states have internal predecessors, (106), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:47:08,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:08,030 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2022-01-31 18:47:08,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 18:47:08,030 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.717948717948718) internal successors, (106), 38 states have internal predecessors, (106), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 182 [2022-01-31 18:47:08,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:08,031 INFO L225 Difference]: With dead ends: 200 [2022-01-31 18:47:08,031 INFO L226 Difference]: Without dead ends: 198 [2022-01-31 18:47:08,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=240, Invalid=5162, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 18:47:08,033 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 82 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 4319 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 4425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 4319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:08,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 1041 Invalid, 4425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 4319 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 18:47:08,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-31 18:47:08,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2022-01-31 18:47:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 156 states have (on average 1.0192307692307692) internal successors, (159), 157 states have internal predecessors, (159), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:47:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions. [2022-01-31 18:47:08,064 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 182 [2022-01-31 18:47:08,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:08,065 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 196 transitions. [2022-01-31 18:47:08,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.717948717948718) internal successors, (106), 38 states have internal predecessors, (106), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 18:47:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 196 transitions. [2022-01-31 18:47:08,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:47:08,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:08,067 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:08,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 18:47:08,067 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash -156292393, now seen corresponding path program 30 times [2022-01-31 18:47:08,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:08,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360094989] [2022-01-31 18:47:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:08,069 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:08,069 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:08,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:08,070 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:47:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:47:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:47:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:47:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:47:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:47:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:47:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:47:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:47:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:47:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:47:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:47:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:47:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:47:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:47:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:47:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:08,477 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:08,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360094989] [2022-01-31 18:47:08,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [360094989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:08,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:08,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:47:08,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619659476] [2022-01-31 18:47:08,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:08,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:47:08,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:47:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:47:08,479 INFO L87 Difference]: Start difference. First operand 194 states and 196 transitions. Second operand has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 37 states have internal predecessors, (109), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:47:09,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:09,037 INFO L93 Difference]: Finished difference Result 474 states and 481 transitions. [2022-01-31 18:47:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:47:09,037 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 37 states have internal predecessors, (109), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 190 [2022-01-31 18:47:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:09,038 INFO L225 Difference]: With dead ends: 474 [2022-01-31 18:47:09,039 INFO L226 Difference]: Without dead ends: 204 [2022-01-31 18:47:09,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=671, Invalid=2299, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:47:09,039 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 268 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:09,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 238 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:47:09,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-01-31 18:47:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 197. [2022-01-31 18:47:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 159 states have (on average 1.0188679245283019) internal successors, (162), 160 states have internal predecessors, (162), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:47:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2022-01-31 18:47:09,072 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 190 [2022-01-31 18:47:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:09,072 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2022-01-31 18:47:09,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 37 states have internal predecessors, (109), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:47:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2022-01-31 18:47:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-31 18:47:09,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:09,073 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:09,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 18:47:09,073 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash 211994518, now seen corresponding path program 31 times [2022-01-31 18:47:09,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:09,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32216628] [2022-01-31 18:47:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:09,075 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:09,075 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:09,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:09,076 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:47:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:47:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:47:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:47:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:47:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:47:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:47:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:47:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:47:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:47:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:47:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:47:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:47:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:47:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:47:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:47:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:09,773 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:09,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32216628] [2022-01-31 18:47:09,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [32216628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:09,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:09,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 18:47:09,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342118251] [2022-01-31 18:47:09,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:09,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 18:47:09,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:09,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 18:47:09,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1636, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 18:47:09,774 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand has 42 states, 41 states have (on average 2.731707317073171) internal successors, (112), 40 states have internal predecessors, (112), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:47:11,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:11,988 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2022-01-31 18:47:11,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 18:47:11,988 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.731707317073171) internal successors, (112), 40 states have internal predecessors, (112), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 193 [2022-01-31 18:47:11,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:11,991 INFO L225 Difference]: With dead ends: 211 [2022-01-31 18:47:11,991 INFO L226 Difference]: Without dead ends: 209 [2022-01-31 18:47:11,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=253, Invalid=5753, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 18:47:11,992 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 84 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 4862 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 4972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 4862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:11,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1170 Invalid, 4972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 4862 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:47:11,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-01-31 18:47:12,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2022-01-31 18:47:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 165 states have (on average 1.018181818181818) internal successors, (168), 166 states have internal predecessors, (168), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:47:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2022-01-31 18:47:12,026 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 193 [2022-01-31 18:47:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:12,027 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2022-01-31 18:47:12,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.731707317073171) internal successors, (112), 40 states have internal predecessors, (112), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 18:47:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2022-01-31 18:47:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-31 18:47:12,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:12,028 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:12,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 18:47:12,028 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:12,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1787516493, now seen corresponding path program 32 times [2022-01-31 18:47:12,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:12,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107986751] [2022-01-31 18:47:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:12,030 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:12,030 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:12,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:12,031 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:47:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:47:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:47:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:47:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:47:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:47:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:47:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:47:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:47:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:47:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:47:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:47:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:47:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:47:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:47:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:47:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:47:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:12,479 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:12,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107986751] [2022-01-31 18:47:12,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1107986751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:12,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:12,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 18:47:12,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374093562] [2022-01-31 18:47:12,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:12,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 18:47:12,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:12,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 18:47:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:47:12,481 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand has 40 states, 40 states have (on average 2.875) internal successors, (115), 39 states have internal predecessors, (115), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:47:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:13,103 INFO L93 Difference]: Finished difference Result 501 states and 508 transitions. [2022-01-31 18:47:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 18:47:13,104 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.875) internal successors, (115), 39 states have internal predecessors, (115), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 201 [2022-01-31 18:47:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:13,105 INFO L225 Difference]: With dead ends: 501 [2022-01-31 18:47:13,105 INFO L226 Difference]: Without dead ends: 215 [2022-01-31 18:47:13,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=746, Invalid=2560, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:47:13,106 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 248 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:13,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 250 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 18:47:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-01-31 18:47:13,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 208. [2022-01-31 18:47:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 168 states have (on average 1.0178571428571428) internal successors, (171), 169 states have internal predecessors, (171), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:47:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2022-01-31 18:47:13,140 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 201 [2022-01-31 18:47:13,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:13,141 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2022-01-31 18:47:13,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.875) internal successors, (115), 39 states have internal predecessors, (115), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:47:13,141 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2022-01-31 18:47:13,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-31 18:47:13,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:13,142 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:13,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 18:47:13,142 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:13,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:13,142 INFO L85 PathProgramCache]: Analyzing trace with hash 755538990, now seen corresponding path program 33 times [2022-01-31 18:47:13,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:13,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919839923] [2022-01-31 18:47:13,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:13,143 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:13,144 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:13,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:13,144 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:47:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:47:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:47:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:47:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:47:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:47:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:47:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:47:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:47:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:47:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:47:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:47:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:47:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:47:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:47:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:47:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:47:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:13,933 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:13,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919839923] [2022-01-31 18:47:13,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [919839923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:13,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:13,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 18:47:13,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12929274] [2022-01-31 18:47:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:13,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 18:47:13,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:13,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 18:47:13,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1802, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 18:47:13,935 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand has 44 states, 43 states have (on average 2.744186046511628) internal successors, (118), 42 states have internal predecessors, (118), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:47:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:16,237 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2022-01-31 18:47:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:47:16,238 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.744186046511628) internal successors, (118), 42 states have internal predecessors, (118), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 204 [2022-01-31 18:47:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:16,239 INFO L225 Difference]: With dead ends: 222 [2022-01-31 18:47:16,239 INFO L226 Difference]: Without dead ends: 220 [2022-01-31 18:47:16,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=266, Invalid=6376, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 18:47:16,240 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 88 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 5239 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 5355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 5239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:16,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1269 Invalid, 5355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 5239 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:47:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-01-31 18:47:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2022-01-31 18:47:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 174 states have (on average 1.0172413793103448) internal successors, (177), 175 states have internal predecessors, (177), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:47:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 218 transitions. [2022-01-31 18:47:16,277 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 218 transitions. Word has length 204 [2022-01-31 18:47:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:16,278 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 218 transitions. [2022-01-31 18:47:16,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.744186046511628) internal successors, (118), 42 states have internal predecessors, (118), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 18:47:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 218 transitions. [2022-01-31 18:47:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-31 18:47:16,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:16,279 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:16,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 18:47:16,279 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash 176100069, now seen corresponding path program 34 times [2022-01-31 18:47:16,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:16,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801967201] [2022-01-31 18:47:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:16,281 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:16,281 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:16,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:16,282 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:47:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:47:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:47:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:47:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:47:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:47:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:47:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:47:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:47:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:47:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:47:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:47:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:47:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:47:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:47:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:47:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:47:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:47:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:16,819 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:16,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801967201] [2022-01-31 18:47:16,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [801967201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:16,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:16,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 18:47:16,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467724543] [2022-01-31 18:47:16,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:16,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 18:47:16,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 18:47:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 18:47:16,820 INFO L87 Difference]: Start difference. First operand 216 states and 218 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:47:17,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:17,500 INFO L93 Difference]: Finished difference Result 528 states and 535 transitions. [2022-01-31 18:47:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 18:47:17,500 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 212 [2022-01-31 18:47:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:17,502 INFO L225 Difference]: With dead ends: 528 [2022-01-31 18:47:17,502 INFO L226 Difference]: Without dead ends: 226 [2022-01-31 18:47:17,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=825, Invalid=2835, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:47:17,503 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 232 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:17,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 331 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 18:47:17,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-01-31 18:47:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 219. [2022-01-31 18:47:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 177 states have (on average 1.0169491525423728) internal successors, (180), 178 states have internal predecessors, (180), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:47:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2022-01-31 18:47:17,548 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 212 [2022-01-31 18:47:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:17,548 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 221 transitions. [2022-01-31 18:47:17,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:47:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 221 transitions. [2022-01-31 18:47:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-31 18:47:17,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:17,549 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:17,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 18:47:17,550 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:17,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:17,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1821836900, now seen corresponding path program 35 times [2022-01-31 18:47:17,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:17,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50326972] [2022-01-31 18:47:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:17,552 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:17,552 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:17,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:17,553 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:47:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:47:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:47:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:47:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:47:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:47:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:47:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:47:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:47:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:47:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:47:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:47:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:47:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:47:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:47:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:47:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:47:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:47:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:18,397 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:18,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50326972] [2022-01-31 18:47:18,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [50326972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:18,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:18,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 18:47:18,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746686362] [2022-01-31 18:47:18,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:18,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 18:47:18,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 18:47:18,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:47:18,399 INFO L87 Difference]: Start difference. First operand 219 states and 221 transitions. Second operand has 46 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 44 states have internal predecessors, (124), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:47:20,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:20,895 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2022-01-31 18:47:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 18:47:20,895 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 44 states have internal predecessors, (124), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 215 [2022-01-31 18:47:20,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:20,896 INFO L225 Difference]: With dead ends: 233 [2022-01-31 18:47:20,897 INFO L226 Difference]: Without dead ends: 231 [2022-01-31 18:47:20,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=279, Invalid=7031, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 18:47:20,898 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 96 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 5714 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 5839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 5714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:20,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1376 Invalid, 5839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 5714 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 18:47:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-01-31 18:47:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2022-01-31 18:47:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 183 states have (on average 1.0163934426229508) internal successors, (186), 184 states have internal predecessors, (186), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:47:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2022-01-31 18:47:20,962 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 215 [2022-01-31 18:47:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:20,962 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2022-01-31 18:47:20,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 44 states have internal predecessors, (124), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 18:47:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2022-01-31 18:47:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-31 18:47:20,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:20,963 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:20,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 18:47:20,964 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2020796187, now seen corresponding path program 36 times [2022-01-31 18:47:20,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:20,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116646647] [2022-01-31 18:47:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:20,965 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:20,966 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:20,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:20,967 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:47:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:47:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:47:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:47:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:47:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:47:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:47:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:47:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:47:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:47:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:47:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:47:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:47:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:47:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:47:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:47:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:47:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:47:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:47:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:21,521 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:21,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116646647] [2022-01-31 18:47:21,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1116646647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:21,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:21,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 18:47:21,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878464635] [2022-01-31 18:47:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:21,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 18:47:21,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:21,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 18:47:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 18:47:21,523 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 43 states have internal predecessors, (127), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:47:22,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:22,320 INFO L93 Difference]: Finished difference Result 555 states and 562 transitions. [2022-01-31 18:47:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 18:47:22,325 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 43 states have internal predecessors, (127), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 223 [2022-01-31 18:47:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:22,326 INFO L225 Difference]: With dead ends: 555 [2022-01-31 18:47:22,326 INFO L226 Difference]: Without dead ends: 237 [2022-01-31 18:47:22,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=908, Invalid=3124, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:47:22,328 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 376 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:22,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 295 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:47:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-01-31 18:47:22,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 230. [2022-01-31 18:47:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 186 states have (on average 1.0161290322580645) internal successors, (189), 187 states have internal predecessors, (189), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:47:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 232 transitions. [2022-01-31 18:47:22,369 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 232 transitions. Word has length 223 [2022-01-31 18:47:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:22,369 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 232 transitions. [2022-01-31 18:47:22,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 43 states have internal predecessors, (127), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:47:22,369 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 232 transitions. [2022-01-31 18:47:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-01-31 18:47:22,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:22,370 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:22,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 18:47:22,370 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:22,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:22,370 INFO L85 PathProgramCache]: Analyzing trace with hash 588652092, now seen corresponding path program 37 times [2022-01-31 18:47:22,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:22,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589785897] [2022-01-31 18:47:22,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:22,372 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:22,372 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:22,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:22,373 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:47:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:47:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:47:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:47:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:47:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:47:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:47:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:47:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:47:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:47:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:47:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:47:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:47:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:47:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:47:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:47:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:47:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:47:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:47:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:23,288 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:23,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589785897] [2022-01-31 18:47:23,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1589785897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:23,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:23,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 18:47:23,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030284467] [2022-01-31 18:47:23,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:23,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 18:47:23,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 18:47:23,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=2158, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 18:47:23,290 INFO L87 Difference]: Start difference. First operand 230 states and 232 transitions. Second operand has 48 states, 47 states have (on average 2.765957446808511) internal successors, (130), 46 states have internal predecessors, (130), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:47:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:26,087 INFO L93 Difference]: Finished difference Result 244 states and 246 transitions. [2022-01-31 18:47:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:47:26,087 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.765957446808511) internal successors, (130), 46 states have internal predecessors, (130), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 226 [2022-01-31 18:47:26,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:26,090 INFO L225 Difference]: With dead ends: 244 [2022-01-31 18:47:26,090 INFO L226 Difference]: Without dead ends: 242 [2022-01-31 18:47:26,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=292, Invalid=7718, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 18:47:26,104 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 94 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 6426 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 6552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 6426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:26,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1529 Invalid, 6552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 6426 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:47:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-31 18:47:26,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 238. [2022-01-31 18:47:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 192 states have (on average 1.015625) internal successors, (195), 193 states have internal predecessors, (195), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:47:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 240 transitions. [2022-01-31 18:47:26,151 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 240 transitions. Word has length 226 [2022-01-31 18:47:26,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:26,151 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 240 transitions. [2022-01-31 18:47:26,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.765957446808511) internal successors, (130), 46 states have internal predecessors, (130), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 18:47:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 240 transitions. [2022-01-31 18:47:26,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-31 18:47:26,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:26,152 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:26,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 18:47:26,153 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2141759219, now seen corresponding path program 38 times [2022-01-31 18:47:26,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:26,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887435276] [2022-01-31 18:47:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:26,155 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:26,155 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:26,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:26,159 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:47:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:47:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:47:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:47:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:47:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:47:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:47:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:47:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:47:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:47:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:47:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:47:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:47:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:47:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:47:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:47:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:47:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:47:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:47:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:47:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:26,700 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:26,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887435276] [2022-01-31 18:47:26,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [887435276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:26,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:26,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 18:47:26,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866125943] [2022-01-31 18:47:26,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:26,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 18:47:26,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:26,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 18:47:26,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=1559, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:47:26,702 INFO L87 Difference]: Start difference. First operand 238 states and 240 transitions. Second operand has 46 states, 46 states have (on average 2.891304347826087) internal successors, (133), 45 states have internal predecessors, (133), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:47:27,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:27,507 INFO L93 Difference]: Finished difference Result 582 states and 589 transitions. [2022-01-31 18:47:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 18:47:27,507 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.891304347826087) internal successors, (133), 45 states have internal predecessors, (133), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 234 [2022-01-31 18:47:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:27,508 INFO L225 Difference]: With dead ends: 582 [2022-01-31 18:47:27,508 INFO L226 Difference]: Without dead ends: 248 [2022-01-31 18:47:27,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=995, Invalid=3427, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:47:27,510 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 340 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:27,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 316 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:47:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-01-31 18:47:27,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 241. [2022-01-31 18:47:27,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 195 states have (on average 1.0153846153846153) internal successors, (198), 196 states have internal predecessors, (198), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:47:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2022-01-31 18:47:27,553 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 234 [2022-01-31 18:47:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:27,554 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2022-01-31 18:47:27,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.891304347826087) internal successors, (133), 45 states have internal predecessors, (133), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:47:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2022-01-31 18:47:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-31 18:47:27,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:27,555 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:27,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 18:47:27,555 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash 160653618, now seen corresponding path program 39 times [2022-01-31 18:47:27,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:27,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893356914] [2022-01-31 18:47:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:27,557 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:27,557 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:27,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:27,558 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:47:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:47:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:47:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:47:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:47:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:47:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:47:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:47:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:47:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:47:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:47:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:47:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:47:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:47:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:47:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:47:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:47:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:47:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:47:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:47:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:28,528 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:28,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893356914] [2022-01-31 18:47:28,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [893356914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:28,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:28,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 18:47:28,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43048304] [2022-01-31 18:47:28,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:28,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 18:47:28,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:28,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 18:47:28,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=2348, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 18:47:28,550 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand has 50 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 48 states have internal predecessors, (136), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:47:31,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:31,567 INFO L93 Difference]: Finished difference Result 255 states and 257 transitions. [2022-01-31 18:47:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 18:47:31,568 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 48 states have internal predecessors, (136), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 237 [2022-01-31 18:47:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:31,569 INFO L225 Difference]: With dead ends: 255 [2022-01-31 18:47:31,569 INFO L226 Difference]: Without dead ends: 253 [2022-01-31 18:47:31,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=305, Invalid=8437, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 18:47:31,571 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 102 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 7019 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 7155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 7019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:31,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1666 Invalid, 7155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 7019 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 18:47:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-01-31 18:47:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2022-01-31 18:47:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 201 states have (on average 1.0149253731343284) internal successors, (204), 202 states have internal predecessors, (204), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:47:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2022-01-31 18:47:31,633 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 237 [2022-01-31 18:47:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:31,634 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2022-01-31 18:47:31,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 48 states have internal predecessors, (136), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 18:47:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2022-01-31 18:47:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-01-31 18:47:31,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:31,636 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:31,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 18:47:31,636 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:31,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1215917079, now seen corresponding path program 40 times [2022-01-31 18:47:31,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:31,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123995639] [2022-01-31 18:47:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:31,638 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:31,638 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:31,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:31,639 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:47:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:47:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:47:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:47:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:47:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:47:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:47:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:47:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:47:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:47:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:47:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:47:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:47:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:47:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:47:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:47:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:47:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:47:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:47:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:47:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:47:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:32,300 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:32,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123995639] [2022-01-31 18:47:32,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2123995639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:32,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:32,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 18:47:32,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598738055] [2022-01-31 18:47:32,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:32,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 18:47:32,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 18:47:32,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=1699, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 18:47:32,301 INFO L87 Difference]: Start difference. First operand 249 states and 251 transitions. Second operand has 48 states, 48 states have (on average 2.8958333333333335) internal successors, (139), 47 states have internal predecessors, (139), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:47:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:33,115 INFO L93 Difference]: Finished difference Result 609 states and 616 transitions. [2022-01-31 18:47:33,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 18:47:33,116 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.8958333333333335) internal successors, (139), 47 states have internal predecessors, (139), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 245 [2022-01-31 18:47:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:33,117 INFO L225 Difference]: With dead ends: 609 [2022-01-31 18:47:33,117 INFO L226 Difference]: Without dead ends: 259 [2022-01-31 18:47:33,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1086, Invalid=3744, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 18:47:33,119 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 296 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:33,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 359 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:47:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-01-31 18:47:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 252. [2022-01-31 18:47:33,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 204 states have (on average 1.0147058823529411) internal successors, (207), 205 states have internal predecessors, (207), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:47:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 254 transitions. [2022-01-31 18:47:33,170 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 254 transitions. Word has length 245 [2022-01-31 18:47:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:33,171 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 254 transitions. [2022-01-31 18:47:33,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.8958333333333335) internal successors, (139), 47 states have internal predecessors, (139), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:47:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 254 transitions. [2022-01-31 18:47:33,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-01-31 18:47:33,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:33,172 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:33,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 18:47:33,172 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1371845558, now seen corresponding path program 41 times [2022-01-31 18:47:33,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:33,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692453150] [2022-01-31 18:47:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:33,174 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:33,174 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:33,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:33,175 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:47:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:47:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:47:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:47:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:47:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:47:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:47:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:47:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:47:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:47:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:47:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:47:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:47:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:47:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:47:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:47:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:47:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:47:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:47:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:47:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:47:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:34,206 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:34,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692453150] [2022-01-31 18:47:34,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692453150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:34,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:34,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 18:47:34,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346156560] [2022-01-31 18:47:34,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:34,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 18:47:34,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:34,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 18:47:34,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=2546, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:47:34,207 INFO L87 Difference]: Start difference. First operand 252 states and 254 transitions. Second operand has 52 states, 51 states have (on average 2.784313725490196) internal successors, (142), 50 states have internal predecessors, (142), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:47:37,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:37,432 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2022-01-31 18:47:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 18:47:37,433 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.784313725490196) internal successors, (142), 50 states have internal predecessors, (142), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 248 [2022-01-31 18:47:37,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:37,434 INFO L225 Difference]: With dead ends: 266 [2022-01-31 18:47:37,434 INFO L226 Difference]: Without dead ends: 264 [2022-01-31 18:47:37,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=318, Invalid=9188, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 18:47:37,435 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 104 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 7474 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 7614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 7474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:37,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 1784 Invalid, 7614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 7474 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 18:47:37,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-01-31 18:47:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 260. [2022-01-31 18:47:37,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 210 states have (on average 1.0142857142857142) internal successors, (213), 211 states have internal predecessors, (213), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:47:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 262 transitions. [2022-01-31 18:47:37,503 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 262 transitions. Word has length 248 [2022-01-31 18:47:37,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:37,504 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 262 transitions. [2022-01-31 18:47:37,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.784313725490196) internal successors, (142), 50 states have internal predecessors, (142), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 18:47:37,504 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 262 transitions. [2022-01-31 18:47:37,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-31 18:47:37,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:37,505 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:37,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 18:47:37,505 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:37,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:37,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2105403137, now seen corresponding path program 42 times [2022-01-31 18:47:37,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:37,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468284809] [2022-01-31 18:47:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:37,507 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:37,507 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:37,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:37,508 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:47:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:47:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:47:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:47:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:47:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:47:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:47:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:47:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:47:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:47:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:47:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:47:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:47:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:47:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:47:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:47:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:47:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:47:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:47:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:47:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:47:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:47:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:38,187 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:38,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468284809] [2022-01-31 18:47:38,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1468284809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:38,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:38,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 18:47:38,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72633917] [2022-01-31 18:47:38,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:38,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 18:47:38,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 18:47:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 18:47:38,189 INFO L87 Difference]: Start difference. First operand 260 states and 262 transitions. Second operand has 50 states, 50 states have (on average 2.9) internal successors, (145), 49 states have internal predecessors, (145), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:47:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:38,987 INFO L93 Difference]: Finished difference Result 636 states and 643 transitions. [2022-01-31 18:47:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 18:47:38,988 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.9) internal successors, (145), 49 states have internal predecessors, (145), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 256 [2022-01-31 18:47:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:38,989 INFO L225 Difference]: With dead ends: 636 [2022-01-31 18:47:38,989 INFO L226 Difference]: Without dead ends: 270 [2022-01-31 18:47:38,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1181, Invalid=4075, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 18:47:38,993 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 352 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:38,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 328 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:47:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-01-31 18:47:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 263. [2022-01-31 18:47:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 213 states have (on average 1.0140845070422535) internal successors, (216), 214 states have internal predecessors, (216), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:47:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 265 transitions. [2022-01-31 18:47:39,057 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 265 transitions. Word has length 256 [2022-01-31 18:47:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:39,057 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 265 transitions. [2022-01-31 18:47:39,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.9) internal successors, (145), 49 states have internal predecessors, (145), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:47:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 265 transitions. [2022-01-31 18:47:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-01-31 18:47:39,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:39,058 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:39,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 18:47:39,058 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1485449216, now seen corresponding path program 43 times [2022-01-31 18:47:39,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:39,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784616326] [2022-01-31 18:47:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:39,060 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:39,060 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:39,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:39,061 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:47:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:47:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:47:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:47:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:47:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:47:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:47:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:47:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:47:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:47:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:47:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:47:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:47:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:47:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:47:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:47:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:47:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:47:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:47:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:47:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:47:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:47:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:40,188 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:40,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784616326] [2022-01-31 18:47:40,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [784616326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:40,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:40,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 18:47:40,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387067296] [2022-01-31 18:47:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:40,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 18:47:40,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:40,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 18:47:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2752, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:47:40,190 INFO L87 Difference]: Start difference. First operand 263 states and 265 transitions. Second operand has 54 states, 53 states have (on average 2.792452830188679) internal successors, (148), 52 states have internal predecessors, (148), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:47:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:43,705 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2022-01-31 18:47:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 18:47:43,705 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.792452830188679) internal successors, (148), 52 states have internal predecessors, (148), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 259 [2022-01-31 18:47:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:43,706 INFO L225 Difference]: With dead ends: 277 [2022-01-31 18:47:43,706 INFO L226 Difference]: Without dead ends: 275 [2022-01-31 18:47:43,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=331, Invalid=9971, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 18:47:43,707 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 112 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 8281 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 8430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 8281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:43,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1958 Invalid, 8430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 8281 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-31 18:47:43,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-01-31 18:47:43,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2022-01-31 18:47:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 219 states have (on average 1.0136986301369864) internal successors, (222), 220 states have internal predecessors, (222), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:47:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 273 transitions. [2022-01-31 18:47:43,784 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 273 transitions. Word has length 259 [2022-01-31 18:47:43,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:43,784 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 273 transitions. [2022-01-31 18:47:43,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.792452830188679) internal successors, (148), 52 states have internal predecessors, (148), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 18:47:43,784 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 273 transitions. [2022-01-31 18:47:43,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-01-31 18:47:43,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:43,786 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:43,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 18:47:43,786 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:43,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash 765746359, now seen corresponding path program 44 times [2022-01-31 18:47:43,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:43,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495544276] [2022-01-31 18:47:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:43,788 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:43,788 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:43,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:43,790 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:47:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:47:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:47:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:47:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:47:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:47:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:47:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:47:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:47:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:47:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:47:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:47:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:47:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:47:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:47:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:47:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:47:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:47:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:47:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:47:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:47:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:47:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:47:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:44,494 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:44,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495544276] [2022-01-31 18:47:44,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1495544276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:44,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:44,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 18:47:44,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460157378] [2022-01-31 18:47:44,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:44,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 18:47:44,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:44,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 18:47:44,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=655, Invalid=1997, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:47:44,496 INFO L87 Difference]: Start difference. First operand 271 states and 273 transitions. Second operand has 52 states, 52 states have (on average 2.9038461538461537) internal successors, (151), 51 states have internal predecessors, (151), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:47:45,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:45,398 INFO L93 Difference]: Finished difference Result 663 states and 670 transitions. [2022-01-31 18:47:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 18:47:45,399 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.9038461538461537) internal successors, (151), 51 states have internal predecessors, (151), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 267 [2022-01-31 18:47:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:45,400 INFO L225 Difference]: With dead ends: 663 [2022-01-31 18:47:45,400 INFO L226 Difference]: Without dead ends: 281 [2022-01-31 18:47:45,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1280, Invalid=4420, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 18:47:45,401 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 320 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:45,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 391 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:47:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-01-31 18:47:45,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 274. [2022-01-31 18:47:45,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 222 states have (on average 1.0135135135135136) internal successors, (225), 223 states have internal predecessors, (225), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:47:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 276 transitions. [2022-01-31 18:47:45,458 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 276 transitions. Word has length 267 [2022-01-31 18:47:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:45,458 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 276 transitions. [2022-01-31 18:47:45,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.9038461538461537) internal successors, (151), 51 states have internal predecessors, (151), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:47:45,458 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 276 transitions. [2022-01-31 18:47:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-01-31 18:47:45,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:45,459 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:45,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 18:47:45,459 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:45,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:45,459 INFO L85 PathProgramCache]: Analyzing trace with hash 675948120, now seen corresponding path program 45 times [2022-01-31 18:47:45,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:45,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980173044] [2022-01-31 18:47:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:45,461 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:45,461 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:45,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:45,462 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:47:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:47:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:47:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:47:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:47:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:47:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:47:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:47:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:47:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:47:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:47:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:47:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:47:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:47:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:47:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:47:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:47:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:47:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:47:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:47:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:47:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:47:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:47:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:46,630 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:46,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980173044] [2022-01-31 18:47:46,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1980173044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:46,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:46,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 18:47:46,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954082976] [2022-01-31 18:47:46,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:46,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 18:47:46,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 18:47:46,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=2966, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:47:46,631 INFO L87 Difference]: Start difference. First operand 274 states and 276 transitions. Second operand has 56 states, 55 states have (on average 2.8) internal successors, (154), 54 states have internal predecessors, (154), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:47:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:50,454 INFO L93 Difference]: Finished difference Result 288 states and 290 transitions. [2022-01-31 18:47:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 18:47:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.8) internal successors, (154), 54 states have internal predecessors, (154), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 270 [2022-01-31 18:47:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:50,455 INFO L225 Difference]: With dead ends: 288 [2022-01-31 18:47:50,455 INFO L226 Difference]: Without dead ends: 286 [2022-01-31 18:47:50,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=344, Invalid=10786, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 18:47:50,456 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 112 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 8845 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 8997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 8845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:50,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 2109 Invalid, 8997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 8845 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-31 18:47:50,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-31 18:47:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 282. [2022-01-31 18:47:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 228 states have (on average 1.013157894736842) internal successors, (231), 229 states have internal predecessors, (231), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:47:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 284 transitions. [2022-01-31 18:47:50,518 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 284 transitions. Word has length 270 [2022-01-31 18:47:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:50,518 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 284 transitions. [2022-01-31 18:47:50,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.8) internal successors, (154), 54 states have internal predecessors, (154), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 18:47:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 284 transitions. [2022-01-31 18:47:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-01-31 18:47:50,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:50,519 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:50,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 18:47:50,520 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:50,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1808847631, now seen corresponding path program 46 times [2022-01-31 18:47:50,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:50,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385175850] [2022-01-31 18:47:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:50,522 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:50,522 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:50,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:50,523 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:47:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:47:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:47:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:47:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:47:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:47:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:47:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:47:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:47:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:47:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:47:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:47:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:47:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:47:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:47:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:47:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:47:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:47:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:47:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:47:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:47:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:47:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:47:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:47:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:51,268 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:51,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385175850] [2022-01-31 18:47:51,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1385175850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:51,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:51,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 18:47:51,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344976111] [2022-01-31 18:47:51,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:51,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 18:47:51,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 18:47:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:47:51,270 INFO L87 Difference]: Start difference. First operand 282 states and 284 transitions. Second operand has 54 states, 54 states have (on average 2.9074074074074074) internal successors, (157), 53 states have internal predecessors, (157), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:47:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:52,190 INFO L93 Difference]: Finished difference Result 690 states and 697 transitions. [2022-01-31 18:47:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 18:47:52,190 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.9074074074074074) internal successors, (157), 53 states have internal predecessors, (157), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 278 [2022-01-31 18:47:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:52,192 INFO L225 Difference]: With dead ends: 690 [2022-01-31 18:47:52,192 INFO L226 Difference]: Without dead ends: 292 [2022-01-31 18:47:52,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1383, Invalid=4779, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 18:47:52,193 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 384 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:52,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 414 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:47:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-01-31 18:47:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 285. [2022-01-31 18:47:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 231 states have (on average 1.0129870129870129) internal successors, (234), 232 states have internal predecessors, (234), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:47:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 287 transitions. [2022-01-31 18:47:52,260 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 287 transitions. Word has length 278 [2022-01-31 18:47:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:52,260 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 287 transitions. [2022-01-31 18:47:52,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.9074074074074074) internal successors, (157), 53 states have internal predecessors, (157), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:47:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 287 transitions. [2022-01-31 18:47:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-01-31 18:47:52,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:52,262 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:52,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 18:47:52,262 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:52,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash 429681358, now seen corresponding path program 47 times [2022-01-31 18:47:52,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:52,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936669536] [2022-01-31 18:47:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:52,264 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:52,264 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:52,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:52,266 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:47:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:47:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:47:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:47:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:47:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:47:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:47:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:47:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:47:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:47:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:47:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:47:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:47:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:47:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:47:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:47:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:47:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:47:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:47:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:47:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:47:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:47:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:47:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:47:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:53,507 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:53,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936669536] [2022-01-31 18:47:53,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [936669536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:53,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:53,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:47:53,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43865759] [2022-01-31 18:47:53,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:53,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:47:53,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:53,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:47:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=3188, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:47:53,509 INFO L87 Difference]: Start difference. First operand 285 states and 287 transitions. Second operand has 58 states, 57 states have (on average 2.807017543859649) internal successors, (160), 56 states have internal predecessors, (160), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:47:57,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:57,645 INFO L93 Difference]: Finished difference Result 299 states and 301 transitions. [2022-01-31 18:47:57,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 18:47:57,645 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.807017543859649) internal successors, (160), 56 states have internal predecessors, (160), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 281 [2022-01-31 18:47:57,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:57,646 INFO L225 Difference]: With dead ends: 299 [2022-01-31 18:47:57,646 INFO L226 Difference]: Without dead ends: 297 [2022-01-31 18:47:57,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=357, Invalid=11633, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 18:47:57,648 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 114 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 9835 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 9991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 9835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:57,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 2302 Invalid, 9991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 9835 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-31 18:47:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-01-31 18:47:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 293. [2022-01-31 18:47:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 237 states have (on average 1.0126582278481013) internal successors, (240), 238 states have internal predecessors, (240), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:47:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 295 transitions. [2022-01-31 18:47:57,718 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 295 transitions. Word has length 281 [2022-01-31 18:47:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:57,719 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 295 transitions. [2022-01-31 18:47:57,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.807017543859649) internal successors, (160), 56 states have internal predecessors, (160), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 18:47:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 295 transitions. [2022-01-31 18:47:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-01-31 18:47:57,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:57,720 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:57,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 18:47:57,720 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:57,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:57,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1881817477, now seen corresponding path program 48 times [2022-01-31 18:47:57,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:57,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471721231] [2022-01-31 18:47:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:57,722 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:57,722 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:57,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:57,723 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:47:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:47:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:47:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:47:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:47:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:47:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:47:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:47:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:47:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:47:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:47:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:47:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:47:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:47:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:47:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:47:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:47:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:47:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:47:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:47:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:47:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:47:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:47:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:47:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:47:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:47:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:47:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:47:58,516 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:47:58,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471721231] [2022-01-31 18:47:58,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [471721231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:47:58,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:47:58,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 18:47:58,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653220314] [2022-01-31 18:47:58,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:47:58,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 18:47:58,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:47:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 18:47:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=761, Invalid=2319, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:47:58,519 INFO L87 Difference]: Start difference. First operand 293 states and 295 transitions. Second operand has 56 states, 56 states have (on average 2.9107142857142856) internal successors, (163), 55 states have internal predecessors, (163), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:47:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:47:59,479 INFO L93 Difference]: Finished difference Result 717 states and 724 transitions. [2022-01-31 18:47:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 18:47:59,479 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.9107142857142856) internal successors, (163), 55 states have internal predecessors, (163), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 289 [2022-01-31 18:47:59,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:47:59,480 INFO L225 Difference]: With dead ends: 717 [2022-01-31 18:47:59,480 INFO L226 Difference]: Without dead ends: 303 [2022-01-31 18:47:59,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1490, Invalid=5152, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 18:47:59,482 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 424 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:47:59,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 359 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:47:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-01-31 18:47:59,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 296. [2022-01-31 18:47:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 240 states have (on average 1.0125) internal successors, (243), 241 states have internal predecessors, (243), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:47:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 298 transitions. [2022-01-31 18:47:59,547 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 298 transitions. Word has length 289 [2022-01-31 18:47:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:47:59,548 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 298 transitions. [2022-01-31 18:47:59,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.9107142857142856) internal successors, (163), 55 states have internal predecessors, (163), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:47:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 298 transitions. [2022-01-31 18:47:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-01-31 18:47:59,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:47:59,549 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:47:59,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 18:47:59,549 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:47:59,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:47:59,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1268034662, now seen corresponding path program 49 times [2022-01-31 18:47:59,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:47:59,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049199791] [2022-01-31 18:47:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:47:59,551 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:47:59,551 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:47:59,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:47:59,552 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:47:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:48:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:48:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:48:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:48:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:48:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:48:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:48:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:48:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:48:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:48:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:48:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:48:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:48:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:48:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:48:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:48:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:48:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:48:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:48:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:48:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:48:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:48:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:48:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:48:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:48:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:00,892 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:00,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049199791] [2022-01-31 18:48:00,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2049199791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:00,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:00,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:48:00,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411438305] [2022-01-31 18:48:00,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:00,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:48:00,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:00,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:48:00,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=3418, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:48:00,893 INFO L87 Difference]: Start difference. First operand 296 states and 298 transitions. Second operand has 60 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 58 states have internal predecessors, (166), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:48:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:05,266 INFO L93 Difference]: Finished difference Result 310 states and 312 transitions. [2022-01-31 18:48:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 18:48:05,266 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 58 states have internal predecessors, (166), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 292 [2022-01-31 18:48:05,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:05,267 INFO L225 Difference]: With dead ends: 310 [2022-01-31 18:48:05,267 INFO L226 Difference]: Without dead ends: 308 [2022-01-31 18:48:05,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=370, Invalid=12512, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 18:48:05,269 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 124 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 10369 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 10536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 10369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:05,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 2441 Invalid, 10536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 10369 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-31 18:48:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-31 18:48:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2022-01-31 18:48:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 246 states have (on average 1.0121951219512195) internal successors, (249), 247 states have internal predecessors, (249), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:48:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 306 transitions. [2022-01-31 18:48:05,337 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 306 transitions. Word has length 292 [2022-01-31 18:48:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:05,337 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 306 transitions. [2022-01-31 18:48:05,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 58 states have internal predecessors, (166), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 18:48:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 306 transitions. [2022-01-31 18:48:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-01-31 18:48:05,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:05,338 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:05,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 18:48:05,338 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:05,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1829541091, now seen corresponding path program 50 times [2022-01-31 18:48:05,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:05,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879545336] [2022-01-31 18:48:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:05,340 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:05,340 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:05,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:05,342 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:48:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:48:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:48:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:48:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:48:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:48:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:48:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:48:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:48:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:48:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:48:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:48:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:48:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:48:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:48:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:48:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:48:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:48:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:48:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:48:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:48:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:48:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:48:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:48:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:48:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:48:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:06,185 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:06,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879545336] [2022-01-31 18:48:06,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [879545336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:06,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:06,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:48:06,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801742845] [2022-01-31 18:48:06,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:06,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:48:06,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:48:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=2489, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:48:06,187 INFO L87 Difference]: Start difference. First operand 304 states and 306 transitions. Second operand has 58 states, 58 states have (on average 2.913793103448276) internal successors, (169), 57 states have internal predecessors, (169), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:48:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:07,274 INFO L93 Difference]: Finished difference Result 744 states and 751 transitions. [2022-01-31 18:48:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:48:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.913793103448276) internal successors, (169), 57 states have internal predecessors, (169), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 300 [2022-01-31 18:48:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:07,276 INFO L225 Difference]: With dead ends: 744 [2022-01-31 18:48:07,276 INFO L226 Difference]: Without dead ends: 314 [2022-01-31 18:48:07,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1601, Invalid=5539, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:48:07,277 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 476 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:07,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 430 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:48:07,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-31 18:48:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 307. [2022-01-31 18:48:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 249 states have (on average 1.0120481927710843) internal successors, (252), 250 states have internal predecessors, (252), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:48:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 309 transitions. [2022-01-31 18:48:07,347 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 309 transitions. Word has length 300 [2022-01-31 18:48:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:07,347 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 309 transitions. [2022-01-31 18:48:07,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.913793103448276) internal successors, (169), 57 states have internal predecessors, (169), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:48:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 309 transitions. [2022-01-31 18:48:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-01-31 18:48:07,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:07,349 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:07,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 18:48:07,349 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1562044004, now seen corresponding path program 51 times [2022-01-31 18:48:07,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:07,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130185254] [2022-01-31 18:48:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:07,350 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:07,351 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:07,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:07,352 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:48:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:48:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:48:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:48:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:48:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:48:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:48:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:48:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:48:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:48:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:48:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:48:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:48:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:48:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:48:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:48:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:48:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:48:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:48:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:48:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:48:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:48:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:48:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:48:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:48:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:48:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:08,741 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:08,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130185254] [2022-01-31 18:48:08,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1130185254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:08,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:08,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:48:08,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327728876] [2022-01-31 18:48:08,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:08,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:48:08,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:08,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:48:08,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=3656, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:48:08,743 INFO L87 Difference]: Start difference. First operand 307 states and 309 transitions. Second operand has 62 states, 61 states have (on average 2.819672131147541) internal successors, (172), 60 states have internal predecessors, (172), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:48:13,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:13,353 INFO L93 Difference]: Finished difference Result 321 states and 323 transitions. [2022-01-31 18:48:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 18:48:13,354 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.819672131147541) internal successors, (172), 60 states have internal predecessors, (172), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 303 [2022-01-31 18:48:13,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:13,355 INFO L225 Difference]: With dead ends: 321 [2022-01-31 18:48:13,355 INFO L226 Difference]: Without dead ends: 319 [2022-01-31 18:48:13,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1744 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=383, Invalid=13423, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 18:48:13,356 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 126 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 11000 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 11171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 11000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:13,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 2610 Invalid, 11171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 11000 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-31 18:48:13,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-01-31 18:48:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2022-01-31 18:48:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 255 states have (on average 1.011764705882353) internal successors, (258), 256 states have internal predecessors, (258), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:48:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 317 transitions. [2022-01-31 18:48:13,430 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 317 transitions. Word has length 303 [2022-01-31 18:48:13,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:13,430 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 317 transitions. [2022-01-31 18:48:13,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.819672131147541) internal successors, (172), 60 states have internal predecessors, (172), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 18:48:13,431 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 317 transitions. [2022-01-31 18:48:13,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-01-31 18:48:13,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:13,432 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:13,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 18:48:13,432 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash 66470483, now seen corresponding path program 52 times [2022-01-31 18:48:13,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:13,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629919325] [2022-01-31 18:48:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:13,434 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:13,434 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:13,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:13,436 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:48:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:48:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:48:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:48:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:48:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:48:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:48:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:48:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:48:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:48:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:48:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:48:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:48:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:48:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:48:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:48:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:48:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:48:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:48:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:48:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:48:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:48:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:48:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:48:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:48:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:48:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:48:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:14,308 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:14,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629919325] [2022-01-31 18:48:14,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1629919325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:14,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:14,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:48:14,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915656442] [2022-01-31 18:48:14,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:14,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:48:14,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:48:14,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=2665, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:48:14,310 INFO L87 Difference]: Start difference. First operand 315 states and 317 transitions. Second operand has 60 states, 60 states have (on average 2.9166666666666665) internal successors, (175), 59 states have internal predecessors, (175), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:48:15,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:15,335 INFO L93 Difference]: Finished difference Result 771 states and 778 transitions. [2022-01-31 18:48:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:48:15,335 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.9166666666666665) internal successors, (175), 59 states have internal predecessors, (175), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 311 [2022-01-31 18:48:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:15,337 INFO L225 Difference]: With dead ends: 771 [2022-01-31 18:48:15,337 INFO L226 Difference]: Without dead ends: 325 [2022-01-31 18:48:15,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1716, Invalid=5940, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 18:48:15,339 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 560 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:15,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 347 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 18:48:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-01-31 18:48:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 318. [2022-01-31 18:48:15,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 258 states have (on average 1.0116279069767442) internal successors, (261), 259 states have internal predecessors, (261), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:48:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 320 transitions. [2022-01-31 18:48:15,417 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 320 transitions. Word has length 311 [2022-01-31 18:48:15,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:15,417 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 320 transitions. [2022-01-31 18:48:15,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.9166666666666665) internal successors, (175), 59 states have internal predecessors, (175), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:48:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 320 transitions. [2022-01-31 18:48:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-01-31 18:48:15,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:15,419 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:15,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 18:48:15,419 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:15,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash -756228492, now seen corresponding path program 53 times [2022-01-31 18:48:15,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:15,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760140724] [2022-01-31 18:48:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:15,421 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:15,421 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:15,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:15,422 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:48:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:48:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:48:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:48:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:48:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:48:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:48:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:48:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:48:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:48:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:48:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:48:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:48:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:48:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:48:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:48:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:48:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:48:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:48:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:48:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:48:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:48:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:48:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:48:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:48:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:48:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:48:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:17,057 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:17,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760140724] [2022-01-31 18:48:17,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1760140724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:17,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:17,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:48:17,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284867468] [2022-01-31 18:48:17,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:17,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:48:17,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:17,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:48:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=3902, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:48:17,059 INFO L87 Difference]: Start difference. First operand 318 states and 320 transitions. Second operand has 64 states, 63 states have (on average 2.8253968253968256) internal successors, (178), 62 states have internal predecessors, (178), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:48:22,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:22,001 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2022-01-31 18:48:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 18:48:22,001 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.8253968253968256) internal successors, (178), 62 states have internal predecessors, (178), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 314 [2022-01-31 18:48:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:22,003 INFO L225 Difference]: With dead ends: 332 [2022-01-31 18:48:22,003 INFO L226 Difference]: Without dead ends: 330 [2022-01-31 18:48:22,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1864 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=396, Invalid=14366, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 18:48:22,004 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 128 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 11893 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 12069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 11893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:22,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 2793 Invalid, 12069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 11893 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-31 18:48:22,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-01-31 18:48:22,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 326. [2022-01-31 18:48:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 264 states have (on average 1.0113636363636365) internal successors, (267), 265 states have internal predecessors, (267), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:48:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 328 transitions. [2022-01-31 18:48:22,096 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 328 transitions. Word has length 314 [2022-01-31 18:48:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:22,096 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 328 transitions. [2022-01-31 18:48:22,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.8253968253968256) internal successors, (178), 62 states have internal predecessors, (178), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 18:48:22,096 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 328 transitions. [2022-01-31 18:48:22,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-01-31 18:48:22,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:22,097 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:22,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 18:48:22,097 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:22,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1145589973, now seen corresponding path program 54 times [2022-01-31 18:48:22,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:22,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665099425] [2022-01-31 18:48:22,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:22,099 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:22,099 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:22,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:22,101 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:48:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:48:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:48:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:48:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:48:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:48:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:48:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:48:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:48:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:48:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:48:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:48:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:48:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:48:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:48:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:48:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:48:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:48:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:48:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:48:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:48:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:48:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:48:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:48:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:48:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:48:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:48:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:48:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:23,076 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:23,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665099425] [2022-01-31 18:48:23,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [665099425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:23,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:23,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:48:23,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643600413] [2022-01-31 18:48:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:23,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:48:23,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:23,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:48:23,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=935, Invalid=2847, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:48:23,078 INFO L87 Difference]: Start difference. First operand 326 states and 328 transitions. Second operand has 62 states, 62 states have (on average 2.9193548387096775) internal successors, (181), 61 states have internal predecessors, (181), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:48:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:24,141 INFO L93 Difference]: Finished difference Result 798 states and 805 transitions. [2022-01-31 18:48:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 18:48:24,142 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.9193548387096775) internal successors, (181), 61 states have internal predecessors, (181), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 322 [2022-01-31 18:48:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:24,143 INFO L225 Difference]: With dead ends: 798 [2022-01-31 18:48:24,143 INFO L226 Difference]: Without dead ends: 336 [2022-01-31 18:48:24,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1835, Invalid=6355, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 18:48:24,145 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 484 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:24,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 358 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:48:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-01-31 18:48:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 329. [2022-01-31 18:48:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 267 states have (on average 1.0112359550561798) internal successors, (270), 268 states have internal predecessors, (270), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:48:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 331 transitions. [2022-01-31 18:48:24,232 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 331 transitions. Word has length 322 [2022-01-31 18:48:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:24,232 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 331 transitions. [2022-01-31 18:48:24,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.9193548387096775) internal successors, (181), 61 states have internal predecessors, (181), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:48:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 331 transitions. [2022-01-31 18:48:24,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-01-31 18:48:24,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:24,233 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:24,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 18:48:24,234 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:24,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:24,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1437459562, now seen corresponding path program 55 times [2022-01-31 18:48:24,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:24,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394017535] [2022-01-31 18:48:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:24,236 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:24,236 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:24,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:24,237 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:48:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:48:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:48:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:48:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:48:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:48:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:48:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:48:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:48:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:48:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:48:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:48:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:48:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:48:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:48:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:48:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:48:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:48:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:48:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:48:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:48:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:48:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:48:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:48:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:48:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:48:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:48:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:48:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:25,826 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:25,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394017535] [2022-01-31 18:48:25,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [394017535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:25,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:25,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:48:25,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992141209] [2022-01-31 18:48:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:25,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:48:25,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:48:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=4156, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:48:25,828 INFO L87 Difference]: Start difference. First operand 329 states and 331 transitions. Second operand has 66 states, 65 states have (on average 2.830769230769231) internal successors, (184), 64 states have internal predecessors, (184), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:48:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:31,023 INFO L93 Difference]: Finished difference Result 343 states and 345 transitions. [2022-01-31 18:48:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-31 18:48:31,023 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.830769230769231) internal successors, (184), 64 states have internal predecessors, (184), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 325 [2022-01-31 18:48:31,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:31,024 INFO L225 Difference]: With dead ends: 343 [2022-01-31 18:48:31,024 INFO L226 Difference]: Without dead ends: 341 [2022-01-31 18:48:31,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=409, Invalid=15341, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 18:48:31,026 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 132 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 12503 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 12684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 12503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:31,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 2946 Invalid, 12684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 12503 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-31 18:48:31,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-01-31 18:48:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 337. [2022-01-31 18:48:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 273 states have (on average 1.010989010989011) internal successors, (276), 274 states have internal predecessors, (276), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:48:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 339 transitions. [2022-01-31 18:48:31,117 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 339 transitions. Word has length 325 [2022-01-31 18:48:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:31,117 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 339 transitions. [2022-01-31 18:48:31,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.830769230769231) internal successors, (184), 64 states have internal predecessors, (184), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 18:48:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 339 transitions. [2022-01-31 18:48:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-01-31 18:48:31,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:31,119 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:31,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 18:48:31,119 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:31,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:31,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1117364447, now seen corresponding path program 56 times [2022-01-31 18:48:31,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:31,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993493465] [2022-01-31 18:48:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:31,121 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:31,121 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:31,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:31,122 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:48:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:48:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:48:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:48:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:48:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:48:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:48:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:48:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:48:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:48:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:48:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:48:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:48:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:48:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:48:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:48:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:48:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:48:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:48:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:48:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:48:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:48:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:48:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:48:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:48:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:48:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:48:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:48:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:48:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:32,122 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:32,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993493465] [2022-01-31 18:48:32,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [993493465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:32,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:32,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:48:32,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776180485] [2022-01-31 18:48:32,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:32,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:48:32,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:32,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:48:32,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=3035, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:48:32,125 INFO L87 Difference]: Start difference. First operand 337 states and 339 transitions. Second operand has 64 states, 64 states have (on average 2.921875) internal successors, (187), 63 states have internal predecessors, (187), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:48:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:33,228 INFO L93 Difference]: Finished difference Result 825 states and 832 transitions. [2022-01-31 18:48:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 18:48:33,229 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.921875) internal successors, (187), 63 states have internal predecessors, (187), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 333 [2022-01-31 18:48:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:33,230 INFO L225 Difference]: With dead ends: 825 [2022-01-31 18:48:33,230 INFO L226 Difference]: Without dead ends: 347 [2022-01-31 18:48:33,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1958, Invalid=6784, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 18:48:33,232 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 436 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:33,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 488 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:48:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-31 18:48:33,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 340. [2022-01-31 18:48:33,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 276 states have (on average 1.0108695652173914) internal successors, (279), 277 states have internal predecessors, (279), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:48:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 342 transitions. [2022-01-31 18:48:33,324 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 342 transitions. Word has length 333 [2022-01-31 18:48:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:33,324 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 342 transitions. [2022-01-31 18:48:33,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.921875) internal successors, (187), 63 states have internal predecessors, (187), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:48:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 342 transitions. [2022-01-31 18:48:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-01-31 18:48:33,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:33,326 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:33,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 18:48:33,326 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:33,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:33,326 INFO L85 PathProgramCache]: Analyzing trace with hash 430226562, now seen corresponding path program 57 times [2022-01-31 18:48:33,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:33,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595712805] [2022-01-31 18:48:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:33,328 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:33,328 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:33,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:33,329 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:48:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:48:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:48:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:48:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:48:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:48:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:48:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:48:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:48:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:48:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:48:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:48:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:48:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:48:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:48:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:48:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:48:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:48:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:48:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:48:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:48:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:48:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:48:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:48:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:48:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:48:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:48:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:48:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:48:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:34,973 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:34,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595712805] [2022-01-31 18:48:34,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [595712805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:34,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:34,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 18:48:34,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474593497] [2022-01-31 18:48:34,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:34,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 18:48:34,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:34,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 18:48:34,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=4418, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 18:48:34,974 INFO L87 Difference]: Start difference. First operand 340 states and 342 transitions. Second operand has 68 states, 67 states have (on average 2.8358208955223883) internal successors, (190), 66 states have internal predecessors, (190), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:48:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:40,528 INFO L93 Difference]: Finished difference Result 354 states and 356 transitions. [2022-01-31 18:48:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 18:48:40,529 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.8358208955223883) internal successors, (190), 66 states have internal predecessors, (190), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 336 [2022-01-31 18:48:40,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:40,530 INFO L225 Difference]: With dead ends: 354 [2022-01-31 18:48:40,530 INFO L226 Difference]: Without dead ends: 352 [2022-01-31 18:48:40,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2116 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=422, Invalid=16348, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 18:48:40,532 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 136 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 13387 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 13575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 13387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:40,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 3165 Invalid, 13575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 13387 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-31 18:48:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-01-31 18:48:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 348. [2022-01-31 18:48:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 282 states have (on average 1.0106382978723405) internal successors, (285), 283 states have internal predecessors, (285), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:48:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 350 transitions. [2022-01-31 18:48:40,631 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 350 transitions. Word has length 336 [2022-01-31 18:48:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:40,631 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 350 transitions. [2022-01-31 18:48:40,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.8358208955223883) internal successors, (190), 66 states have internal predecessors, (190), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 18:48:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 350 transitions. [2022-01-31 18:48:40,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-01-31 18:48:40,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:40,633 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:40,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 18:48:40,633 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:40,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:40,633 INFO L85 PathProgramCache]: Analyzing trace with hash -814768327, now seen corresponding path program 58 times [2022-01-31 18:48:40,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:40,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310949744] [2022-01-31 18:48:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:40,635 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:40,635 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:40,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:40,636 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:48:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:48:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:48:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:48:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:48:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:48:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:48:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:48:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:48:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:48:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:48:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:48:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:48:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:48:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:48:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:48:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:48:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:48:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:48:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:48:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:48:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:48:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:48:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:48:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:48:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:48:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:48:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:48:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:48:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:48:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:41,661 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310949744] [2022-01-31 18:48:41,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1310949744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:41,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:41,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:48:41,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975455928] [2022-01-31 18:48:41,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:41,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:48:41,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:41,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:48:41,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1061, Invalid=3229, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:48:41,663 INFO L87 Difference]: Start difference. First operand 348 states and 350 transitions. Second operand has 66 states, 66 states have (on average 2.9242424242424243) internal successors, (193), 65 states have internal predecessors, (193), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:48:42,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:42,878 INFO L93 Difference]: Finished difference Result 852 states and 859 transitions. [2022-01-31 18:48:42,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:48:42,878 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.9242424242424243) internal successors, (193), 65 states have internal predecessors, (193), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 344 [2022-01-31 18:48:42,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:42,879 INFO L225 Difference]: With dead ends: 852 [2022-01-31 18:48:42,879 INFO L226 Difference]: Without dead ends: 358 [2022-01-31 18:48:42,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2085, Invalid=7227, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 18:48:42,881 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 548 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:42,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 411 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:48:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-01-31 18:48:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 351. [2022-01-31 18:48:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 285 states have (on average 1.0105263157894737) internal successors, (288), 286 states have internal predecessors, (288), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:48:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 353 transitions. [2022-01-31 18:48:42,971 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 353 transitions. Word has length 344 [2022-01-31 18:48:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:42,971 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 353 transitions. [2022-01-31 18:48:42,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.9242424242424243) internal successors, (193), 65 states have internal predecessors, (193), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:48:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 353 transitions. [2022-01-31 18:48:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-01-31 18:48:42,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:42,973 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:42,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 18:48:42,973 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:42,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1943325496, now seen corresponding path program 59 times [2022-01-31 18:48:42,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:42,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94955111] [2022-01-31 18:48:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:42,975 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:42,975 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:42,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:42,976 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:48:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:48:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:48:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:48:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:48:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:48:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:48:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:48:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:48:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:48:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:48:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:48:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:48:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:48:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:48:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:48:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:48:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:48:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:48:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:48:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:48:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:48:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:48:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:48:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:48:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:48:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:48:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:48:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:48:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:48:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:44,758 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:44,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94955111] [2022-01-31 18:48:44,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [94955111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:44,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:44,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 18:48:44,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036519666] [2022-01-31 18:48:44,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:44,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 18:48:44,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 18:48:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=4688, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 18:48:44,760 INFO L87 Difference]: Start difference. First operand 351 states and 353 transitions. Second operand has 70 states, 69 states have (on average 2.8405797101449277) internal successors, (196), 68 states have internal predecessors, (196), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:48:50,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:50,592 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2022-01-31 18:48:50,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-31 18:48:50,593 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.8405797101449277) internal successors, (196), 68 states have internal predecessors, (196), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 347 [2022-01-31 18:48:50,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:50,594 INFO L225 Difference]: With dead ends: 365 [2022-01-31 18:48:50,594 INFO L226 Difference]: Without dead ends: 363 [2022-01-31 18:48:50,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2248 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=435, Invalid=17387, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 18:48:50,595 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 142 mSDsluCounter, 3253 mSDsCounter, 0 mSdLazyCounter, 14236 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 3362 SdHoareTripleChecker+Invalid, 14432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 14236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:50,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 3362 Invalid, 14432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 14236 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-31 18:48:50,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-31 18:48:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2022-01-31 18:48:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 291 states have (on average 1.0103092783505154) internal successors, (294), 292 states have internal predecessors, (294), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:48:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 361 transitions. [2022-01-31 18:48:50,693 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 361 transitions. Word has length 347 [2022-01-31 18:48:50,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:50,693 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 361 transitions. [2022-01-31 18:48:50,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.8405797101449277) internal successors, (196), 68 states have internal predecessors, (196), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 18:48:50,694 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 361 transitions. [2022-01-31 18:48:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-01-31 18:48:50,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:50,695 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:50,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 18:48:50,695 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:50,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:50,695 INFO L85 PathProgramCache]: Analyzing trace with hash 542676975, now seen corresponding path program 60 times [2022-01-31 18:48:50,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:50,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073515920] [2022-01-31 18:48:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:50,697 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:50,697 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:50,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:50,699 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:48:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:48:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:48:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:48:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:48:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:48:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:48:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:48:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:48:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:48:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:48:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:48:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:48:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:48:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:48:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:48:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:48:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:48:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:48:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:48:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:48:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:48:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:48:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:48:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:48:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:48:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:48:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:48:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:48:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:48:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:48:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:51,792 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:51,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073515920] [2022-01-31 18:48:51,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2073515920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:51,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:51,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 18:48:51,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897869246] [2022-01-31 18:48:51,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:51,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 18:48:51,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 18:48:51,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=3429, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 18:48:51,794 INFO L87 Difference]: Start difference. First operand 359 states and 361 transitions. Second operand has 68 states, 68 states have (on average 2.926470588235294) internal successors, (199), 67 states have internal predecessors, (199), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:48:53,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:48:53,005 INFO L93 Difference]: Finished difference Result 879 states and 886 transitions. [2022-01-31 18:48:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:48:53,006 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.926470588235294) internal successors, (199), 67 states have internal predecessors, (199), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 355 [2022-01-31 18:48:53,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:48:53,008 INFO L225 Difference]: With dead ends: 879 [2022-01-31 18:48:53,008 INFO L226 Difference]: Without dead ends: 369 [2022-01-31 18:48:53,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2216, Invalid=7684, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 18:48:53,010 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 548 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:48:53,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 401 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 18:48:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-31 18:48:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 362. [2022-01-31 18:48:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 294 states have (on average 1.010204081632653) internal successors, (297), 295 states have internal predecessors, (297), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:48:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 364 transitions. [2022-01-31 18:48:53,115 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 364 transitions. Word has length 355 [2022-01-31 18:48:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:48:53,116 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 364 transitions. [2022-01-31 18:48:53,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.926470588235294) internal successors, (199), 67 states have internal predecessors, (199), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:48:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 364 transitions. [2022-01-31 18:48:53,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-01-31 18:48:53,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:48:53,117 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:48:53,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 18:48:53,117 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:48:53,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:48:53,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1148303728, now seen corresponding path program 61 times [2022-01-31 18:48:53,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:48:53,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94387347] [2022-01-31 18:48:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:48:53,119 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:48:53,120 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:48:53,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:48:53,121 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:48:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:48:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:48:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:48:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:48:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:48:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:48:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:48:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:48:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:48:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:48:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:48:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:48:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:48:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:48:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:48:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:48:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:48:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:48:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:48:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:48:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:48:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:48:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:48:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:48:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:48:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:48:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:48:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:48:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:48:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:48:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:48:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:48:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:48:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:48:54,976 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:48:54,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94387347] [2022-01-31 18:48:54,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [94387347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:48:54,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:48:54,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 18:48:54,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538847332] [2022-01-31 18:48:54,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:48:54,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 18:48:54,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:48:54,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 18:48:54,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=4966, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 18:48:54,978 INFO L87 Difference]: Start difference. First operand 362 states and 364 transitions. Second operand has 72 states, 71 states have (on average 2.8450704225352115) internal successors, (202), 70 states have internal predecessors, (202), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:49:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:49:01,312 INFO L93 Difference]: Finished difference Result 376 states and 378 transitions. [2022-01-31 18:49:01,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 18:49:01,313 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.8450704225352115) internal successors, (202), 70 states have internal predecessors, (202), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 358 [2022-01-31 18:49:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:49:01,314 INFO L225 Difference]: With dead ends: 376 [2022-01-31 18:49:01,314 INFO L226 Difference]: Without dead ends: 374 [2022-01-31 18:49:01,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2384 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=448, Invalid=18458, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 18:49:01,316 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 142 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 15484 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 15682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 15484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:49:01,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 3604 Invalid, 15682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 15484 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-31 18:49:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-31 18:49:01,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 370. [2022-01-31 18:49:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 300 states have (on average 1.01) internal successors, (303), 301 states have internal predecessors, (303), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:49:01,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 372 transitions. [2022-01-31 18:49:01,416 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 372 transitions. Word has length 358 [2022-01-31 18:49:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:49:01,417 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 372 transitions. [2022-01-31 18:49:01,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.8450704225352115) internal successors, (202), 70 states have internal predecessors, (202), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 18:49:01,417 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 372 transitions. [2022-01-31 18:49:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-01-31 18:49:01,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:49:01,418 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:49:01,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 18:49:01,419 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:49:01,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:49:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2012035911, now seen corresponding path program 62 times [2022-01-31 18:49:01,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:49:01,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359608335] [2022-01-31 18:49:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:49:01,420 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:49:01,420 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:49:01,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:49:01,427 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:49:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:49:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:49:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:49:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:49:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:49:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:49:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:49:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:49:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:49:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:49:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:49:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:49:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:49:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:49:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:49:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:49:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:49:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:49:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:49:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:49:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:49:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:49:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:49:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:49:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:49:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:49:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:49:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:49:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:49:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:49:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:49:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:49:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:49:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:49:02,572 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:49:02,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359608335] [2022-01-31 18:49:02,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1359608335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:49:02,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:49:02,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 18:49:02,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535159935] [2022-01-31 18:49:02,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:49:02,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 18:49:02,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:49:02,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 18:49:02,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1195, Invalid=3635, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 18:49:02,574 INFO L87 Difference]: Start difference. First operand 370 states and 372 transitions. Second operand has 70 states, 70 states have (on average 2.9285714285714284) internal successors, (205), 69 states have internal predecessors, (205), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:49:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:49:03,899 INFO L93 Difference]: Finished difference Result 906 states and 913 transitions. [2022-01-31 18:49:03,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 18:49:03,899 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.9285714285714284) internal successors, (205), 69 states have internal predecessors, (205), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 366 [2022-01-31 18:49:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:49:03,901 INFO L225 Difference]: With dead ends: 906 [2022-01-31 18:49:03,901 INFO L226 Difference]: Without dead ends: 380 [2022-01-31 18:49:03,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2351, Invalid=8155, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 18:49:03,903 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 576 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:49:03,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 420 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:49:03,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-01-31 18:49:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 373. [2022-01-31 18:49:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 303 states have (on average 1.00990099009901) internal successors, (306), 304 states have internal predecessors, (306), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:49:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 375 transitions. [2022-01-31 18:49:04,006 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 375 transitions. Word has length 366 [2022-01-31 18:49:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:49:04,006 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 375 transitions. [2022-01-31 18:49:04,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.9285714285714284) internal successors, (205), 69 states have internal predecessors, (205), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:49:04,006 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 375 transitions. [2022-01-31 18:49:04,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-01-31 18:49:04,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:49:04,008 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:49:04,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 18:49:04,008 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:49:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:49:04,009 INFO L85 PathProgramCache]: Analyzing trace with hash -826814970, now seen corresponding path program 63 times [2022-01-31 18:49:04,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:49:04,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793992442] [2022-01-31 18:49:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:49:04,010 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:49:04,010 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:49:04,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:49:04,012 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:49:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:49:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:49:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:49:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:49:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:49:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:49:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:49:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:49:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:49:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:49:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:49:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:49:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:49:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:49:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:49:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:49:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:49:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:49:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:49:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:49:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:49:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:49:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:49:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:49:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:49:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:49:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:49:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:49:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:49:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:49:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:49:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:49:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:49:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:49:05,936 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:49:05,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793992442] [2022-01-31 18:49:05,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [793992442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:49:05,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:49:05,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 18:49:05,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384012600] [2022-01-31 18:49:05,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:49:05,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 18:49:05,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:49:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 18:49:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=5252, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 18:49:05,939 INFO L87 Difference]: Start difference. First operand 373 states and 375 transitions. Second operand has 74 states, 73 states have (on average 2.8493150684931505) internal successors, (208), 72 states have internal predecessors, (208), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:49:12,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:49:12,597 INFO L93 Difference]: Finished difference Result 387 states and 389 transitions. [2022-01-31 18:49:12,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-31 18:49:12,598 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.8493150684931505) internal successors, (208), 72 states have internal predecessors, (208), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 369 [2022-01-31 18:49:12,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:49:12,599 INFO L225 Difference]: With dead ends: 387 [2022-01-31 18:49:12,599 INFO L226 Difference]: Without dead ends: 385 [2022-01-31 18:49:12,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=461, Invalid=19561, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 18:49:12,601 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 152 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 15906 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 16115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 15906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:49:12,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 3742 Invalid, 16115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 15906 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-01-31 18:49:12,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-01-31 18:49:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 381. [2022-01-31 18:49:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 309 states have (on average 1.0097087378640777) internal successors, (312), 310 states have internal predecessors, (312), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:49:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 383 transitions. [2022-01-31 18:49:12,727 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 383 transitions. Word has length 369 [2022-01-31 18:49:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:49:12,728 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 383 transitions. [2022-01-31 18:49:12,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.8493150684931505) internal successors, (208), 72 states have internal predecessors, (208), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 18:49:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 383 transitions. [2022-01-31 18:49:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-01-31 18:49:12,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:49:12,730 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:49:12,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 18:49:12,730 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:49:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:49:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1070928707, now seen corresponding path program 64 times [2022-01-31 18:49:12,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:49:12,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101282955] [2022-01-31 18:49:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:49:12,732 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:49:12,732 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:49:12,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:49:12,734 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:49:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:49:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:49:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:49:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:49:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:49:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:49:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:49:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:49:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:49:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:49:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:49:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:49:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:49:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:49:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:49:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:49:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:49:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:49:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:49:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:49:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:49:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:49:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:49:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:49:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:49:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:49:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:49:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:49:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:49:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:49:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:49:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:49:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:49:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:49:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:49:13,968 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:49:13,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101282955] [2022-01-31 18:49:13,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [101282955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:49:13,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:49:13,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 18:49:13,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848673948] [2022-01-31 18:49:13,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:49:13,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 18:49:13,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:49:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 18:49:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1265, Invalid=3847, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 18:49:13,970 INFO L87 Difference]: Start difference. First operand 381 states and 383 transitions. Second operand has 72 states, 72 states have (on average 2.9305555555555554) internal successors, (211), 71 states have internal predecessors, (211), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:49:15,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:49:15,456 INFO L93 Difference]: Finished difference Result 933 states and 940 transitions. [2022-01-31 18:49:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 18:49:15,457 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.9305555555555554) internal successors, (211), 71 states have internal predecessors, (211), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 377 [2022-01-31 18:49:15,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:49:15,458 INFO L225 Difference]: With dead ends: 933 [2022-01-31 18:49:15,458 INFO L226 Difference]: Without dead ends: 391 [2022-01-31 18:49:15,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2410 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2490, Invalid=8640, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 18:49:15,460 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 592 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:49:15,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 497 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:49:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-01-31 18:49:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 384. [2022-01-31 18:49:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 312 states have (on average 1.0096153846153846) internal successors, (315), 313 states have internal predecessors, (315), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:49:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 386 transitions. [2022-01-31 18:49:15,576 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 386 transitions. Word has length 377 [2022-01-31 18:49:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:49:15,576 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 386 transitions. [2022-01-31 18:49:15,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.9305555555555554) internal successors, (211), 71 states have internal predecessors, (211), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:49:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 386 transitions. [2022-01-31 18:49:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-01-31 18:49:15,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:49:15,578 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:49:15,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 18:49:15,578 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:49:15,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:49:15,578 INFO L85 PathProgramCache]: Analyzing trace with hash 888896670, now seen corresponding path program 65 times [2022-01-31 18:49:15,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:49:15,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992412284] [2022-01-31 18:49:15,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:49:15,580 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:49:15,580 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:49:15,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:49:15,582 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:49:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:49:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:49:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:49:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:49:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:49:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:49:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:49:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:49:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:49:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:49:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:49:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:49:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:49:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:49:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:49:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:49:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:49:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:49:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:49:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:49:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:49:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:49:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:49:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:49:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:49:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:49:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:49:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:49:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:49:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:49:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:49:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:49:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:49:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:49:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:17,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:49:17,610 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:49:17,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992412284] [2022-01-31 18:49:17,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [992412284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:49:17,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:49:17,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 18:49:17,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673701424] [2022-01-31 18:49:17,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:49:17,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 18:49:17,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:49:17,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 18:49:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=5546, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 18:49:17,611 INFO L87 Difference]: Start difference. First operand 384 states and 386 transitions. Second operand has 76 states, 75 states have (on average 2.8533333333333335) internal successors, (214), 74 states have internal predecessors, (214), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:49:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:49:24,815 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2022-01-31 18:49:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 18:49:24,816 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.8533333333333335) internal successors, (214), 74 states have internal predecessors, (214), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 380 [2022-01-31 18:49:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:49:24,817 INFO L225 Difference]: With dead ends: 398 [2022-01-31 18:49:24,817 INFO L226 Difference]: Without dead ends: 396 [2022-01-31 18:49:24,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2668 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=474, Invalid=20696, Unknown=0, NotChecked=0, Total=21170 [2022-01-31 18:49:24,819 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 150 mSDsluCounter, 3875 mSDsCounter, 0 mSdLazyCounter, 17080 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 3993 SdHoareTripleChecker+Invalid, 17290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 17080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:49:24,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 3993 Invalid, 17290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 17080 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-31 18:49:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-01-31 18:49:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 392. [2022-01-31 18:49:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 318 states have (on average 1.009433962264151) internal successors, (321), 319 states have internal predecessors, (321), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:49:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 394 transitions. [2022-01-31 18:49:24,941 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 394 transitions. Word has length 380 [2022-01-31 18:49:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:49:24,942 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 394 transitions. [2022-01-31 18:49:24,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.8533333333333335) internal successors, (214), 74 states have internal predecessors, (214), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 18:49:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 394 transitions. [2022-01-31 18:49:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-01-31 18:49:24,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:49:24,943 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:49:24,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 18:49:24,944 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:49:24,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:49:24,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1081965739, now seen corresponding path program 66 times [2022-01-31 18:49:24,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:49:24,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500889159] [2022-01-31 18:49:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:49:24,946 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:49:24,946 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:49:24,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:49:24,948 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:49:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:49:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:49:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:49:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:49:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:49:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:49:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:49:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:49:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:49:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:49:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:49:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:49:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:49:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:49:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:49:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:49:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:49:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:49:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:49:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:49:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:49:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:49:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:49:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:49:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:49:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:49:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:49:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:49:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:49:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:49:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:49:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:49:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:49:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:49:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:49:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:49:26,298 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:49:26,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500889159] [2022-01-31 18:49:26,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [500889159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:49:26,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:49:26,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 18:49:26,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855794536] [2022-01-31 18:49:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:49:26,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 18:49:26,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:49:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 18:49:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1337, Invalid=4065, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 18:49:26,300 INFO L87 Difference]: Start difference. First operand 392 states and 394 transitions. Second operand has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 73 states have internal predecessors, (217), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:49:27,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:49:27,725 INFO L93 Difference]: Finished difference Result 960 states and 967 transitions. [2022-01-31 18:49:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 18:49:27,725 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 73 states have internal predecessors, (217), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 388 [2022-01-31 18:49:27,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:49:27,727 INFO L225 Difference]: With dead ends: 960 [2022-01-31 18:49:27,727 INFO L226 Difference]: Without dead ends: 402 [2022-01-31 18:49:27,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2551 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2633, Invalid=9139, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:49:27,728 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 592 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:49:27,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 504 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 18:49:27,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-01-31 18:49:27,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 395. [2022-01-31 18:49:27,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 321 states have (on average 1.0093457943925233) internal successors, (324), 322 states have internal predecessors, (324), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:49:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 397 transitions. [2022-01-31 18:49:27,843 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 397 transitions. Word has length 388 [2022-01-31 18:49:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:49:27,843 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 397 transitions. [2022-01-31 18:49:27,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 73 states have internal predecessors, (217), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:49:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 397 transitions. [2022-01-31 18:49:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-01-31 18:49:27,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:49:27,849 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:49:27,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 18:49:27,849 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:49:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:49:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash 657779924, now seen corresponding path program 67 times [2022-01-31 18:49:27,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:49:27,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730246038] [2022-01-31 18:49:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:49:27,851 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:49:27,852 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:49:27,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:49:27,853 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:49:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:49:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:49:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:49:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:49:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:49:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:49:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:49:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:49:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:49:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:49:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:49:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:49:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:49:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:49:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:49:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:49:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:49:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:49:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:29,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:49:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:49:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:49:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:49:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:49:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:49:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:49:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:49:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:49:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:49:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:49:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:49:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:49:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:49:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:49:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:49:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:49:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:49:30,022 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:49:30,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730246038] [2022-01-31 18:49:30,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1730246038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:49:30,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:49:30,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 18:49:30,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220005904] [2022-01-31 18:49:30,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:49:30,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 18:49:30,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:49:30,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 18:49:30,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=5848, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 18:49:30,024 INFO L87 Difference]: Start difference. First operand 395 states and 397 transitions. Second operand has 78 states, 77 states have (on average 2.857142857142857) internal successors, (220), 76 states have internal predecessors, (220), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:49:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:49:37,557 INFO L93 Difference]: Finished difference Result 409 states and 411 transitions. [2022-01-31 18:49:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-31 18:49:37,557 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.857142857142857) internal successors, (220), 76 states have internal predecessors, (220), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 391 [2022-01-31 18:49:37,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:49:37,567 INFO L225 Difference]: With dead ends: 409 [2022-01-31 18:49:37,567 INFO L226 Difference]: Without dead ends: 407 [2022-01-31 18:49:37,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2816 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=487, Invalid=21863, Unknown=0, NotChecked=0, Total=22350 [2022-01-31 18:49:37,569 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 158 mSDsluCounter, 4089 mSDsCounter, 0 mSdLazyCounter, 17889 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 4210 SdHoareTripleChecker+Invalid, 18108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 17889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:49:37,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 4210 Invalid, 18108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 17889 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-01-31 18:49:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-31 18:49:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 403. [2022-01-31 18:49:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 327 states have (on average 1.0091743119266054) internal successors, (330), 328 states have internal predecessors, (330), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:49:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 405 transitions. [2022-01-31 18:49:37,705 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 405 transitions. Word has length 391 [2022-01-31 18:49:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:49:37,705 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 405 transitions. [2022-01-31 18:49:37,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.857142857142857) internal successors, (220), 76 states have internal predecessors, (220), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 18:49:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 405 transitions. [2022-01-31 18:49:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-01-31 18:49:37,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:49:37,707 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:49:37,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 18:49:37,707 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:49:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:49:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1615110773, now seen corresponding path program 68 times [2022-01-31 18:49:37,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:49:37,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513345974] [2022-01-31 18:49:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:49:37,709 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:49:37,709 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:49:37,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:49:37,711 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:49:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:49:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:49:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:49:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:49:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:49:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:49:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:49:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:49:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:49:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:49:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:49:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:38,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:49:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:49:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:49:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:49:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:49:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:49:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:49:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:49:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:49:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:49:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:49:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:49:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:49:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:49:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:49:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:49:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:49:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:49:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:49:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:49:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:49:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:49:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:49:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:49:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:49:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:49:39,048 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:49:39,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513345974] [2022-01-31 18:49:39,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1513345974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:49:39,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:49:39,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 18:49:39,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951389573] [2022-01-31 18:49:39,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:49:39,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 18:49:39,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:49:39,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 18:49:39,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1411, Invalid=4289, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 18:49:39,050 INFO L87 Difference]: Start difference. First operand 403 states and 405 transitions. Second operand has 76 states, 76 states have (on average 2.9342105263157894) internal successors, (223), 75 states have internal predecessors, (223), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:49:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:49:40,627 INFO L93 Difference]: Finished difference Result 987 states and 994 transitions. [2022-01-31 18:49:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 18:49:40,627 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.9342105263157894) internal successors, (223), 75 states have internal predecessors, (223), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 399 [2022-01-31 18:49:40,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:49:40,629 INFO L225 Difference]: With dead ends: 987 [2022-01-31 18:49:40,629 INFO L226 Difference]: Without dead ends: 413 [2022-01-31 18:49:40,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2696 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2780, Invalid=9652, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 18:49:40,631 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 668 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:49:40,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 533 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:49:40,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-31 18:49:40,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 406. [2022-01-31 18:49:40,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 330 states have (on average 1.009090909090909) internal successors, (333), 331 states have internal predecessors, (333), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:49:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 408 transitions. [2022-01-31 18:49:40,759 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 408 transitions. Word has length 399 [2022-01-31 18:49:40,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:49:40,759 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 408 transitions. [2022-01-31 18:49:40,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.9342105263157894) internal successors, (223), 75 states have internal predecessors, (223), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:49:40,760 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 408 transitions. [2022-01-31 18:49:40,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-01-31 18:49:40,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:49:40,761 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:49:40,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 18:49:40,761 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:49:40,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:49:40,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2101453140, now seen corresponding path program 69 times [2022-01-31 18:49:40,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:49:40,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33820801] [2022-01-31 18:49:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:49:40,763 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:49:40,763 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:49:40,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:49:40,765 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:49:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:49:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:49:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:49:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:49:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:49:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:49:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:49:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:49:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:49:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:49:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:49:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:49:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:49:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:49:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:49:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:49:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:49:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:49:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:49:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:49:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:49:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:49:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:49:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:49:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:49:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:49:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:49:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:49:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:49:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:49:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:49:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:49:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:49:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:49:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:49:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 18:49:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:49:43,006 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:49:43,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33820801] [2022-01-31 18:49:43,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [33820801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:49:43,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:49:43,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 18:49:43,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604182337] [2022-01-31 18:49:43,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:49:43,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 18:49:43,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:49:43,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 18:49:43,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=6158, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 18:49:43,015 INFO L87 Difference]: Start difference. First operand 406 states and 408 transitions. Second operand has 80 states, 79 states have (on average 2.8607594936708862) internal successors, (226), 78 states have internal predecessors, (226), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:49:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:49:50,907 INFO L93 Difference]: Finished difference Result 420 states and 422 transitions. [2022-01-31 18:49:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 18:49:50,908 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.8607594936708862) internal successors, (226), 78 states have internal predecessors, (226), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 402 [2022-01-31 18:49:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:49:50,909 INFO L225 Difference]: With dead ends: 420 [2022-01-31 18:49:50,909 INFO L226 Difference]: Without dead ends: 418 [2022-01-31 18:49:50,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2968 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=500, Invalid=23062, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 18:49:50,911 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 160 mSDsluCounter, 4348 mSDsCounter, 0 mSdLazyCounter, 18978 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 4472 SdHoareTripleChecker+Invalid, 19202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 18978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:49:50,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 4472 Invalid, 19202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 18978 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-31 18:49:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-01-31 18:49:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 414. [2022-01-31 18:49:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 336 states have (on average 1.0089285714285714) internal successors, (339), 337 states have internal predecessors, (339), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:49:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 416 transitions. [2022-01-31 18:49:51,037 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 416 transitions. Word has length 402 [2022-01-31 18:49:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:49:51,038 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 416 transitions. [2022-01-31 18:49:51,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.8607594936708862) internal successors, (226), 78 states have internal predecessors, (226), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 18:49:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 416 transitions. [2022-01-31 18:49:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-01-31 18:49:51,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:49:51,039 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:49:51,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 18:49:51,040 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:49:51,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:49:51,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1325303965, now seen corresponding path program 70 times [2022-01-31 18:49:51,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:49:51,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858606423] [2022-01-31 18:49:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:49:51,043 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:49:51,043 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:49:51,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:49:51,045 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:49:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:49:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:49:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:49:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:49:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:49:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:49:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:49:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:49:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:49:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:49:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:49:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:49:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:49:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:49:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:49:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:49:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:49:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:49:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:49:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:49:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:49:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:49:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:49:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:49:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:49:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:49:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:49:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:49:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:49:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:49:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:49:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:49:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:49:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:49:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:49:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 18:49:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 18:49:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:49:52,469 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:49:52,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858606423] [2022-01-31 18:49:52,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1858606423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:49:52,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:49:52,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 18:49:52,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723100377] [2022-01-31 18:49:52,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:49:52,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 18:49:52,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:49:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 18:49:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=4519, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 18:49:52,472 INFO L87 Difference]: Start difference. First operand 414 states and 416 transitions. Second operand has 78 states, 78 states have (on average 2.9358974358974357) internal successors, (229), 77 states have internal predecessors, (229), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:49:54,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:49:54,056 INFO L93 Difference]: Finished difference Result 1014 states and 1021 transitions. [2022-01-31 18:49:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 18:49:54,056 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.9358974358974357) internal successors, (229), 77 states have internal predecessors, (229), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 410 [2022-01-31 18:49:54,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:49:54,058 INFO L225 Difference]: With dead ends: 1014 [2022-01-31 18:49:54,058 INFO L226 Difference]: Without dead ends: 424 [2022-01-31 18:49:54,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2845 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2931, Invalid=10179, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 18:49:54,060 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 636 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:49:54,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 460 Invalid, 2465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1793 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:49:54,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-01-31 18:49:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 417. [2022-01-31 18:49:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 339 states have (on average 1.008849557522124) internal successors, (342), 340 states have internal predecessors, (342), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:49:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 419 transitions. [2022-01-31 18:49:54,197 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 419 transitions. Word has length 410 [2022-01-31 18:49:54,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:49:54,197 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 419 transitions. [2022-01-31 18:49:54,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.9358974358974357) internal successors, (229), 77 states have internal predecessors, (229), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:49:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 419 transitions. [2022-01-31 18:49:54,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-01-31 18:49:54,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:49:54,199 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:49:54,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 18:49:54,199 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:49:54,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:49:54,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1918228574, now seen corresponding path program 71 times [2022-01-31 18:49:54,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:49:54,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142798489] [2022-01-31 18:49:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:49:54,201 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:49:54,201 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:49:54,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:49:54,203 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:49:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:49:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:49:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:49:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:49:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:49:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:49:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:49:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:49:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:49:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:49:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:49:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:49:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:49:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:49:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:49:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:49:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:49:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:49:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:49:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:49:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:49:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:49:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:49:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:49:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:49:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:49:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:49:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:49:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:49:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:49:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:49:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:49:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 18:49:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 18:49:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 18:49:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 18:49:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 18:49:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:49:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:49:56,516 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:49:56,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142798489] [2022-01-31 18:49:56,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [142798489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:49:56,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:49:56,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 18:49:56,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407915979] [2022-01-31 18:49:56,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:49:56,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 18:49:56,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:49:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 18:49:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=6476, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 18:49:56,518 INFO L87 Difference]: Start difference. First operand 417 states and 419 transitions. Second operand has 82 states, 81 states have (on average 2.8641975308641974) internal successors, (232), 80 states have internal predecessors, (232), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:50:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:50:04,752 INFO L93 Difference]: Finished difference Result 431 states and 433 transitions. [2022-01-31 18:50:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-31 18:50:04,753 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.8641975308641974) internal successors, (232), 80 states have internal predecessors, (232), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 413 [2022-01-31 18:50:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:50:04,754 INFO L225 Difference]: With dead ends: 431 [2022-01-31 18:50:04,754 INFO L226 Difference]: Without dead ends: 429 [2022-01-31 18:50:04,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3124 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=513, Invalid=24293, Unknown=0, NotChecked=0, Total=24806 [2022-01-31 18:50:04,756 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 168 mSDsluCounter, 4507 mSDsCounter, 0 mSdLazyCounter, 19754 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 4634 SdHoareTripleChecker+Invalid, 19987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 19754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:50:04,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 4634 Invalid, 19987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 19754 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-01-31 18:50:04,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-01-31 18:50:04,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 425. [2022-01-31 18:50:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 345 states have (on average 1.008695652173913) internal successors, (348), 346 states have internal predecessors, (348), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:50:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 427 transitions. [2022-01-31 18:50:04,892 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 427 transitions. Word has length 413 [2022-01-31 18:50:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:50:04,892 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 427 transitions. [2022-01-31 18:50:04,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.8641975308641974) internal successors, (232), 80 states have internal predecessors, (232), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 18:50:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 427 transitions. [2022-01-31 18:50:04,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-01-31 18:50:04,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:50:04,894 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:50:04,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 18:50:04,894 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:50:04,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:50:04,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1855460775, now seen corresponding path program 72 times [2022-01-31 18:50:04,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:50:04,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635271007] [2022-01-31 18:50:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:50:04,896 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:50:04,896 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:50:04,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:50:04,898 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:50:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:50:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:50:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:50:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:50:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:50:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:50:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:50:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:50:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:50:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:50:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:50:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:50:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:50:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:50:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:50:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:50:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:50:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:50:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:50:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:50:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:50:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:50:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:50:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:50:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:50:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:50:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:50:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:50:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:50:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:50:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:50:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:50:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 18:50:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 18:50:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 18:50:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 18:50:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 18:50:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 18:50:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:50:06,403 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:50:06,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635271007] [2022-01-31 18:50:06,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1635271007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:50:06,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:50:06,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 18:50:06,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732816539] [2022-01-31 18:50:06,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:50:06,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 18:50:06,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:50:06,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 18:50:06,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1565, Invalid=4755, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 18:50:06,406 INFO L87 Difference]: Start difference. First operand 425 states and 427 transitions. Second operand has 80 states, 80 states have (on average 2.9375) internal successors, (235), 79 states have internal predecessors, (235), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:50:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:50:08,058 INFO L93 Difference]: Finished difference Result 1041 states and 1048 transitions. [2022-01-31 18:50:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 18:50:08,058 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.9375) internal successors, (235), 79 states have internal predecessors, (235), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 421 [2022-01-31 18:50:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:50:08,060 INFO L225 Difference]: With dead ends: 1041 [2022-01-31 18:50:08,060 INFO L226 Difference]: Without dead ends: 435 [2022-01-31 18:50:08,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2998 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3086, Invalid=10720, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 18:50:08,062 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 596 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:50:08,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 545 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:50:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-01-31 18:50:08,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 428. [2022-01-31 18:50:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 348 states have (on average 1.0086206896551724) internal successors, (351), 349 states have internal predecessors, (351), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:50:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 430 transitions. [2022-01-31 18:50:08,207 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 430 transitions. Word has length 421 [2022-01-31 18:50:08,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:50:08,207 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 430 transitions. [2022-01-31 18:50:08,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.9375) internal successors, (235), 79 states have internal predecessors, (235), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:50:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 430 transitions. [2022-01-31 18:50:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-01-31 18:50:08,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:50:08,209 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:50:08,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 18:50:08,209 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:50:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:50:08,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1037505350, now seen corresponding path program 73 times [2022-01-31 18:50:08,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:50:08,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216168315] [2022-01-31 18:50:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:50:08,211 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:50:08,211 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:50:08,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:50:08,213 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:50:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:50:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:50:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:50:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:50:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:50:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:50:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:50:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:50:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:50:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:50:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:50:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:50:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:50:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:50:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:50:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:50:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:50:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:50:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:50:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:50:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:50:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:50:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:50:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:50:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:50:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:50:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:50:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:50:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:50:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:50:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:50:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:50:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:50:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:50:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:50:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:50:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 18:50:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 18:50:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:50:10,657 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:50:10,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216168315] [2022-01-31 18:50:10,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1216168315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:50:10,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:50:10,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 18:50:10,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098169904] [2022-01-31 18:50:10,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:50:10,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 18:50:10,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:50:10,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 18:50:10,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=6802, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 18:50:10,659 INFO L87 Difference]: Start difference. First operand 428 states and 430 transitions. Second operand has 84 states, 83 states have (on average 2.8674698795180724) internal successors, (238), 82 states have internal predecessors, (238), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:50:19,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:50:19,295 INFO L93 Difference]: Finished difference Result 442 states and 444 transitions. [2022-01-31 18:50:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 18:50:19,295 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.8674698795180724) internal successors, (238), 82 states have internal predecessors, (238), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 424 [2022-01-31 18:50:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:50:19,297 INFO L225 Difference]: With dead ends: 442 [2022-01-31 18:50:19,297 INFO L226 Difference]: Without dead ends: 440 [2022-01-31 18:50:19,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3284 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=526, Invalid=25556, Unknown=0, NotChecked=0, Total=26082 [2022-01-31 18:50:19,299 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 166 mSDsluCounter, 4783 mSDsCounter, 0 mSdLazyCounter, 21063 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 4913 SdHoareTripleChecker+Invalid, 21297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 21063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:50:19,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 4913 Invalid, 21297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 21063 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-01-31 18:50:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-01-31 18:50:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 436. [2022-01-31 18:50:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 354 states have (on average 1.0084745762711864) internal successors, (357), 355 states have internal predecessors, (357), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:50:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 438 transitions. [2022-01-31 18:50:19,456 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 438 transitions. Word has length 424 [2022-01-31 18:50:19,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:50:19,456 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 438 transitions. [2022-01-31 18:50:19,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.8674698795180724) internal successors, (238), 82 states have internal predecessors, (238), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 18:50:19,456 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 438 transitions. [2022-01-31 18:50:19,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-01-31 18:50:19,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:50:19,458 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:50:19,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 18:50:19,458 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:50:19,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:50:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash -138668175, now seen corresponding path program 74 times [2022-01-31 18:50:19,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:50:19,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114318031] [2022-01-31 18:50:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:50:19,460 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:50:19,460 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:50:19,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:50:19,462 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:50:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:50:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:50:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:50:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:50:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:50:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:50:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:50:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:50:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:50:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:50:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:50:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:50:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:50:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:50:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:50:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:50:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:50:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:50:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:50:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:50:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:50:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:50:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:50:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:50:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:50:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:50:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:50:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:50:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:50:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:50:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:50:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:50:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:50:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:50:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:50:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:50:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 18:50:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 18:50:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 18:50:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:50:21,027 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:50:21,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114318031] [2022-01-31 18:50:21,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [114318031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:50:21,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:50:21,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 18:50:21,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799411088] [2022-01-31 18:50:21,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:50:21,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 18:50:21,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:50:21,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 18:50:21,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1645, Invalid=4997, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 18:50:21,029 INFO L87 Difference]: Start difference. First operand 436 states and 438 transitions. Second operand has 82 states, 82 states have (on average 2.9390243902439024) internal successors, (241), 81 states have internal predecessors, (241), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:50:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:50:22,752 INFO L93 Difference]: Finished difference Result 1068 states and 1075 transitions. [2022-01-31 18:50:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 18:50:22,753 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.9390243902439024) internal successors, (241), 81 states have internal predecessors, (241), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 432 [2022-01-31 18:50:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:50:22,754 INFO L225 Difference]: With dead ends: 1068 [2022-01-31 18:50:22,754 INFO L226 Difference]: Without dead ends: 446 [2022-01-31 18:50:22,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3245, Invalid=11275, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:50:22,756 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 632 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:50:22,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 692 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:50:22,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-31 18:50:22,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 439. [2022-01-31 18:50:22,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 357 states have (on average 1.0084033613445378) internal successors, (360), 358 states have internal predecessors, (360), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:50:22,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 441 transitions. [2022-01-31 18:50:22,908 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 441 transitions. Word has length 432 [2022-01-31 18:50:22,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:50:22,908 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 441 transitions. [2022-01-31 18:50:22,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.9390243902439024) internal successors, (241), 81 states have internal predecessors, (241), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:50:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 441 transitions. [2022-01-31 18:50:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-01-31 18:50:22,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:50:22,910 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:50:22,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 18:50:22,910 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:50:22,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:50:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1040875920, now seen corresponding path program 75 times [2022-01-31 18:50:22,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:50:22,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458800276] [2022-01-31 18:50:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:50:22,912 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:50:22,912 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:50:22,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:50:22,914 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:50:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:50:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:50:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:50:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:50:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:50:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:50:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:50:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:50:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:50:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:50:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:50:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:50:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:50:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:50:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:50:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:50:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:50:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:50:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:50:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:50:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:50:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:50:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:50:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:50:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:50:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:50:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:50:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:50:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:50:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:50:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:50:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:50:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:50:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 18:50:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 18:50:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 18:50:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 18:50:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 18:50:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 18:50:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:50:25,430 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:50:25,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458800276] [2022-01-31 18:50:25,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1458800276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:50:25,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:50:25,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 18:50:25,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585040182] [2022-01-31 18:50:25,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:50:25,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 18:50:25,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:50:25,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 18:50:25,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=7136, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 18:50:25,432 INFO L87 Difference]: Start difference. First operand 439 states and 441 transitions. Second operand has 86 states, 85 states have (on average 2.8705882352941177) internal successors, (244), 84 states have internal predecessors, (244), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:50:34,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:50:34,526 INFO L93 Difference]: Finished difference Result 453 states and 455 transitions. [2022-01-31 18:50:34,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-31 18:50:34,526 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.8705882352941177) internal successors, (244), 84 states have internal predecessors, (244), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 435 [2022-01-31 18:50:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:50:34,528 INFO L225 Difference]: With dead ends: 453 [2022-01-31 18:50:34,528 INFO L226 Difference]: Without dead ends: 451 [2022-01-31 18:50:34,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3448 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=539, Invalid=26851, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 18:50:34,529 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 170 mSDsluCounter, 5025 mSDsCounter, 0 mSdLazyCounter, 22120 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 5158 SdHoareTripleChecker+Invalid, 22360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 22120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:50:34,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 5158 Invalid, 22360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 22120 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-01-31 18:50:34,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-01-31 18:50:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 447. [2022-01-31 18:50:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 363 states have (on average 1.0082644628099173) internal successors, (366), 364 states have internal predecessors, (366), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:50:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 449 transitions. [2022-01-31 18:50:34,683 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 449 transitions. Word has length 435 [2022-01-31 18:50:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:50:34,683 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 449 transitions. [2022-01-31 18:50:34,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 2.8705882352941177) internal successors, (244), 84 states have internal predecessors, (244), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 18:50:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 449 transitions. [2022-01-31 18:50:34,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-01-31 18:50:34,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:50:34,685 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:50:34,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 18:50:34,686 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:50:34,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:50:34,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1760652505, now seen corresponding path program 76 times [2022-01-31 18:50:34,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:50:34,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33644818] [2022-01-31 18:50:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:50:34,687 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:50:34,687 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:50:34,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:50:34,689 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:50:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:50:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:50:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:50:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:50:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:50:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:50:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:50:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:50:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:50:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:50:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:50:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:50:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:50:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:50:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:50:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:50:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:50:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:50:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:50:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:50:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:50:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:50:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:50:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:50:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:50:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:50:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:50:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:50:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:50:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:50:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:50:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:50:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:50:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 18:50:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 18:50:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 18:50:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 18:50:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 18:50:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 18:50:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 18:50:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:50:36,345 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:50:36,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33644818] [2022-01-31 18:50:36,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [33644818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:50:36,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:50:36,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 18:50:36,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513516465] [2022-01-31 18:50:36,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:50:36,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 18:50:36,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:50:36,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 18:50:36,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1727, Invalid=5245, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 18:50:36,348 INFO L87 Difference]: Start difference. First operand 447 states and 449 transitions. Second operand has 84 states, 84 states have (on average 2.9404761904761907) internal successors, (247), 83 states have internal predecessors, (247), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:50:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:50:37,998 INFO L93 Difference]: Finished difference Result 1095 states and 1102 transitions. [2022-01-31 18:50:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 18:50:37,998 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.9404761904761907) internal successors, (247), 83 states have internal predecessors, (247), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 443 [2022-01-31 18:50:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:50:38,000 INFO L225 Difference]: With dead ends: 1095 [2022-01-31 18:50:38,000 INFO L226 Difference]: Without dead ends: 457 [2022-01-31 18:50:38,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3408, Invalid=11844, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 18:50:38,002 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 696 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:50:38,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [736 Valid, 573 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:50:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-01-31 18:50:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 450. [2022-01-31 18:50:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 366 states have (on average 1.0081967213114753) internal successors, (369), 367 states have internal predecessors, (369), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:50:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 452 transitions. [2022-01-31 18:50:38,166 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 452 transitions. Word has length 443 [2022-01-31 18:50:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:50:38,166 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 452 transitions. [2022-01-31 18:50:38,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.9404761904761907) internal successors, (247), 83 states have internal predecessors, (247), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:50:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 452 transitions. [2022-01-31 18:50:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-01-31 18:50:38,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:50:38,168 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:50:38,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 18:50:38,168 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:50:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:50:38,169 INFO L85 PathProgramCache]: Analyzing trace with hash -787667256, now seen corresponding path program 77 times [2022-01-31 18:50:38,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:50:38,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994587155] [2022-01-31 18:50:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:50:38,170 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:50:38,170 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:50:38,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:50:38,172 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:50:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:50:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:50:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:50:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:50:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:50:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:50:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:50:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:50:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:50:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:50:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:50:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:50:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:50:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:50:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:50:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:50:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:50:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:50:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:50:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:50:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:50:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:50:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:50:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:50:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:50:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:50:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:50:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:50:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:50:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:50:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:50:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:50:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 18:50:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 18:50:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 18:50:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 18:50:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 18:50:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 18:50:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 18:50:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 18:50:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:50:40,789 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:50:40,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994587155] [2022-01-31 18:50:40,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [994587155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:50:40,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:50:40,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 18:50:40,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678643594] [2022-01-31 18:50:40,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:50:40,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 18:50:40,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:50:40,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 18:50:40,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=7478, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 18:50:40,791 INFO L87 Difference]: Start difference. First operand 450 states and 452 transitions. Second operand has 88 states, 87 states have (on average 2.8735632183908044) internal successors, (250), 86 states have internal predecessors, (250), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:50:50,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:50:50,172 INFO L93 Difference]: Finished difference Result 464 states and 466 transitions. [2022-01-31 18:50:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 18:50:50,172 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.8735632183908044) internal successors, (250), 86 states have internal predecessors, (250), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 446 [2022-01-31 18:50:50,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:50:50,174 INFO L225 Difference]: With dead ends: 464 [2022-01-31 18:50:50,174 INFO L226 Difference]: Without dead ends: 462 [2022-01-31 18:50:50,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3616 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=552, Invalid=28178, Unknown=0, NotChecked=0, Total=28730 [2022-01-31 18:50:50,175 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 176 mSDsluCounter, 5273 mSDsCounter, 0 mSdLazyCounter, 23209 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 5409 SdHoareTripleChecker+Invalid, 23457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 23209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:50:50,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 5409 Invalid, 23457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 23209 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-01-31 18:50:50,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-31 18:50:50,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 458. [2022-01-31 18:50:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 372 states have (on average 1.0080645161290323) internal successors, (375), 373 states have internal predecessors, (375), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:50:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 460 transitions. [2022-01-31 18:50:50,338 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 460 transitions. Word has length 446 [2022-01-31 18:50:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:50:50,338 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 460 transitions. [2022-01-31 18:50:50,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.8735632183908044) internal successors, (250), 86 states have internal predecessors, (250), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 18:50:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 460 transitions. [2022-01-31 18:50:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-01-31 18:50:50,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:50:50,340 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:50:50,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 18:50:50,341 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:50:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:50:50,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2139382655, now seen corresponding path program 78 times [2022-01-31 18:50:50,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:50:50,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079504987] [2022-01-31 18:50:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:50:50,342 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:50:50,342 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:50:50,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:50:50,344 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:50:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:50:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:50:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:50:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:50:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:50:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:50:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:50:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:50:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:50:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:50:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:50:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:51,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:50:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:50:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:50:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:50:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:50:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:50:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:50:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:50:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:50:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:50:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:50:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:50:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:50:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:50:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:50:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:50:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:50:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:50:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:50:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:50:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:50:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 18:50:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 18:50:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 18:50:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 18:50:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 18:50:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 18:50:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 18:50:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 18:50:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 18:50:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:50:52,037 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:50:52,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079504987] [2022-01-31 18:50:52,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2079504987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:50:52,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:50:52,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 18:50:52,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167160920] [2022-01-31 18:50:52,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:50:52,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 18:50:52,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:50:52,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 18:50:52,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1811, Invalid=5499, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 18:50:52,039 INFO L87 Difference]: Start difference. First operand 458 states and 460 transitions. Second operand has 86 states, 86 states have (on average 2.941860465116279) internal successors, (253), 85 states have internal predecessors, (253), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:50:53,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:50:53,878 INFO L93 Difference]: Finished difference Result 1122 states and 1129 transitions. [2022-01-31 18:50:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 18:50:53,878 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.941860465116279) internal successors, (253), 85 states have internal predecessors, (253), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 454 [2022-01-31 18:50:53,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:50:53,880 INFO L225 Difference]: With dead ends: 1122 [2022-01-31 18:50:53,880 INFO L226 Difference]: Without dead ends: 468 [2022-01-31 18:50:53,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3575, Invalid=12427, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 18:50:53,881 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 600 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:50:53,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 694 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 18:50:53,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-01-31 18:50:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 461. [2022-01-31 18:50:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 375 states have (on average 1.008) internal successors, (378), 376 states have internal predecessors, (378), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:50:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 463 transitions. [2022-01-31 18:50:54,037 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 463 transitions. Word has length 454 [2022-01-31 18:50:54,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:50:54,037 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 463 transitions. [2022-01-31 18:50:54,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.941860465116279) internal successors, (253), 85 states have internal predecessors, (253), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:50:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 463 transitions. [2022-01-31 18:50:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-01-31 18:50:54,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:50:54,039 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:50:54,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 18:50:54,039 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:50:54,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:50:54,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1821052610, now seen corresponding path program 79 times [2022-01-31 18:50:54,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:50:54,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910925004] [2022-01-31 18:50:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:50:54,041 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:50:54,041 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:50:54,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:50:54,043 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:50:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:50:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:50:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:50:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:50:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:50:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:50:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:50:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:50:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:50:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:50:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:50:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:50:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:50:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:50:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:50:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:50:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:50:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:50:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:50:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:50:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:50:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:50:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:50:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:50:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:50:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:50:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:50:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:50:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:50:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:50:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:50:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:50:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:50:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:50:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 18:50:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 18:50:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 18:50:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 18:50:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 18:50:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 18:50:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 18:50:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:50:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:50:56,805 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:50:56,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910925004] [2022-01-31 18:50:56,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1910925004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:50:56,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:50:56,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-01-31 18:50:56,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238028752] [2022-01-31 18:50:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:50:56,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-31 18:50:56,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:50:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-31 18:50:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=7828, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 18:50:56,807 INFO L87 Difference]: Start difference. First operand 461 states and 463 transitions. Second operand has 90 states, 89 states have (on average 2.8764044943820224) internal successors, (256), 88 states have internal predecessors, (256), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:51:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:51:06,605 INFO L93 Difference]: Finished difference Result 475 states and 477 transitions. [2022-01-31 18:51:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-31 18:51:06,605 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 2.8764044943820224) internal successors, (256), 88 states have internal predecessors, (256), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 457 [2022-01-31 18:51:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:51:06,607 INFO L225 Difference]: With dead ends: 475 [2022-01-31 18:51:06,607 INFO L226 Difference]: Without dead ends: 473 [2022-01-31 18:51:06,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3788 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=565, Invalid=29537, Unknown=0, NotChecked=0, Total=30102 [2022-01-31 18:51:06,608 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 182 mSDsluCounter, 5483 mSDsCounter, 0 mSdLazyCounter, 24021 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 5622 SdHoareTripleChecker+Invalid, 24276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 24021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:51:06,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 5622 Invalid, 24276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 24021 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-01-31 18:51:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-01-31 18:51:06,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 469. [2022-01-31 18:51:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 381 states have (on average 1.0078740157480315) internal successors, (384), 382 states have internal predecessors, (384), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:51:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 471 transitions. [2022-01-31 18:51:06,782 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 471 transitions. Word has length 457 [2022-01-31 18:51:06,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:51:06,782 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 471 transitions. [2022-01-31 18:51:06,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 2.8764044943820224) internal successors, (256), 88 states have internal predecessors, (256), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 18:51:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 471 transitions. [2022-01-31 18:51:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-01-31 18:51:06,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:51:06,784 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:51:06,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 18:51:06,785 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:51:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:51:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1108170741, now seen corresponding path program 80 times [2022-01-31 18:51:06,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:51:06,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378256689] [2022-01-31 18:51:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:51:06,786 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:51:06,786 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:51:06,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:51:06,789 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:51:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:51:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:51:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:51:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:51:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:51:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:51:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:51:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:51:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:51:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:51:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:51:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:51:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:51:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:51:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:51:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:51:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:51:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:51:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:51:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:51:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:51:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:51:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:51:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:51:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:51:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:51:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:51:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:51:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:51:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:51:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:51:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:51:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:51:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:51:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 18:51:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 18:51:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 18:51:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 18:51:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 18:51:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 18:51:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 18:51:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 18:51:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:51:08,625 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:51:08,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378256689] [2022-01-31 18:51:08,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1378256689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:51:08,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:51:08,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 18:51:08,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939997284] [2022-01-31 18:51:08,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:51:08,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 18:51:08,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:51:08,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 18:51:08,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1897, Invalid=5759, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 18:51:08,628 INFO L87 Difference]: Start difference. First operand 469 states and 471 transitions. Second operand has 88 states, 88 states have (on average 2.9431818181818183) internal successors, (259), 87 states have internal predecessors, (259), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:51:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:51:10,603 INFO L93 Difference]: Finished difference Result 1149 states and 1156 transitions. [2022-01-31 18:51:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 18:51:10,603 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.9431818181818183) internal successors, (259), 87 states have internal predecessors, (259), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 465 [2022-01-31 18:51:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:51:10,605 INFO L225 Difference]: With dead ends: 1149 [2022-01-31 18:51:10,605 INFO L226 Difference]: Without dead ends: 479 [2022-01-31 18:51:10,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3650 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3746, Invalid=13024, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 18:51:10,607 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 656 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:51:10,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 739 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [694 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:51:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-01-31 18:51:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 472. [2022-01-31 18:51:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 384 states have (on average 1.0078125) internal successors, (387), 385 states have internal predecessors, (387), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:51:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 474 transitions. [2022-01-31 18:51:10,779 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 474 transitions. Word has length 465 [2022-01-31 18:51:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:51:10,779 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 474 transitions. [2022-01-31 18:51:10,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.9431818181818183) internal successors, (259), 87 states have internal predecessors, (259), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:51:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 474 transitions. [2022-01-31 18:51:10,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-01-31 18:51:10,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:51:10,781 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:51:10,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 18:51:10,782 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:51:10,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:51:10,782 INFO L85 PathProgramCache]: Analyzing trace with hash -306377514, now seen corresponding path program 81 times [2022-01-31 18:51:10,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:51:10,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651074182] [2022-01-31 18:51:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:51:10,783 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:51:10,783 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:51:10,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:51:10,786 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:51:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:51:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:51:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:51:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:51:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:51:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:51:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:51:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:51:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:51:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:51:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:51:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:51:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:51:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:51:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:51:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:51:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:51:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:51:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:51:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:51:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:51:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:51:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:51:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:51:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:51:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:51:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:51:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:51:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:51:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:51:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:51:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:51:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 18:51:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 18:51:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 18:51:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 18:51:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 18:51:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 18:51:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 18:51:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 18:51:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 18:51:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 18:51:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:51:13,680 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:51:13,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651074182] [2022-01-31 18:51:13,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [651074182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:51:13,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:51:13,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-01-31 18:51:13,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880813988] [2022-01-31 18:51:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:51:13,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-31 18:51:13,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:51:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-31 18:51:13,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=8186, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 18:51:13,682 INFO L87 Difference]: Start difference. First operand 472 states and 474 transitions. Second operand has 92 states, 91 states have (on average 2.879120879120879) internal successors, (262), 90 states have internal predecessors, (262), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:51:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:51:24,253 INFO L93 Difference]: Finished difference Result 486 states and 488 transitions. [2022-01-31 18:51:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-31 18:51:24,254 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.879120879120879) internal successors, (262), 90 states have internal predecessors, (262), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 468 [2022-01-31 18:51:24,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:51:24,255 INFO L225 Difference]: With dead ends: 486 [2022-01-31 18:51:24,255 INFO L226 Difference]: Without dead ends: 484 [2022-01-31 18:51:24,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3964 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=578, Invalid=30928, Unknown=0, NotChecked=0, Total=31506 [2022-01-31 18:51:24,257 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 182 mSDsluCounter, 5832 mSDsCounter, 0 mSdLazyCounter, 25764 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 5974 SdHoareTripleChecker+Invalid, 26022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 25764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:51:24,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 5974 Invalid, 26022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 25764 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-01-31 18:51:24,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-01-31 18:51:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 480. [2022-01-31 18:51:24,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 390 states have (on average 1.0076923076923077) internal successors, (393), 391 states have internal predecessors, (393), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:51:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 482 transitions. [2022-01-31 18:51:24,437 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 482 transitions. Word has length 468 [2022-01-31 18:51:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:51:24,438 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 482 transitions. [2022-01-31 18:51:24,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 2.879120879120879) internal successors, (262), 90 states have internal predecessors, (262), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 18:51:24,438 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 482 transitions. [2022-01-31 18:51:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-01-31 18:51:24,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:51:24,440 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:51:24,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 18:51:24,440 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:51:24,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:51:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash 346839949, now seen corresponding path program 82 times [2022-01-31 18:51:24,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:51:24,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926561710] [2022-01-31 18:51:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:51:24,442 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:51:24,442 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:51:24,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:51:24,444 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:51:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:51:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:51:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 18:51:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 18:51:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:51:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:51:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:51:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:51:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:51:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:51:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:51:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:51:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:51:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:51:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:51:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:51:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:51:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:51:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:51:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:51:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:51:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:51:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:51:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:51:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:51:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:51:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:51:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:51:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:51:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:51:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:51:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:51:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 18:51:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 18:51:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 18:51:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 18:51:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 18:51:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 18:51:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 18:51:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 18:51:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 18:51:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 18:51:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 18:51:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:51:26,295 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:51:26,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926561710] [2022-01-31 18:51:26,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [926561710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:51:26,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:51:26,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-01-31 18:51:26,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713759746] [2022-01-31 18:51:26,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:51:26,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-31 18:51:26,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:51:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-31 18:51:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1985, Invalid=6025, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 18:51:26,298 INFO L87 Difference]: Start difference. First operand 480 states and 482 transitions. Second operand has 90 states, 90 states have (on average 2.9444444444444446) internal successors, (265), 89 states have internal predecessors, (265), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:51:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:51:28,129 INFO L93 Difference]: Finished difference Result 1176 states and 1183 transitions. [2022-01-31 18:51:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 18:51:28,130 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.9444444444444446) internal successors, (265), 89 states have internal predecessors, (265), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 476 [2022-01-31 18:51:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:51:28,131 INFO L225 Difference]: With dead ends: 1176 [2022-01-31 18:51:28,131 INFO L226 Difference]: Without dead ends: 490 [2022-01-31 18:51:28,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3823 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3921, Invalid=13635, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:51:28,133 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 656 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:51:28,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 670 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 18:51:28,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-01-31 18:51:28,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 483. [2022-01-31 18:51:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 393 states have (on average 1.0076335877862594) internal successors, (396), 394 states have internal predecessors, (396), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:51:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 485 transitions. [2022-01-31 18:51:28,319 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 485 transitions. Word has length 476 [2022-01-31 18:51:28,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:51:28,320 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 485 transitions. [2022-01-31 18:51:28,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.9444444444444446) internal successors, (265), 89 states have internal predecessors, (265), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:51:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 485 transitions. [2022-01-31 18:51:28,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-01-31 18:51:28,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:51:28,322 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:51:28,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 18:51:28,322 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:51:28,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:51:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1090945036, now seen corresponding path program 83 times [2022-01-31 18:51:28,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:51:28,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194567372] [2022-01-31 18:51:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:51:28,324 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:51:28,324 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:51:28,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:51:28,326 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:51:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:51:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:51:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:51:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:51:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:51:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:51:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:51:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:51:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:51:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:51:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:51:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:51:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:51:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:51:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:51:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:51:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:51:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:51:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:51:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:51:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:51:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:51:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:51:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:51:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:51:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:51:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:51:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:51:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:51:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:51:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:51:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:51:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:51:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:51:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 18:51:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 18:51:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 18:51:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 18:51:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 18:51:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 18:51:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 18:51:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 18:51:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 18:51:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:51:31,329 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:51:31,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194567372] [2022-01-31 18:51:31,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1194567372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:51:31,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:51:31,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-01-31 18:51:31,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481285157] [2022-01-31 18:51:31,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:51:31,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-31 18:51:31,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:51:31,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-31 18:51:31,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=8552, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 18:51:31,331 INFO L87 Difference]: Start difference. First operand 483 states and 485 transitions. Second operand has 94 states, 93 states have (on average 2.881720430107527) internal successors, (268), 92 states have internal predecessors, (268), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:51:42,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:51:42,287 INFO L93 Difference]: Finished difference Result 497 states and 499 transitions. [2022-01-31 18:51:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-31 18:51:42,287 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.881720430107527) internal successors, (268), 92 states have internal predecessors, (268), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 479 [2022-01-31 18:51:42,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:51:42,289 INFO L225 Difference]: With dead ends: 497 [2022-01-31 18:51:42,289 INFO L226 Difference]: Without dead ends: 495 [2022-01-31 18:51:42,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4144 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=591, Invalid=32351, Unknown=0, NotChecked=0, Total=32942 [2022-01-31 18:51:42,291 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 186 mSDsluCounter, 6053 mSDsCounter, 0 mSdLazyCounter, 26620 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 6198 SdHoareTripleChecker+Invalid, 26884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 26620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:51:42,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 6198 Invalid, 26884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 26620 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-01-31 18:51:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-01-31 18:51:42,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 491. [2022-01-31 18:51:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 399 states have (on average 1.0075187969924813) internal successors, (402), 400 states have internal predecessors, (402), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:51:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 493 transitions. [2022-01-31 18:51:42,476 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 493 transitions. Word has length 479 [2022-01-31 18:51:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:51:42,477 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 493 transitions. [2022-01-31 18:51:42,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.881720430107527) internal successors, (268), 92 states have internal predecessors, (268), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 18:51:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 493 transitions. [2022-01-31 18:51:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-01-31 18:51:42,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:51:42,479 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:51:42,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 18:51:42,479 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:51:42,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:51:42,479 INFO L85 PathProgramCache]: Analyzing trace with hash 323107011, now seen corresponding path program 84 times [2022-01-31 18:51:42,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:51:42,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985701438] [2022-01-31 18:51:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:51:42,481 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:51:42,481 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:51:42,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:51:42,483 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:51:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:51:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:51:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:51:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:51:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:51:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:51:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:51:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:51:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:51:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:51:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:51:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:51:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:51:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:51:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:51:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:51:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:51:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:51:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:51:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:51:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:51:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:51:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:51:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:51:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:51:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:51:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:51:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:51:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:51:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:51:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:51:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:51:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:51:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:51:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 18:51:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 18:51:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 18:51:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 18:51:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 18:51:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 18:51:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 18:51:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 18:51:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 18:51:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 18:51:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:51:44,417 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:51:44,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985701438] [2022-01-31 18:51:44,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [985701438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:51:44,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:51:44,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-01-31 18:51:44,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178964038] [2022-01-31 18:51:44,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:51:44,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-31 18:51:44,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:51:44,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-31 18:51:44,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2075, Invalid=6297, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 18:51:44,419 INFO L87 Difference]: Start difference. First operand 491 states and 493 transitions. Second operand has 92 states, 92 states have (on average 2.9456521739130435) internal successors, (271), 91 states have internal predecessors, (271), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:51:46,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:51:46,437 INFO L93 Difference]: Finished difference Result 1203 states and 1210 transitions. [2022-01-31 18:51:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 18:51:46,437 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.9456521739130435) internal successors, (271), 91 states have internal predecessors, (271), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 487 [2022-01-31 18:51:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:51:46,439 INFO L225 Difference]: With dead ends: 1203 [2022-01-31 18:51:46,439 INFO L226 Difference]: Without dead ends: 501 [2022-01-31 18:51:46,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4100, Invalid=14260, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 18:51:46,441 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 708 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 2251 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 2251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:51:46,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 660 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 2251 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:51:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-01-31 18:51:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 494. [2022-01-31 18:51:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 402 states have (on average 1.007462686567164) internal successors, (405), 403 states have internal predecessors, (405), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:51:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 496 transitions. [2022-01-31 18:51:46,629 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 496 transitions. Word has length 487 [2022-01-31 18:51:46,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:51:46,630 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 496 transitions. [2022-01-31 18:51:46,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.9456521739130435) internal successors, (271), 91 states have internal predecessors, (271), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:51:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 496 transitions. [2022-01-31 18:51:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-01-31 18:51:46,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:51:46,632 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:51:46,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 18:51:46,632 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:51:46,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:51:46,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1460313828, now seen corresponding path program 85 times [2022-01-31 18:51:46,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:51:46,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488828553] [2022-01-31 18:51:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:51:46,634 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:51:46,634 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:51:46,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:51:46,637 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:51:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:51:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:51:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:51:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:51:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:51:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:51:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:51:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:51:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:51:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:51:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:51:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:51:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:51:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:51:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:51:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:51:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:51:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:51:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:51:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:51:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:51:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:51:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:51:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:51:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:51:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:51:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:51:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:51:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:51:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:51:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:51:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:51:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 18:51:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 18:51:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 18:51:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 18:51:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 18:51:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 18:51:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 18:51:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 18:51:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 18:51:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 18:51:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 18:51:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 18:51:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:51:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:51:49,792 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:51:49,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488828553] [2022-01-31 18:51:49,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [488828553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:51:49,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:51:49,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-01-31 18:51:49,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220405376] [2022-01-31 18:51:49,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:51:49,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-31 18:51:49,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:51:49,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-31 18:51:49,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=8926, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 18:51:49,794 INFO L87 Difference]: Start difference. First operand 494 states and 496 transitions. Second operand has 96 states, 95 states have (on average 2.8842105263157896) internal successors, (274), 94 states have internal predecessors, (274), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:52:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:52:01,237 INFO L93 Difference]: Finished difference Result 508 states and 510 transitions. [2022-01-31 18:52:01,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-31 18:52:01,238 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.8842105263157896) internal successors, (274), 94 states have internal predecessors, (274), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 490 [2022-01-31 18:52:01,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:52:01,239 INFO L225 Difference]: With dead ends: 508 [2022-01-31 18:52:01,239 INFO L226 Difference]: Without dead ends: 506 [2022-01-31 18:52:01,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4328 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=604, Invalid=33806, Unknown=0, NotChecked=0, Total=34410 [2022-01-31 18:52:01,249 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 196 mSDsluCounter, 6278 mSDsCounter, 0 mSdLazyCounter, 27489 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 6426 SdHoareTripleChecker+Invalid, 27764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 27489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:52:01,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 6426 Invalid, 27764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 27489 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-01-31 18:52:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-01-31 18:52:01,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 502. [2022-01-31 18:52:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 408 states have (on average 1.0073529411764706) internal successors, (411), 409 states have internal predecessors, (411), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:52:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 504 transitions. [2022-01-31 18:52:01,450 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 504 transitions. Word has length 490 [2022-01-31 18:52:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:52:01,450 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 504 transitions. [2022-01-31 18:52:01,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.8842105263157896) internal successors, (274), 94 states have internal predecessors, (274), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 18:52:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 504 transitions. [2022-01-31 18:52:01,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-01-31 18:52:01,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:52:01,453 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:52:01,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 18:52:01,453 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:52:01,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:52:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash 67501979, now seen corresponding path program 86 times [2022-01-31 18:52:01,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:52:01,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363905651] [2022-01-31 18:52:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:52:01,454 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:52:01,454 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:52:01,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:52:01,457 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:52:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:52:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:52:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:52:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:52:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:52:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:52:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:52:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:52:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:52:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:52:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:52:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:52:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:52:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:52:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:52:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:52:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:52:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:52:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:52:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:52:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:52:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:52:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:52:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:52:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:52:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:52:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:52:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:52:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:52:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:52:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:52:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:52:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 18:52:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 18:52:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 18:52:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 18:52:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 18:52:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 18:52:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 18:52:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 18:52:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 18:52:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 18:52:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 18:52:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 18:52:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 18:52:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:52:03,503 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:52:03,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363905651] [2022-01-31 18:52:03,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1363905651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:52:03,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:52:03,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-01-31 18:52:03,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144030923] [2022-01-31 18:52:03,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:52:03,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-31 18:52:03,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:52:03,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-31 18:52:03,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2167, Invalid=6575, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 18:52:03,505 INFO L87 Difference]: Start difference. First operand 502 states and 504 transitions. Second operand has 94 states, 94 states have (on average 2.9468085106382977) internal successors, (277), 93 states have internal predecessors, (277), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:52:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:52:05,655 INFO L93 Difference]: Finished difference Result 1230 states and 1237 transitions. [2022-01-31 18:52:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 18:52:05,655 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.9468085106382977) internal successors, (277), 93 states have internal predecessors, (277), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 498 [2022-01-31 18:52:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:52:05,657 INFO L225 Difference]: With dead ends: 1230 [2022-01-31 18:52:05,657 INFO L226 Difference]: Without dead ends: 512 [2022-01-31 18:52:05,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4181 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4283, Invalid=14899, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 18:52:05,659 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 720 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:52:05,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 785 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:52:05,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-01-31 18:52:05,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 505. [2022-01-31 18:52:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 411 states have (on average 1.0072992700729928) internal successors, (414), 412 states have internal predecessors, (414), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:52:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 507 transitions. [2022-01-31 18:52:05,844 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 507 transitions. Word has length 498 [2022-01-31 18:52:05,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:52:05,844 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 507 transitions. [2022-01-31 18:52:05,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.9468085106382977) internal successors, (277), 93 states have internal predecessors, (277), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:52:05,844 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 507 transitions. [2022-01-31 18:52:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-01-31 18:52:05,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:52:05,851 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:52:05,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 18:52:05,852 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:52:05,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:52:05,852 INFO L85 PathProgramCache]: Analyzing trace with hash -653776166, now seen corresponding path program 87 times [2022-01-31 18:52:05,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:52:05,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712278669] [2022-01-31 18:52:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:52:05,853 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:52:05,853 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:52:05,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:52:05,856 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:52:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:52:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:52:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:52:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:52:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:52:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:52:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:52:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:52:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:52:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:52:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:52:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:52:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:52:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:52:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:52:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:52:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:52:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:52:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:52:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:52:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:52:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:52:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:52:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:52:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:52:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:52:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:52:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:52:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:52:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 18:52:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 18:52:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 18:52:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 18:52:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 18:52:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 18:52:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 18:52:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 18:52:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 18:52:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-01-31 18:52:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-01-31 18:52:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-01-31 18:52:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-01-31 18:52:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-01-31 18:52:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-01-31 18:52:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-01-31 18:52:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:52:09,145 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:52:09,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712278669] [2022-01-31 18:52:09,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [712278669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:52:09,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:52:09,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-01-31 18:52:09,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161851996] [2022-01-31 18:52:09,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:52:09,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 18:52:09,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:52:09,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 18:52:09,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=9308, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 18:52:09,148 INFO L87 Difference]: Start difference. First operand 505 states and 507 transitions. Second operand has 98 states, 97 states have (on average 2.88659793814433) internal successors, (280), 96 states have internal predecessors, (280), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:52:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:52:21,155 INFO L93 Difference]: Finished difference Result 519 states and 521 transitions. [2022-01-31 18:52:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-31 18:52:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 2.88659793814433) internal successors, (280), 96 states have internal predecessors, (280), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 501 [2022-01-31 18:52:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:52:21,157 INFO L225 Difference]: With dead ends: 519 [2022-01-31 18:52:21,157 INFO L226 Difference]: Without dead ends: 517 [2022-01-31 18:52:21,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4516 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=617, Invalid=35293, Unknown=0, NotChecked=0, Total=35910 [2022-01-31 18:52:21,159 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 194 mSDsluCounter, 6651 mSDsCounter, 0 mSdLazyCounter, 29355 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 6802 SdHoareTripleChecker+Invalid, 29631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 29355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:52:21,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 6802 Invalid, 29631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 29355 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-01-31 18:52:21,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-01-31 18:52:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 513. [2022-01-31 18:52:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 417 states have (on average 1.0071942446043165) internal successors, (420), 418 states have internal predecessors, (420), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:52:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 515 transitions. [2022-01-31 18:52:21,360 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 515 transitions. Word has length 501 [2022-01-31 18:52:21,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:52:21,361 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 515 transitions. [2022-01-31 18:52:21,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 2.88659793814433) internal successors, (280), 96 states have internal predecessors, (280), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 18:52:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 515 transitions. [2022-01-31 18:52:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-01-31 18:52:21,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:52:21,363 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:52:21,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 18:52:21,363 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:52:21,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:52:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash -620022383, now seen corresponding path program 88 times [2022-01-31 18:52:21,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:52:21,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749788108] [2022-01-31 18:52:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:52:21,365 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:52:21,365 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:52:21,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:52:21,367 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:52:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:52:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:52:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:52:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:52:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:52:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:52:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:52:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:52:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:52:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:52:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:52:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:52:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:52:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:52:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:52:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:52:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:52:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:52:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:52:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:52:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:52:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:52:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:52:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:52:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:52:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:52:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:52:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:52:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:52:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 18:52:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 18:52:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 18:52:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 18:52:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 18:52:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 18:52:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 18:52:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 18:52:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 18:52:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-01-31 18:52:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-01-31 18:52:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-01-31 18:52:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-01-31 18:52:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-01-31 18:52:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-01-31 18:52:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-01-31 18:52:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-01-31 18:52:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:52:23,495 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:52:23,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749788108] [2022-01-31 18:52:23,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1749788108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:52:23,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:52:23,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-01-31 18:52:23,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507523392] [2022-01-31 18:52:23,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:52:23,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-31 18:52:23,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:52:23,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-31 18:52:23,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2261, Invalid=6859, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 18:52:23,498 INFO L87 Difference]: Start difference. First operand 513 states and 515 transitions. Second operand has 96 states, 96 states have (on average 2.9479166666666665) internal successors, (283), 95 states have internal predecessors, (283), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:52:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:52:25,602 INFO L93 Difference]: Finished difference Result 1257 states and 1264 transitions. [2022-01-31 18:52:25,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 18:52:25,603 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.9479166666666665) internal successors, (283), 95 states have internal predecessors, (283), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 509 [2022-01-31 18:52:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:52:25,607 INFO L225 Difference]: With dead ends: 1257 [2022-01-31 18:52:25,607 INFO L226 Difference]: Without dead ends: 523 [2022-01-31 18:52:25,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4366 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4470, Invalid=15552, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 18:52:25,609 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 856 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 906 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:52:25,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 694 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [906 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:52:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-01-31 18:52:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 516. [2022-01-31 18:52:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 420 states have (on average 1.0071428571428571) internal successors, (423), 421 states have internal predecessors, (423), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:52:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 518 transitions. [2022-01-31 18:52:25,810 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 518 transitions. Word has length 509 [2022-01-31 18:52:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:52:25,810 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 518 transitions. [2022-01-31 18:52:25,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.9479166666666665) internal successors, (283), 95 states have internal predecessors, (283), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:52:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 518 transitions. [2022-01-31 18:52:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-01-31 18:52:25,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:52:25,812 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:52:25,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 18:52:25,812 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:52:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:52:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash -330834702, now seen corresponding path program 89 times [2022-01-31 18:52:25,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:52:25,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377291441] [2022-01-31 18:52:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:52:25,814 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:52:25,814 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:52:25,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:52:25,816 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:52:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:52:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:52:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:52:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:52:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:52:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:52:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:52:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:52:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:52:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:52:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:52:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:52:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:52:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:52:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:52:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:52:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:52:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:52:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:52:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:52:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:52:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:52:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:52:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:52:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:52:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:52:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:52:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:52:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:52:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:52:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:52:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:52:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:52:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 18:52:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 18:52:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 18:52:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 18:52:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 18:52:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 18:52:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 18:52:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 18:52:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 18:52:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-01-31 18:52:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-01-31 18:52:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-01-31 18:52:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-01-31 18:52:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:52:29,188 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:52:29,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377291441] [2022-01-31 18:52:29,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1377291441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:52:29,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:52:29,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-01-31 18:52:29,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255390945] [2022-01-31 18:52:29,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:52:29,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-31 18:52:29,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:52:29,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-31 18:52:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=9698, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 18:52:29,190 INFO L87 Difference]: Start difference. First operand 516 states and 518 transitions. Second operand has 100 states, 99 states have (on average 2.888888888888889) internal successors, (286), 98 states have internal predecessors, (286), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:52:41,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:52:41,458 INFO L93 Difference]: Finished difference Result 530 states and 532 transitions. [2022-01-31 18:52:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-31 18:52:41,458 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.888888888888889) internal successors, (286), 98 states have internal predecessors, (286), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 512 [2022-01-31 18:52:41,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:52:41,460 INFO L225 Difference]: With dead ends: 530 [2022-01-31 18:52:41,460 INFO L226 Difference]: Without dead ends: 528 [2022-01-31 18:52:41,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4708 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=630, Invalid=36812, Unknown=0, NotChecked=0, Total=37442 [2022-01-31 18:52:41,462 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 202 mSDsluCounter, 6838 mSDsCounter, 0 mSdLazyCounter, 29933 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 6992 SdHoareTripleChecker+Invalid, 30218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 29933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:52:41,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 6992 Invalid, 30218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 29933 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-01-31 18:52:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-01-31 18:52:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 524. [2022-01-31 18:52:41,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 426 states have (on average 1.0070422535211268) internal successors, (429), 427 states have internal predecessors, (429), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:52:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 526 transitions. [2022-01-31 18:52:41,673 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 526 transitions. Word has length 512 [2022-01-31 18:52:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:52:41,673 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 526 transitions. [2022-01-31 18:52:41,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.888888888888889) internal successors, (286), 98 states have internal predecessors, (286), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 18:52:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 526 transitions. [2022-01-31 18:52:41,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-01-31 18:52:41,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:52:41,675 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:52:41,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 18:52:41,676 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:52:41,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:52:41,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1159508055, now seen corresponding path program 90 times [2022-01-31 18:52:41,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:52:41,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907496980] [2022-01-31 18:52:41,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:52:41,677 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:52:41,677 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:52:41,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:52:41,681 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:52:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:52:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 18:52:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 18:52:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 18:52:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:52:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:52:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:52:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:52:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:52:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:52:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:52:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:52:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:52:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:52:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:52:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:52:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:52:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:52:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:52:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:52:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:52:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:52:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:52:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:52:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:52:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:52:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:52:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:52:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:52:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:52:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:52:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:52:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:52:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 18:52:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 18:52:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 18:52:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 18:52:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 18:52:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 18:52:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 18:52:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 18:52:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 18:52:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-01-31 18:52:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-01-31 18:52:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-01-31 18:52:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-01-31 18:52:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-01-31 18:52:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:52:43,843 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:52:43,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907496980] [2022-01-31 18:52:43,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [907496980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:52:43,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:52:43,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-01-31 18:52:43,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885412365] [2022-01-31 18:52:43,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:52:43,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 18:52:43,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:52:43,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 18:52:43,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2357, Invalid=7149, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 18:52:43,845 INFO L87 Difference]: Start difference. First operand 524 states and 526 transitions. Second operand has 98 states, 98 states have (on average 2.9489795918367347) internal successors, (289), 97 states have internal predecessors, (289), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:52:46,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:52:46,175 INFO L93 Difference]: Finished difference Result 1284 states and 1291 transitions. [2022-01-31 18:52:46,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 18:52:46,176 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.9489795918367347) internal successors, (289), 97 states have internal predecessors, (289), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 520 [2022-01-31 18:52:46,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:52:46,177 INFO L225 Difference]: With dead ends: 1284 [2022-01-31 18:52:46,177 INFO L226 Difference]: Without dead ends: 534 [2022-01-31 18:52:46,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4555 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4661, Invalid=16219, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 18:52:46,179 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 824 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 3484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:52:46,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 832 Invalid, 3484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:52:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-01-31 18:52:46,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 527. [2022-01-31 18:52:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 429 states have (on average 1.006993006993007) internal successors, (432), 430 states have internal predecessors, (432), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:52:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 529 transitions. [2022-01-31 18:52:46,392 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 529 transitions. Word has length 520 [2022-01-31 18:52:46,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:52:46,392 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 529 transitions. [2022-01-31 18:52:46,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.9489795918367347) internal successors, (289), 97 states have internal predecessors, (289), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:52:46,392 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 529 transitions. [2022-01-31 18:52:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2022-01-31 18:52:46,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:52:46,395 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:52:46,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 18:52:46,395 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:52:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:52:46,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1722289752, now seen corresponding path program 91 times [2022-01-31 18:52:46,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:52:46,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829890345] [2022-01-31 18:52:46,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:52:46,397 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:52:46,397 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:52:46,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:52:46,399 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:52:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:52:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:52:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:52:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:52:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:52:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:52:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:52:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:52:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:52:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:52:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:52:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:52:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:52:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:52:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:52:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:52:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:52:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:52:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:52:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:52:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:52:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:52:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:52:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:52:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:52:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:52:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:52:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:52:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:52:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:52:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 18:52:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 18:52:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 18:52:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 18:52:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 18:52:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 18:52:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 18:52:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 18:52:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 18:52:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 18:52:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 18:52:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 18:52:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 18:52:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 18:52:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 18:52:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 18:52:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 18:52:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:52:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:52:49,899 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:52:49,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829890345] [2022-01-31 18:52:49,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [829890345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:52:49,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:52:49,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-01-31 18:52:49,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051595185] [2022-01-31 18:52:49,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:52:49,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-31 18:52:49,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:52:49,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-31 18:52:49,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=10096, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 18:52:49,901 INFO L87 Difference]: Start difference. First operand 527 states and 529 transitions. Second operand has 102 states, 101 states have (on average 2.891089108910891) internal successors, (292), 100 states have internal predecessors, (292), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:53:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:53:02,692 INFO L93 Difference]: Finished difference Result 541 states and 543 transitions. [2022-01-31 18:53:02,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-31 18:53:02,693 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 2.891089108910891) internal successors, (292), 100 states have internal predecessors, (292), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 523 [2022-01-31 18:53:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:53:02,694 INFO L225 Difference]: With dead ends: 541 [2022-01-31 18:53:02,695 INFO L226 Difference]: Without dead ends: 539 [2022-01-31 18:53:02,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4904 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=643, Invalid=38363, Unknown=0, NotChecked=0, Total=39006 [2022-01-31 18:53:02,697 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 208 mSDsluCounter, 7127 mSDsCounter, 0 mSdLazyCounter, 31197 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 7284 SdHoareTripleChecker+Invalid, 31490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 31197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:53:02,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 7284 Invalid, 31490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 31197 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-01-31 18:53:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-31 18:53:02,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 535. [2022-01-31 18:53:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 435 states have (on average 1.006896551724138) internal successors, (438), 436 states have internal predecessors, (438), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:53:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 537 transitions. [2022-01-31 18:53:02,918 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 537 transitions. Word has length 523 [2022-01-31 18:53:02,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:53:02,918 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 537 transitions. [2022-01-31 18:53:02,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 2.891089108910891) internal successors, (292), 100 states have internal predecessors, (292), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 18:53:02,918 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 537 transitions. [2022-01-31 18:53:02,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-01-31 18:53:02,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:53:02,921 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:53:02,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 18:53:02,921 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:53:02,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:53:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash 424037983, now seen corresponding path program 92 times [2022-01-31 18:53:02,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:53:02,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255486682] [2022-01-31 18:53:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:53:02,923 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:53:02,923 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:53:02,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:53:02,925 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:53:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:53:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:53:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:53:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 18:53:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:53:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:53:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:53:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:53:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:53:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:53:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:53:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:53:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:53:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:53:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:53:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:53:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:53:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:53:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:53:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:53:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:53:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:53:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:53:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:53:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:53:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:53:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:53:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:53:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:53:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:53:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 18:53:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 18:53:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 18:53:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 18:53:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 18:53:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 18:53:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 18:53:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 18:53:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 18:53:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 18:53:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 18:53:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 18:53:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 18:53:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 18:53:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 18:53:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 18:53:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 18:53:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 18:53:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:53:05,171 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:53:05,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255486682] [2022-01-31 18:53:05,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1255486682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:53:05,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:53:05,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-01-31 18:53:05,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787449920] [2022-01-31 18:53:05,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:53:05,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-31 18:53:05,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:53:05,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-31 18:53:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2455, Invalid=7445, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 18:53:05,176 INFO L87 Difference]: Start difference. First operand 535 states and 537 transitions. Second operand has 100 states, 100 states have (on average 2.95) internal successors, (295), 99 states have internal predecessors, (295), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:53:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:53:07,599 INFO L93 Difference]: Finished difference Result 1311 states and 1318 transitions. [2022-01-31 18:53:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 18:53:07,600 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.95) internal successors, (295), 99 states have internal predecessors, (295), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 531 [2022-01-31 18:53:07,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:53:07,602 INFO L225 Difference]: With dead ends: 1311 [2022-01-31 18:53:07,602 INFO L226 Difference]: Without dead ends: 545 [2022-01-31 18:53:07,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4748 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4856, Invalid=16900, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 18:53:07,604 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 812 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:53:07,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 773 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [862 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:53:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-01-31 18:53:07,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 538. [2022-01-31 18:53:07,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 438 states have (on average 1.0068493150684932) internal successors, (441), 439 states have internal predecessors, (441), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:53:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 540 transitions. [2022-01-31 18:53:07,862 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 540 transitions. Word has length 531 [2022-01-31 18:53:07,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:53:07,862 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 540 transitions. [2022-01-31 18:53:07,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.95) internal successors, (295), 99 states have internal predecessors, (295), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:53:07,862 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 540 transitions. [2022-01-31 18:53:07,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-01-31 18:53:07,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:53:07,865 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:53:07,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 18:53:07,865 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:53:07,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:53:07,865 INFO L85 PathProgramCache]: Analyzing trace with hash -850999552, now seen corresponding path program 93 times [2022-01-31 18:53:07,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:53:07,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351076157] [2022-01-31 18:53:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:53:07,867 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:53:07,867 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:53:07,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:53:07,870 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:53:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:53:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:53:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:53:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:53:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:53:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:53:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:53:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:53:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:53:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:53:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:53:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:53:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:53:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:53:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:53:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:53:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:53:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:53:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:53:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:53:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:53:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:53:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:53:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:53:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:53:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:53:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:53:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:53:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:53:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 18:53:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 18:53:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 18:53:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 18:53:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 18:53:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 18:53:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 18:53:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 18:53:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 18:53:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 18:53:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 18:53:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 18:53:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 18:53:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 18:53:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 18:53:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 18:53:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 18:53:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 18:53:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 18:53:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:53:11,580 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:53:11,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351076157] [2022-01-31 18:53:11,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1351076157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:53:11,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:53:11,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-01-31 18:53:11,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603261516] [2022-01-31 18:53:11,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:53:11,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-31 18:53:11,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:53:11,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-31 18:53:11,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=10502, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 18:53:11,582 INFO L87 Difference]: Start difference. First operand 538 states and 540 transitions. Second operand has 104 states, 103 states have (on average 2.8932038834951457) internal successors, (298), 102 states have internal predecessors, (298), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:53:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:53:25,145 INFO L93 Difference]: Finished difference Result 552 states and 554 transitions. [2022-01-31 18:53:25,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-31 18:53:25,146 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.8932038834951457) internal successors, (298), 102 states have internal predecessors, (298), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 534 [2022-01-31 18:53:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:53:25,147 INFO L225 Difference]: With dead ends: 552 [2022-01-31 18:53:25,147 INFO L226 Difference]: Without dead ends: 550 [2022-01-31 18:53:25,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5104 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=656, Invalid=39946, Unknown=0, NotChecked=0, Total=40602 [2022-01-31 18:53:25,150 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 206 mSDsluCounter, 7473 mSDsCounter, 0 mSdLazyCounter, 32830 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 7633 SdHoareTripleChecker+Invalid, 33124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 32830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:53:25,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 7633 Invalid, 33124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [294 Valid, 32830 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-01-31 18:53:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-01-31 18:53:25,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 546. [2022-01-31 18:53:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 444 states have (on average 1.0067567567567568) internal successors, (447), 445 states have internal predecessors, (447), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:53:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 548 transitions. [2022-01-31 18:53:25,377 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 548 transitions. Word has length 534 [2022-01-31 18:53:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:53:25,377 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 548 transitions. [2022-01-31 18:53:25,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.8932038834951457) internal successors, (298), 102 states have internal predecessors, (298), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 18:53:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 548 transitions. [2022-01-31 18:53:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-01-31 18:53:25,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:53:25,380 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:53:25,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 18:53:25,380 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:53:25,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:53:25,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1729514423, now seen corresponding path program 94 times [2022-01-31 18:53:25,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:53:25,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548438917] [2022-01-31 18:53:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:53:25,382 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:53:25,382 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:53:25,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:53:25,385 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:53:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:53:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:53:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:53:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:53:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:53:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:53:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:53:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:53:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:53:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:53:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:53:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:53:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:53:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:53:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:53:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:53:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:53:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:53:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:53:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:53:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:53:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:53:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:53:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:53:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:53:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:53:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:53:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:53:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:53:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 18:53:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 18:53:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 18:53:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 18:53:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 18:53:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 18:53:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 18:53:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 18:53:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 18:53:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 18:53:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 18:53:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 18:53:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 18:53:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 18:53:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 18:53:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 18:53:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 18:53:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 18:53:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 18:53:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 18:53:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:53:27,735 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:53:27,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548438917] [2022-01-31 18:53:27,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1548438917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:53:27,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:53:27,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-01-31 18:53:27,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579833620] [2022-01-31 18:53:27,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:53:27,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-31 18:53:27,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:53:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-31 18:53:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2555, Invalid=7747, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 18:53:27,737 INFO L87 Difference]: Start difference. First operand 546 states and 548 transitions. Second operand has 102 states, 102 states have (on average 2.950980392156863) internal successors, (301), 101 states have internal predecessors, (301), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:53:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:53:30,051 INFO L93 Difference]: Finished difference Result 1338 states and 1345 transitions. [2022-01-31 18:53:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 18:53:30,052 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.950980392156863) internal successors, (301), 101 states have internal predecessors, (301), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 542 [2022-01-31 18:53:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:53:30,054 INFO L225 Difference]: With dead ends: 1338 [2022-01-31 18:53:30,054 INFO L226 Difference]: Without dead ends: 556 [2022-01-31 18:53:30,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4945 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5055, Invalid=17595, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 18:53:30,056 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 760 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:53:30,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 747 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:53:30,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-31 18:53:30,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 549. [2022-01-31 18:53:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 447 states have (on average 1.0067114093959733) internal successors, (450), 448 states have internal predecessors, (450), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:53:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 551 transitions. [2022-01-31 18:53:30,287 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 551 transitions. Word has length 542 [2022-01-31 18:53:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:53:30,287 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 551 transitions. [2022-01-31 18:53:30,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.950980392156863) internal successors, (301), 101 states have internal predecessors, (301), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:53:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 551 transitions. [2022-01-31 18:53:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2022-01-31 18:53:30,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:53:30,290 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:53:30,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 18:53:30,290 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:53:30,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:53:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1330893942, now seen corresponding path program 95 times [2022-01-31 18:53:30,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:53:30,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22006231] [2022-01-31 18:53:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:53:30,291 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:53:30,292 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:53:30,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:53:30,294 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:53:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:53:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:53:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:53:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:53:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:53:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:53:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:53:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:53:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:53:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:53:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:53:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:53:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:53:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:53:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:53:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:53:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:53:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:53:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:53:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:53:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:53:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:53:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:53:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:53:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:53:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:53:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:53:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:53:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:53:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:53:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:53:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 18:53:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 18:53:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 18:53:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 18:53:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 18:53:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 18:53:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 18:53:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 18:53:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 18:53:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 18:53:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 18:53:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 18:53:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 18:53:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 18:53:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 18:53:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 18:53:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 18:53:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 18:53:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:53:34,176 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:53:34,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22006231] [2022-01-31 18:53:34,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [22006231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:53:34,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:53:34,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-01-31 18:53:34,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654111977] [2022-01-31 18:53:34,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:53:34,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-31 18:53:34,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:53:34,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-31 18:53:34,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=10916, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 18:53:34,179 INFO L87 Difference]: Start difference. First operand 549 states and 551 transitions. Second operand has 106 states, 105 states have (on average 2.895238095238095) internal successors, (304), 104 states have internal predecessors, (304), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:53:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:53:48,364 INFO L93 Difference]: Finished difference Result 563 states and 565 transitions. [2022-01-31 18:53:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-31 18:53:48,364 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 2.895238095238095) internal successors, (304), 104 states have internal predecessors, (304), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 545 [2022-01-31 18:53:48,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:53:48,366 INFO L225 Difference]: With dead ends: 563 [2022-01-31 18:53:48,366 INFO L226 Difference]: Without dead ends: 561 [2022-01-31 18:53:48,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5308 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=669, Invalid=41561, Unknown=0, NotChecked=0, Total=42230 [2022-01-31 18:53:48,368 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 210 mSDsluCounter, 7775 mSDsCounter, 0 mSdLazyCounter, 34150 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 7938 SdHoareTripleChecker+Invalid, 34450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 34150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:53:48,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 7938 Invalid, 34450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [300 Valid, 34150 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-01-31 18:53:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-31 18:53:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 557. [2022-01-31 18:53:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 453 states have (on average 1.0066225165562914) internal successors, (456), 454 states have internal predecessors, (456), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:53:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 559 transitions. [2022-01-31 18:53:48,618 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 559 transitions. Word has length 545 [2022-01-31 18:53:48,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:53:48,619 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 559 transitions. [2022-01-31 18:53:48,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 2.895238095238095) internal successors, (304), 104 states have internal predecessors, (304), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 18:53:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 559 transitions. [2022-01-31 18:53:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-01-31 18:53:48,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:53:48,621 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:53:48,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 18:53:48,622 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:53:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:53:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1565623085, now seen corresponding path program 96 times [2022-01-31 18:53:48,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:53:48,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039036188] [2022-01-31 18:53:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:53:48,623 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:53:48,623 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:53:48,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:53:48,626 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:53:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:50,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:53:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:53:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 18:53:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 18:53:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:53:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:53:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:53:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:53:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:53:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:53:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:53:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:53:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:53:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:53:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:53:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:53:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:53:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:53:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:53:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:53:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:53:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:53:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:53:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:53:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:53:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:53:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:53:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:53:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:53:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:53:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:53:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 18:53:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 18:53:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 18:53:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 18:53:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 18:53:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 18:53:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 18:53:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 18:53:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 18:53:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 18:53:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 18:53:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 18:53:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 18:53:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 18:53:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 18:53:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 18:53:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 18:53:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 18:53:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 18:53:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:53:51,079 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:53:51,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039036188] [2022-01-31 18:53:51,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2039036188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:53:51,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:53:51,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-01-31 18:53:51,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176995408] [2022-01-31 18:53:51,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:53:51,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-31 18:53:51,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:53:51,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-31 18:53:51,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2657, Invalid=8055, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 18:53:51,081 INFO L87 Difference]: Start difference. First operand 557 states and 559 transitions. Second operand has 104 states, 104 states have (on average 2.951923076923077) internal successors, (307), 103 states have internal predecessors, (307), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:53:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:53:53,603 INFO L93 Difference]: Finished difference Result 1365 states and 1372 transitions. [2022-01-31 18:53:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-31 18:53:53,604 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.951923076923077) internal successors, (307), 103 states have internal predecessors, (307), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 553 [2022-01-31 18:53:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:53:53,606 INFO L225 Difference]: With dead ends: 1365 [2022-01-31 18:53:53,606 INFO L226 Difference]: Without dead ends: 567 [2022-01-31 18:53:53,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5146 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5258, Invalid=18304, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 18:53:53,608 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 856 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:53:53,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 833 Invalid, 3422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:53:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-01-31 18:53:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 560. [2022-01-31 18:53:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 456 states have (on average 1.006578947368421) internal successors, (459), 457 states have internal predecessors, (459), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:53:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 562 transitions. [2022-01-31 18:53:53,854 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 562 transitions. Word has length 553 [2022-01-31 18:53:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:53:53,854 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 562 transitions. [2022-01-31 18:53:53,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.951923076923077) internal successors, (307), 103 states have internal predecessors, (307), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:53:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 562 transitions. [2022-01-31 18:53:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2022-01-31 18:53:53,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:53:53,858 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:53:53,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 18:53:53,858 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:53:53,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:53:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash -94806770, now seen corresponding path program 97 times [2022-01-31 18:53:53,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:53:53,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963460307] [2022-01-31 18:53:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:53:53,859 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:53:53,859 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:53:53,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:53:53,862 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:53:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:53:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:53:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:53:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:53:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:53:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:53:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:53:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:53:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:53:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:53:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:53:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:53:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:53:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:53:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:53:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:53:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:53:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:53:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:53:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:53:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:53:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:53:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:53:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:53:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:53:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:53:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:53:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:53:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:53:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 18:53:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 18:53:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 18:53:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 18:53:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 18:53:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 18:53:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 18:53:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 18:53:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 18:53:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 18:53:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 18:53:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-01-31 18:53:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-01-31 18:53:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-01-31 18:53:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-01-31 18:53:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-01-31 18:53:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-01-31 18:53:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-01-31 18:53:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-01-31 18:53:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-01-31 18:53:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-01-31 18:53:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:53:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:53:57,822 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:53:57,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963460307] [2022-01-31 18:53:57,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1963460307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:53:57,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:53:57,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-01-31 18:53:57,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055460380] [2022-01-31 18:53:57,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:53:57,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-31 18:53:57,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:53:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-31 18:53:57,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=11338, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 18:53:57,824 INFO L87 Difference]: Start difference. First operand 560 states and 562 transitions. Second operand has 108 states, 107 states have (on average 2.897196261682243) internal successors, (310), 106 states have internal predecessors, (310), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:54:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:54:12,483 INFO L93 Difference]: Finished difference Result 574 states and 576 transitions. [2022-01-31 18:54:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-01-31 18:54:12,484 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 2.897196261682243) internal successors, (310), 106 states have internal predecessors, (310), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 556 [2022-01-31 18:54:12,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:54:12,485 INFO L225 Difference]: With dead ends: 574 [2022-01-31 18:54:12,486 INFO L226 Difference]: Without dead ends: 572 [2022-01-31 18:54:12,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5516 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=682, Invalid=43208, Unknown=0, NotChecked=0, Total=43890 [2022-01-31 18:54:12,488 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 214 mSDsluCounter, 8136 mSDsCounter, 0 mSdLazyCounter, 35860 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 8302 SdHoareTripleChecker+Invalid, 36166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 35860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:54:12,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 8302 Invalid, 36166 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [306 Valid, 35860 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-01-31 18:54:12,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-01-31 18:54:12,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 568. [2022-01-31 18:54:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 462 states have (on average 1.0064935064935066) internal successors, (465), 463 states have internal predecessors, (465), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:54:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 570 transitions. [2022-01-31 18:54:12,745 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 570 transitions. Word has length 556 [2022-01-31 18:54:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:54:12,745 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 570 transitions. [2022-01-31 18:54:12,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 2.897196261682243) internal successors, (310), 106 states have internal predecessors, (310), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 18:54:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 570 transitions. [2022-01-31 18:54:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2022-01-31 18:54:12,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:54:12,748 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:54:12,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 18:54:12,748 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:54:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:54:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1762593851, now seen corresponding path program 98 times [2022-01-31 18:54:12,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:54:12,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769502297] [2022-01-31 18:54:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:54:12,750 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:54:12,750 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:54:12,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:54:12,753 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:54:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:54:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 18:54:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 18:54:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 18:54:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:54:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:54:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:54:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:54:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:54:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:54:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:54:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:54:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:54:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:54:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:54:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:54:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:54:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:54:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:54:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:54:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:54:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:54:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:54:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:54:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:54:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:54:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:54:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:54:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:54:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 18:54:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 18:54:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 18:54:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 18:54:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 18:54:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 18:54:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 18:54:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 18:54:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 18:54:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 18:54:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 18:54:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-01-31 18:54:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-01-31 18:54:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-01-31 18:54:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-01-31 18:54:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-01-31 18:54:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-01-31 18:54:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-01-31 18:54:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-01-31 18:54:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-01-31 18:54:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-01-31 18:54:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-01-31 18:54:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:54:15,286 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:54:15,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769502297] [2022-01-31 18:54:15,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1769502297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:54:15,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:54:15,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-01-31 18:54:15,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532157493] [2022-01-31 18:54:15,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:54:15,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-31 18:54:15,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:54:15,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-31 18:54:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2761, Invalid=8369, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 18:54:15,288 INFO L87 Difference]: Start difference. First operand 568 states and 570 transitions. Second operand has 106 states, 106 states have (on average 2.952830188679245) internal successors, (313), 105 states have internal predecessors, (313), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:54:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:54:17,925 INFO L93 Difference]: Finished difference Result 1392 states and 1399 transitions. [2022-01-31 18:54:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-31 18:54:17,925 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.952830188679245) internal successors, (313), 105 states have internal predecessors, (313), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 564 [2022-01-31 18:54:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:54:17,927 INFO L225 Difference]: With dead ends: 1392 [2022-01-31 18:54:17,927 INFO L226 Difference]: Without dead ends: 578 [2022-01-31 18:54:17,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5351 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5465, Invalid=19027, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 18:54:17,929 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 764 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 2888 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 2888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:54:17,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 903 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 2888 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:54:17,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-01-31 18:54:18,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 571. [2022-01-31 18:54:18,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 465 states have (on average 1.0064516129032257) internal successors, (468), 466 states have internal predecessors, (468), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:54:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 573 transitions. [2022-01-31 18:54:18,185 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 573 transitions. Word has length 564 [2022-01-31 18:54:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:54:18,185 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 573 transitions. [2022-01-31 18:54:18,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.952830188679245) internal successors, (313), 105 states have internal predecessors, (313), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:54:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 573 transitions. [2022-01-31 18:54:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2022-01-31 18:54:18,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:54:18,188 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:54:18,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 18:54:18,188 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:54:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:54:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1210461372, now seen corresponding path program 99 times [2022-01-31 18:54:18,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:54:18,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742531643] [2022-01-31 18:54:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:54:18,189 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:54:18,189 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:54:18,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:54:18,192 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:54:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:54:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:54:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:54:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:54:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:54:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:54:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:54:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:54:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:54:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:54:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:54:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:54:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:54:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:54:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:54:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:54:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:54:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:54:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:54:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:54:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:54:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:54:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:54:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:54:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:54:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:54:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:54:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:54:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:54:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:54:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:54:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 18:54:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 18:54:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 18:54:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 18:54:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 18:54:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 18:54:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 18:54:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 18:54:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 18:54:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 18:54:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-01-31 18:54:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-01-31 18:54:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-01-31 18:54:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-01-31 18:54:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-01-31 18:54:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-01-31 18:54:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-01-31 18:54:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-01-31 18:54:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-01-31 18:54:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-01-31 18:54:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:54:22,345 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:54:22,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742531643] [2022-01-31 18:54:22,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1742531643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:54:22,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:54:22,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-01-31 18:54:22,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084362704] [2022-01-31 18:54:22,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:54:22,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-31 18:54:22,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:54:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-31 18:54:22,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=11768, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 18:54:22,347 INFO L87 Difference]: Start difference. First operand 571 states and 573 transitions. Second operand has 110 states, 109 states have (on average 2.8990825688073394) internal successors, (316), 108 states have internal predecessors, (316), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:54:37,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:54:37,508 INFO L93 Difference]: Finished difference Result 585 states and 587 transitions. [2022-01-31 18:54:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-01-31 18:54:37,508 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 2.8990825688073394) internal successors, (316), 108 states have internal predecessors, (316), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 567 [2022-01-31 18:54:37,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:54:37,509 INFO L225 Difference]: With dead ends: 585 [2022-01-31 18:54:37,510 INFO L226 Difference]: Without dead ends: 583 [2022-01-31 18:54:37,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5728 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=695, Invalid=44887, Unknown=0, NotChecked=0, Total=45582 [2022-01-31 18:54:37,512 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 222 mSDsluCounter, 8343 mSDsCounter, 0 mSdLazyCounter, 36501 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 8512 SdHoareTripleChecker+Invalid, 36816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 36501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:54:37,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 8512 Invalid, 36816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [315 Valid, 36501 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-01-31 18:54:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-01-31 18:54:37,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 579. [2022-01-31 18:54:37,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 471 states have (on average 1.0063694267515924) internal successors, (474), 472 states have internal predecessors, (474), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:54:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 581 transitions. [2022-01-31 18:54:37,783 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 581 transitions. Word has length 567 [2022-01-31 18:54:37,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:54:37,783 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 581 transitions. [2022-01-31 18:54:37,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 2.8990825688073394) internal successors, (316), 108 states have internal predecessors, (316), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 18:54:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 581 transitions. [2022-01-31 18:54:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-01-31 18:54:37,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:54:37,786 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:54:37,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 18:54:37,786 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:54:37,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:54:37,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1509239813, now seen corresponding path program 100 times [2022-01-31 18:54:37,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:54:37,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76076256] [2022-01-31 18:54:37,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:54:37,790 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:54:37,791 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:54:37,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:54:37,793 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:54:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:54:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:54:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:54:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:54:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:54:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:54:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:54:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:54:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:54:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:54:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:54:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:54:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:54:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:54:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:54:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:54:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:54:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:54:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:54:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:54:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:54:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:54:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:54:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:54:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:54:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:54:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:54:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:54:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:54:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:54:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:54:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 18:54:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 18:54:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 18:54:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 18:54:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 18:54:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 18:54:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 18:54:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 18:54:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 18:54:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 18:54:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-01-31 18:54:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-01-31 18:54:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-01-31 18:54:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-01-31 18:54:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-01-31 18:54:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-01-31 18:54:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-01-31 18:54:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-01-31 18:54:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-01-31 18:54:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-01-31 18:54:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-01-31 18:54:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:54:40,437 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:54:40,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76076256] [2022-01-31 18:54:40,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [76076256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:54:40,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:54:40,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-01-31 18:54:40,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995497678] [2022-01-31 18:54:40,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:54:40,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-31 18:54:40,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:54:40,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-31 18:54:40,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2867, Invalid=8689, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 18:54:40,439 INFO L87 Difference]: Start difference. First operand 579 states and 581 transitions. Second operand has 108 states, 108 states have (on average 2.9537037037037037) internal successors, (319), 107 states have internal predecessors, (319), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:54:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:54:42,934 INFO L93 Difference]: Finished difference Result 1419 states and 1426 transitions. [2022-01-31 18:54:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 18:54:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.9537037037037037) internal successors, (319), 107 states have internal predecessors, (319), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 575 [2022-01-31 18:54:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:54:42,936 INFO L225 Difference]: With dead ends: 1419 [2022-01-31 18:54:42,936 INFO L226 Difference]: Without dead ends: 589 [2022-01-31 18:54:42,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5560 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5676, Invalid=19764, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 18:54:42,939 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 892 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:54:42,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 866 Invalid, 3103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:54:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-01-31 18:54:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 582. [2022-01-31 18:54:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 474 states have (on average 1.0063291139240507) internal successors, (477), 475 states have internal predecessors, (477), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:54:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 584 transitions. [2022-01-31 18:54:43,216 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 584 transitions. Word has length 575 [2022-01-31 18:54:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:54:43,216 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 584 transitions. [2022-01-31 18:54:43,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.9537037037037037) internal successors, (319), 107 states have internal predecessors, (319), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:54:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 584 transitions. [2022-01-31 18:54:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2022-01-31 18:54:43,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:54:43,219 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:54:43,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 18:54:43,219 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:54:43,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:54:43,219 INFO L85 PathProgramCache]: Analyzing trace with hash -195977444, now seen corresponding path program 101 times [2022-01-31 18:54:43,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:54:43,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600910050] [2022-01-31 18:54:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:54:43,220 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:54:43,220 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:54:43,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:54:43,223 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:54:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:54:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:54:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:54:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:54:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:54:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:54:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:54:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:54:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:54:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:54:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:54:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:54:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:54:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:54:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:54:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:54:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:54:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:54:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:54:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:54:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:54:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:54:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:54:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:54:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:54:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:54:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:54:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:54:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:54:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 18:54:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 18:54:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 18:54:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 18:54:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 18:54:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 18:54:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 18:54:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 18:54:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 18:54:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 18:54:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 18:54:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 18:54:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 18:54:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 18:54:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 18:54:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 18:54:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-01-31 18:54:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-01-31 18:54:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-01-31 18:54:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-01-31 18:54:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-01-31 18:54:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-01-31 18:54:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-01-31 18:54:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:54:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:54:47,494 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:54:47,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600910050] [2022-01-31 18:54:47,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [600910050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:54:47,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:54:47,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-01-31 18:54:47,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040719986] [2022-01-31 18:54:47,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:54:47,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-01-31 18:54:47,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:54:47,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-01-31 18:54:47,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=12206, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 18:54:47,495 INFO L87 Difference]: Start difference. First operand 582 states and 584 transitions. Second operand has 112 states, 111 states have (on average 2.900900900900901) internal successors, (322), 110 states have internal predecessors, (322), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:55:03,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:55:03,226 INFO L93 Difference]: Finished difference Result 596 states and 598 transitions. [2022-01-31 18:55:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-01-31 18:55:03,226 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.900900900900901) internal successors, (322), 110 states have internal predecessors, (322), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 578 [2022-01-31 18:55:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:55:03,227 INFO L225 Difference]: With dead ends: 596 [2022-01-31 18:55:03,227 INFO L226 Difference]: Without dead ends: 594 [2022-01-31 18:55:03,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5944 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=708, Invalid=46598, Unknown=0, NotChecked=0, Total=47306 [2022-01-31 18:55:03,230 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 228 mSDsluCounter, 8662 mSDsCounter, 0 mSdLazyCounter, 37892 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 8834 SdHoareTripleChecker+Invalid, 38215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 37892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:55:03,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 8834 Invalid, 38215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [323 Valid, 37892 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-01-31 18:55:03,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-01-31 18:55:03,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 590. [2022-01-31 18:55:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 480 states have (on average 1.00625) internal successors, (483), 481 states have internal predecessors, (483), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:55:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 592 transitions. [2022-01-31 18:55:03,508 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 592 transitions. Word has length 578 [2022-01-31 18:55:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:55:03,508 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 592 transitions. [2022-01-31 18:55:03,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 2.900900900900901) internal successors, (322), 110 states have internal predecessors, (322), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 18:55:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 592 transitions. [2022-01-31 18:55:03,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2022-01-31 18:55:03,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:55:03,511 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:55:03,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 18:55:03,511 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:55:03,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:55:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash -649771053, now seen corresponding path program 102 times [2022-01-31 18:55:03,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:55:03,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922827165] [2022-01-31 18:55:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:55:03,512 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:55:03,512 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:55:03,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:55:03,515 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:55:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:55:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:55:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:55:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:55:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:55:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:55:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:55:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:55:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:55:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:55:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:55:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:55:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:55:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:55:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:55:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:55:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:55:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:55:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:55:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:55:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:55:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:55:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:55:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:55:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:55:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:55:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:55:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:55:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 18:55:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 18:55:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 18:55:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 18:55:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 18:55:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 18:55:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 18:55:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 18:55:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 18:55:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 18:55:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 18:55:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 18:55:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 18:55:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 18:55:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 18:55:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 18:55:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 18:55:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-01-31 18:55:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-01-31 18:55:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-01-31 18:55:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-01-31 18:55:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-01-31 18:55:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-01-31 18:55:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-01-31 18:55:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-01-31 18:55:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:55:06,220 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:55:06,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922827165] [2022-01-31 18:55:06,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1922827165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:55:06,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:55:06,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-01-31 18:55:06,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25905354] [2022-01-31 18:55:06,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:55:06,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-31 18:55:06,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:55:06,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-31 18:55:06,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2975, Invalid=9015, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 18:55:06,223 INFO L87 Difference]: Start difference. First operand 590 states and 592 transitions. Second operand has 110 states, 110 states have (on average 2.9545454545454546) internal successors, (325), 109 states have internal predecessors, (325), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:55:09,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:55:09,114 INFO L93 Difference]: Finished difference Result 1446 states and 1453 transitions. [2022-01-31 18:55:09,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-31 18:55:09,114 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.9545454545454546) internal successors, (325), 109 states have internal predecessors, (325), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 586 [2022-01-31 18:55:09,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:55:09,116 INFO L225 Difference]: With dead ends: 1446 [2022-01-31 18:55:09,116 INFO L226 Difference]: Without dead ends: 600 [2022-01-31 18:55:09,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5773 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5891, Invalid=20515, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 18:55:09,118 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 916 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 965 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 4203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 965 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:55:09,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 899 Invalid, 4203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [965 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:55:09,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-01-31 18:55:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 593. [2022-01-31 18:55:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 483 states have (on average 1.0062111801242235) internal successors, (486), 484 states have internal predecessors, (486), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:55:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 595 transitions. [2022-01-31 18:55:09,398 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 595 transitions. Word has length 586 [2022-01-31 18:55:09,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:55:09,398 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 595 transitions. [2022-01-31 18:55:09,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.9545454545454546) internal successors, (325), 109 states have internal predecessors, (325), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:55:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 595 transitions. [2022-01-31 18:55:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-01-31 18:55:09,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:55:09,401 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:55:09,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 18:55:09,401 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:55:09,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:55:09,401 INFO L85 PathProgramCache]: Analyzing trace with hash -548934126, now seen corresponding path program 103 times [2022-01-31 18:55:09,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:55:09,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822313906] [2022-01-31 18:55:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:55:09,402 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:55:09,402 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:55:09,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:55:09,405 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:55:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:55:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:55:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:55:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:55:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:55:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:55:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:55:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:55:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:55:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:55:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:55:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:55:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:55:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:55:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:55:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:55:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:55:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:55:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:55:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:55:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:55:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:55:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:55:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:55:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:55:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:55:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 18:55:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 18:55:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 18:55:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 18:55:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 18:55:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 18:55:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 18:55:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 18:55:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 18:55:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-01-31 18:55:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-01-31 18:55:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-01-31 18:55:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-01-31 18:55:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-01-31 18:55:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-01-31 18:55:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-01-31 18:55:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-01-31 18:55:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2022-01-31 18:55:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2022-01-31 18:55:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2022-01-31 18:55:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2022-01-31 18:55:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-01-31 18:55:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-01-31 18:55:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2022-01-31 18:55:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2022-01-31 18:55:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2022-01-31 18:55:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2022-01-31 18:55:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:55:13,911 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:55:13,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822313906] [2022-01-31 18:55:13,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1822313906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:55:13,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:55:13,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-01-31 18:55:13,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109804024] [2022-01-31 18:55:13,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:55:13,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-31 18:55:13,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:55:13,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-31 18:55:13,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=12652, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 18:55:13,913 INFO L87 Difference]: Start difference. First operand 593 states and 595 transitions. Second operand has 114 states, 113 states have (on average 2.9026548672566372) internal successors, (328), 112 states have internal predecessors, (328), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:55:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:55:30,350 INFO L93 Difference]: Finished difference Result 607 states and 609 transitions. [2022-01-31 18:55:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-01-31 18:55:30,350 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 2.9026548672566372) internal successors, (328), 112 states have internal predecessors, (328), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 589 [2022-01-31 18:55:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:55:30,351 INFO L225 Difference]: With dead ends: 607 [2022-01-31 18:55:30,351 INFO L226 Difference]: Without dead ends: 605 [2022-01-31 18:55:30,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6164 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=721, Invalid=48341, Unknown=0, NotChecked=0, Total=49062 [2022-01-31 18:55:30,354 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 226 mSDsluCounter, 9099 mSDsCounter, 0 mSdLazyCounter, 40075 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 9274 SdHoareTripleChecker+Invalid, 40399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 40075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:55:30,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 9274 Invalid, 40399 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [324 Valid, 40075 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-01-31 18:55:30,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-01-31 18:55:30,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 601. [2022-01-31 18:55:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 489 states have (on average 1.0061349693251533) internal successors, (492), 490 states have internal predecessors, (492), 56 states have call successors, (56), 56 states have call predecessors, (56), 55 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:55:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 603 transitions. [2022-01-31 18:55:30,630 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 603 transitions. Word has length 589 [2022-01-31 18:55:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:55:30,631 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 603 transitions. [2022-01-31 18:55:30,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 2.9026548672566372) internal successors, (328), 112 states have internal predecessors, (328), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 18:55:30,631 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 603 transitions. [2022-01-31 18:55:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2022-01-31 18:55:30,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:55:30,633 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:55:30,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 18:55:30,634 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:55:30,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:55:30,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1043316535, now seen corresponding path program 104 times [2022-01-31 18:55:30,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:55:30,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828163979] [2022-01-31 18:55:30,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:55:30,635 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:55:30,635 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:55:30,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:55:30,638 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:55:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:55:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 18:55:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 18:55:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 18:55:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 18:55:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 18:55:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 18:55:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 18:55:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 18:55:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 18:55:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 18:55:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 18:55:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 18:55:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 18:55:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 18:55:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 18:55:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 18:55:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 18:55:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 18:55:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 18:55:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 18:55:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 18:55:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 18:55:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 18:55:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 18:55:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 18:55:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 18:55:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 18:55:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 18:55:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 18:55:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 18:55:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 18:55:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 18:55:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 18:55:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 18:55:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-01-31 18:55:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-01-31 18:55:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-01-31 18:55:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-01-31 18:55:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-01-31 18:55:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-01-31 18:55:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-01-31 18:55:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-01-31 18:55:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2022-01-31 18:55:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2022-01-31 18:55:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2022-01-31 18:55:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2022-01-31 18:55:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-01-31 18:55:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-01-31 18:55:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2022-01-31 18:55:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2022-01-31 18:55:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2022-01-31 18:55:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2022-01-31 18:55:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2022-01-31 18:55:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:55:33,457 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:55:33,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828163979] [2022-01-31 18:55:33,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1828163979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:55:33,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:55:33,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-01-31 18:55:33,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396891030] [2022-01-31 18:55:33,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:55:33,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-01-31 18:55:33,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:55:33,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-01-31 18:55:33,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3085, Invalid=9347, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 18:55:33,461 INFO L87 Difference]: Start difference. First operand 601 states and 603 transitions. Second operand has 112 states, 112 states have (on average 2.955357142857143) internal successors, (331), 111 states have internal predecessors, (331), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:55:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:55:36,264 INFO L93 Difference]: Finished difference Result 1473 states and 1480 transitions. [2022-01-31 18:55:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-31 18:55:36,264 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.955357142857143) internal successors, (331), 111 states have internal predecessors, (331), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 597 [2022-01-31 18:55:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:55:36,266 INFO L225 Difference]: With dead ends: 1473 [2022-01-31 18:55:36,266 INFO L226 Difference]: Without dead ends: 611 [2022-01-31 18:55:36,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5990 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6110, Invalid=21280, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 18:55:36,269 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 864 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 3637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:55:36,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 972 Invalid, 3637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:55:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-01-31 18:55:36,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 604. [2022-01-31 18:55:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 492 states have (on average 1.0060975609756098) internal successors, (495), 493 states have internal predecessors, (495), 56 states have call successors, (56), 56 states have call predecessors, (56), 55 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:55:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 606 transitions. [2022-01-31 18:55:36,553 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 606 transitions. Word has length 597 [2022-01-31 18:55:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:55:36,554 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 606 transitions. [2022-01-31 18:55:36,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.955357142857143) internal successors, (331), 111 states have internal predecessors, (331), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:55:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 606 transitions. [2022-01-31 18:55:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-01-31 18:55:36,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:55:36,556 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:55:36,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 18:55:36,557 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:55:36,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:55:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1551994154, now seen corresponding path program 105 times [2022-01-31 18:55:36,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:55:36,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477822788] [2022-01-31 18:55:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:55:36,558 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:55:36,558 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:55:36,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:55:36,561 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:55:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:55:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:55:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:55:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:55:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:55:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:55:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:55:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:55:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:55:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:55:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:55:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:55:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:55:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:55:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:55:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:55:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:55:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:55:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:55:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:55:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:55:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:55:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:55:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:55:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:55:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:55:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:55:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:55:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:55:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:55:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 18:55:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 18:55:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 18:55:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 18:55:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 18:55:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 18:55:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 18:55:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 18:55:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 18:55:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-01-31 18:55:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-01-31 18:55:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-01-31 18:55:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-01-31 18:55:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-01-31 18:55:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-01-31 18:55:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-01-31 18:55:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-01-31 18:55:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-01-31 18:55:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-01-31 18:55:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-01-31 18:55:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-01-31 18:55:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-01-31 18:55:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-01-31 18:55:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-01-31 18:55:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:55:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:55:41,183 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:55:41,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477822788] [2022-01-31 18:55:41,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1477822788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:55:41,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:55:41,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-01-31 18:55:41,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39380055] [2022-01-31 18:55:41,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:55:41,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-01-31 18:55:41,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:55:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-01-31 18:55:41,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=13106, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 18:55:41,186 INFO L87 Difference]: Start difference. First operand 604 states and 606 transitions. Second operand has 116 states, 115 states have (on average 2.9043478260869566) internal successors, (334), 114 states have internal predecessors, (334), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:55:58,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:55:58,200 INFO L93 Difference]: Finished difference Result 618 states and 620 transitions. [2022-01-31 18:55:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-01-31 18:55:58,201 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 2.9043478260869566) internal successors, (334), 114 states have internal predecessors, (334), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 600 [2022-01-31 18:55:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:55:58,202 INFO L225 Difference]: With dead ends: 618 [2022-01-31 18:55:58,202 INFO L226 Difference]: Without dead ends: 616 [2022-01-31 18:55:58,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6388 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=734, Invalid=50116, Unknown=0, NotChecked=0, Total=50850 [2022-01-31 18:55:58,205 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 230 mSDsluCounter, 9375 mSDsCounter, 0 mSdLazyCounter, 41140 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 9553 SdHoareTripleChecker+Invalid, 41470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 41140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:55:58,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 9553 Invalid, 41470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [330 Valid, 41140 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-01-31 18:55:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-01-31 18:55:58,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 612. [2022-01-31 18:55:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 498 states have (on average 1.0060240963855422) internal successors, (501), 499 states have internal predecessors, (501), 57 states have call successors, (57), 57 states have call predecessors, (57), 56 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:55:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 614 transitions. [2022-01-31 18:55:58,505 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 614 transitions. Word has length 600 [2022-01-31 18:55:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:55:58,505 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 614 transitions. [2022-01-31 18:55:58,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 2.9043478260869566) internal successors, (334), 114 states have internal predecessors, (334), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 18:55:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 614 transitions. [2022-01-31 18:55:58,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2022-01-31 18:55:58,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:55:58,508 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:55:58,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 18:55:58,509 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:55:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:55:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1566918625, now seen corresponding path program 106 times [2022-01-31 18:55:58,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:55:58,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340748229] [2022-01-31 18:55:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:55:58,510 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:55:58,510 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:55:58,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:55:58,514 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:55:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:56:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 18:56:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 18:56:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 18:56:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 18:56:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 18:56:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 18:56:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 18:56:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 18:56:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 18:56:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 18:56:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 18:56:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 18:56:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 18:56:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 18:56:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 18:56:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 18:56:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 18:56:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 18:56:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 18:56:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 18:56:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 18:56:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 18:56:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 18:56:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 18:56:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 18:56:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 18:56:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 18:56:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 18:56:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 18:56:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 18:56:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 18:56:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 18:56:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 18:56:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 18:56:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 18:56:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 18:56:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 18:56:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 18:56:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-01-31 18:56:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-01-31 18:56:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-01-31 18:56:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-01-31 18:56:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-01-31 18:56:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-01-31 18:56:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-01-31 18:56:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-01-31 18:56:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-01-31 18:56:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-01-31 18:56:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-01-31 18:56:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-01-31 18:56:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-01-31 18:56:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-01-31 18:56:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-01-31 18:56:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-01-31 18:56:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:56:01,460 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:56:01,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340748229] [2022-01-31 18:56:01,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1340748229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:56:01,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:56:01,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-01-31 18:56:01,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590308871] [2022-01-31 18:56:01,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:56:01,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-31 18:56:01,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:56:01,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-31 18:56:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3197, Invalid=9685, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 18:56:01,463 INFO L87 Difference]: Start difference. First operand 612 states and 614 transitions. Second operand has 114 states, 114 states have (on average 2.956140350877193) internal successors, (337), 113 states have internal predecessors, (337), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:56:04,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:56:04,199 INFO L93 Difference]: Finished difference Result 1500 states and 1507 transitions. [2022-01-31 18:56:04,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 18:56:04,199 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.956140350877193) internal successors, (337), 113 states have internal predecessors, (337), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 608 [2022-01-31 18:56:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:56:04,201 INFO L225 Difference]: With dead ends: 1500 [2022-01-31 18:56:04,201 INFO L226 Difference]: Without dead ends: 622 [2022-01-31 18:56:04,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6211 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=6333, Invalid=22059, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 18:56:04,204 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 976 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 1026 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1026 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:56:04,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 802 Invalid, 3446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1026 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 18:56:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-01-31 18:56:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 615. [2022-01-31 18:56:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 501 states have (on average 1.0059880239520957) internal successors, (504), 502 states have internal predecessors, (504), 57 states have call successors, (57), 57 states have call predecessors, (57), 56 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:56:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 617 transitions. [2022-01-31 18:56:04,503 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 617 transitions. Word has length 608 [2022-01-31 18:56:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:56:04,503 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 617 transitions. [2022-01-31 18:56:04,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.956140350877193) internal successors, (337), 113 states have internal predecessors, (337), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:56:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 617 transitions. [2022-01-31 18:56:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-01-31 18:56:04,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:56:04,506 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:56:04,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 18:56:04,507 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:56:04,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:56:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2122570528, now seen corresponding path program 107 times [2022-01-31 18:56:04,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:56:04,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128522093] [2022-01-31 18:56:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:56:04,508 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:56:04,508 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:56:04,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:56:04,511 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:56:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:56:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:56:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:56:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:56:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:56:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:56:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:56:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:56:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:56:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:56:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:56:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:56:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:56:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:56:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:56:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:56:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:56:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:56:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:56:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:56:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:56:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:56:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:56:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:56:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:56:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:56:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:56:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 18:56:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 18:56:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 18:56:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 18:56:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 18:56:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 18:56:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 18:56:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 18:56:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 18:56:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 18:56:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 18:56:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 18:56:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 18:56:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 18:56:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 18:56:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 18:56:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 18:56:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 18:56:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 18:56:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 18:56:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 18:56:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-01-31 18:56:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-01-31 18:56:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-01-31 18:56:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-01-31 18:56:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-01-31 18:56:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-01-31 18:56:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2022-01-31 18:56:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:56:09,237 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:56:09,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128522093] [2022-01-31 18:56:09,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1128522093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:56:09,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:56:09,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-01-31 18:56:09,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200420105] [2022-01-31 18:56:09,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:56:09,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-01-31 18:56:09,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:56:09,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-01-31 18:56:09,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=13568, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 18:56:09,239 INFO L87 Difference]: Start difference. First operand 615 states and 617 transitions. Second operand has 118 states, 117 states have (on average 2.905982905982906) internal successors, (340), 116 states have internal predecessors, (340), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:56:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:56:26,578 INFO L93 Difference]: Finished difference Result 629 states and 631 transitions. [2022-01-31 18:56:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-01-31 18:56:26,578 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 2.905982905982906) internal successors, (340), 116 states have internal predecessors, (340), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 611 [2022-01-31 18:56:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:56:26,579 INFO L225 Difference]: With dead ends: 629 [2022-01-31 18:56:26,579 INFO L226 Difference]: Without dead ends: 627 [2022-01-31 18:56:26,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6616 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=747, Invalid=51923, Unknown=0, NotChecked=0, Total=52670 [2022-01-31 18:56:26,582 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 240 mSDsluCounter, 9709 mSDsCounter, 0 mSdLazyCounter, 42388 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 9890 SdHoareTripleChecker+Invalid, 42729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 42388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:56:26,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 9890 Invalid, 42729 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [341 Valid, 42388 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-01-31 18:56:26,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-01-31 18:56:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 623. [2022-01-31 18:56:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 507 states have (on average 1.0059171597633136) internal successors, (510), 508 states have internal predecessors, (510), 58 states have call successors, (58), 58 states have call predecessors, (58), 57 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:56:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 625 transitions. [2022-01-31 18:56:26,879 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 625 transitions. Word has length 611 [2022-01-31 18:56:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:56:26,879 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 625 transitions. [2022-01-31 18:56:26,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 2.905982905982906) internal successors, (340), 116 states have internal predecessors, (340), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 18:56:26,880 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 625 transitions. [2022-01-31 18:56:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2022-01-31 18:56:26,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:56:26,882 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:56:26,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 18:56:26,883 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:56:26,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:56:26,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1367357033, now seen corresponding path program 108 times [2022-01-31 18:56:26,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:56:26,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409478419] [2022-01-31 18:56:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:56:26,884 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:56:26,884 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:56:26,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:56:26,888 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:56:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:56:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 18:56:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 18:56:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 18:56:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 18:56:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 18:56:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 18:56:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 18:56:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 18:56:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 18:56:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 18:56:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 18:56:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 18:56:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 18:56:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 18:56:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 18:56:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 18:56:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 18:56:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 18:56:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 18:56:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 18:56:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 18:56:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 18:56:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 18:56:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 18:56:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 18:56:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 18:56:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 18:56:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 18:56:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 18:56:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 18:56:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 18:56:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 18:56:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 18:56:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 18:56:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 18:56:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 18:56:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 18:56:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 18:56:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 18:56:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 18:56:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 18:56:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 18:56:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 18:56:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 18:56:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 18:56:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 18:56:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 18:56:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-01-31 18:56:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-01-31 18:56:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-01-31 18:56:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-01-31 18:56:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-01-31 18:56:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-01-31 18:56:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2022-01-31 18:56:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2022-01-31 18:56:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:56:29,881 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:56:29,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409478419] [2022-01-31 18:56:29,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [409478419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:56:29,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:56:29,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-01-31 18:56:29,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255751559] [2022-01-31 18:56:29,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:56:29,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-01-31 18:56:29,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:56:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-01-31 18:56:29,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3311, Invalid=10029, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 18:56:29,883 INFO L87 Difference]: Start difference. First operand 623 states and 625 transitions. Second operand has 116 states, 116 states have (on average 2.956896551724138) internal successors, (343), 115 states have internal predecessors, (343), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:56:32,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:56:32,785 INFO L93 Difference]: Finished difference Result 1527 states and 1534 transitions. [2022-01-31 18:56:32,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-31 18:56:32,786 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.956896551724138) internal successors, (343), 115 states have internal predecessors, (343), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 619 [2022-01-31 18:56:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:56:32,787 INFO L225 Difference]: With dead ends: 1527 [2022-01-31 18:56:32,787 INFO L226 Difference]: Without dead ends: 633 [2022-01-31 18:56:32,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6436 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6560, Invalid=22852, Unknown=0, NotChecked=0, Total=29412 [2022-01-31 18:56:32,790 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1020 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 1076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 3808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1076 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:56:32,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 977 Invalid, 3808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1076 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 18:56:32,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-01-31 18:56:33,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 626. [2022-01-31 18:56:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 510 states have (on average 1.0058823529411764) internal successors, (513), 511 states have internal predecessors, (513), 58 states have call successors, (58), 58 states have call predecessors, (58), 57 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:56:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 628 transitions. [2022-01-31 18:56:33,092 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 628 transitions. Word has length 619 [2022-01-31 18:56:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:56:33,092 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 628 transitions. [2022-01-31 18:56:33,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.956896551724138) internal successors, (343), 115 states have internal predecessors, (343), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:56:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 628 transitions. [2022-01-31 18:56:33,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-01-31 18:56:33,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:56:33,095 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:56:33,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 18:56:33,095 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:56:33,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:56:33,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1799674056, now seen corresponding path program 109 times [2022-01-31 18:56:33,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:56:33,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655360948] [2022-01-31 18:56:33,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:56:33,096 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:56:33,096 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:56:33,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:56:33,100 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:56:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:56:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:56:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:56:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:56:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:56:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:56:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:56:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:56:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:56:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:56:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:56:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:56:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:56:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:56:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:56:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:56:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:56:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:56:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:56:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:56:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:56:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:56:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:56:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:56:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:56:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:56:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 18:56:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 18:56:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 18:56:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 18:56:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 18:56:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 18:56:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 18:56:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 18:56:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 18:56:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 18:56:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 18:56:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 18:56:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 18:56:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 18:56:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 18:56:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 18:56:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 18:56:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 18:56:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 18:56:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 18:56:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-01-31 18:56:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-01-31 18:56:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-01-31 18:56:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-01-31 18:56:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-01-31 18:56:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-01-31 18:56:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-01-31 18:56:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-01-31 18:56:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-01-31 18:56:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-01-31 18:56:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:56:37,950 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:56:37,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655360948] [2022-01-31 18:56:37,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [655360948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:56:37,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:56:37,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-01-31 18:56:37,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901020091] [2022-01-31 18:56:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:56:37,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-01-31 18:56:37,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:56:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-01-31 18:56:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=14038, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 18:56:37,952 INFO L87 Difference]: Start difference. First operand 626 states and 628 transitions. Second operand has 120 states, 119 states have (on average 2.907563025210084) internal successors, (346), 118 states have internal predecessors, (346), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:56:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:56:56,009 INFO L93 Difference]: Finished difference Result 640 states and 642 transitions. [2022-01-31 18:56:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-01-31 18:56:56,009 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 2.907563025210084) internal successors, (346), 118 states have internal predecessors, (346), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 622 [2022-01-31 18:56:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:56:56,011 INFO L225 Difference]: With dead ends: 640 [2022-01-31 18:56:56,011 INFO L226 Difference]: Without dead ends: 638 [2022-01-31 18:56:56,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6848 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=760, Invalid=53762, Unknown=0, NotChecked=0, Total=54522 [2022-01-31 18:56:56,013 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 244 mSDsluCounter, 10057 mSDsCounter, 0 mSdLazyCounter, 44119 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 10241 SdHoareTripleChecker+Invalid, 44466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 44119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:56:56,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 10241 Invalid, 44466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [347 Valid, 44119 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-01-31 18:56:56,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-01-31 18:56:56,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 634. [2022-01-31 18:56:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 516 states have (on average 1.005813953488372) internal successors, (519), 517 states have internal predecessors, (519), 59 states have call successors, (59), 59 states have call predecessors, (59), 58 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:56:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 636 transitions. [2022-01-31 18:56:56,329 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 636 transitions. Word has length 622 [2022-01-31 18:56:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:56:56,329 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 636 transitions. [2022-01-31 18:56:56,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 2.907563025210084) internal successors, (346), 118 states have internal predecessors, (346), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 18:56:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 636 transitions. [2022-01-31 18:56:56,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2022-01-31 18:56:56,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:56:56,332 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:56:56,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 18:56:56,332 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:56:56,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:56:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1826425873, now seen corresponding path program 110 times [2022-01-31 18:56:56,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:56:56,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978449331] [2022-01-31 18:56:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:56:56,334 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:56:56,334 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:56:56,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:56:56,337 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:56:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:56:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:56:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:56:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:56:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:56:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:56:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:56:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:56:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:56:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:56:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:56:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:56:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:56:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:56:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:56:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:56:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:56:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:56:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:56:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:56:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:56:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:56:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:56:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:56:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:56:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:56:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 18:56:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 18:56:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 18:56:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 18:56:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 18:56:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 18:56:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 18:56:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 18:56:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 18:56:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 18:56:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 18:56:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 18:56:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 18:56:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 18:56:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 18:56:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 18:56:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 18:56:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 18:56:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 18:56:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 18:56:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-01-31 18:56:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-01-31 18:56:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-01-31 18:56:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-01-31 18:56:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-01-31 18:56:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-01-31 18:56:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-01-31 18:56:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-01-31 18:56:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-01-31 18:56:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-01-31 18:56:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-01-31 18:56:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:56:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:56:59,412 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:56:59,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978449331] [2022-01-31 18:56:59,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [978449331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:56:59,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:56:59,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-01-31 18:56:59,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597851422] [2022-01-31 18:56:59,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:56:59,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-01-31 18:56:59,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:56:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-01-31 18:56:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3427, Invalid=10379, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 18:56:59,415 INFO L87 Difference]: Start difference. First operand 634 states and 636 transitions. Second operand has 118 states, 118 states have (on average 2.957627118644068) internal successors, (349), 117 states have internal predecessors, (349), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:57:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:57:02,439 INFO L93 Difference]: Finished difference Result 1554 states and 1561 transitions. [2022-01-31 18:57:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-31 18:57:02,439 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.957627118644068) internal successors, (349), 117 states have internal predecessors, (349), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 630 [2022-01-31 18:57:02,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:57:02,441 INFO L225 Difference]: With dead ends: 1554 [2022-01-31 18:57:02,441 INFO L226 Difference]: Without dead ends: 644 [2022-01-31 18:57:02,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6665 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=6791, Invalid=23659, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 18:57:02,443 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 1564 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 1619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 3975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1619 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:57:02,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 765 Invalid, 3975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1619 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 18:57:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-01-31 18:57:02,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 637. [2022-01-31 18:57:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 519 states have (on average 1.0057803468208093) internal successors, (522), 520 states have internal predecessors, (522), 59 states have call successors, (59), 59 states have call predecessors, (59), 58 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:57:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 639 transitions. [2022-01-31 18:57:02,751 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 639 transitions. Word has length 630 [2022-01-31 18:57:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:57:02,751 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 639 transitions. [2022-01-31 18:57:02,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.957627118644068) internal successors, (349), 117 states have internal predecessors, (349), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:57:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 639 transitions. [2022-01-31 18:57:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2022-01-31 18:57:02,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:57:02,754 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:57:02,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 18:57:02,755 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:57:02,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:57:02,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1775531950, now seen corresponding path program 111 times [2022-01-31 18:57:02,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:57:02,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796668007] [2022-01-31 18:57:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:57:02,756 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:57:02,756 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:57:02,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:57:02,760 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:57:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:57:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:57:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:57:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:57:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:57:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:57:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:57:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:57:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:57:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:57:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:57:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:57:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:57:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:57:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:57:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:57:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:57:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:57:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:57:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:57:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:57:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:57:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:57:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:57:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:57:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:57:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:57:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:57:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 18:57:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 18:57:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 18:57:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 18:57:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 18:57:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 18:57:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 18:57:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 18:57:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 18:57:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 18:57:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 18:57:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 18:57:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 18:57:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 18:57:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 18:57:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 18:57:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 18:57:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 18:57:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 18:57:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 18:57:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 18:57:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 18:57:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 18:57:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 18:57:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 18:57:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-01-31 18:57:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2022-01-31 18:57:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2022-01-31 18:57:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2022-01-31 18:57:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:57:07,794 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:57:07,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796668007] [2022-01-31 18:57:07,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1796668007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:57:07,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:57:07,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-01-31 18:57:07,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43193354] [2022-01-31 18:57:07,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:57:07,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-01-31 18:57:07,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:57:07,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-01-31 18:57:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=14516, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 18:57:07,796 INFO L87 Difference]: Start difference. First operand 637 states and 639 transitions. Second operand has 122 states, 121 states have (on average 2.909090909090909) internal successors, (352), 120 states have internal predecessors, (352), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:57:26,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:57:26,509 INFO L93 Difference]: Finished difference Result 651 states and 653 transitions. [2022-01-31 18:57:26,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2022-01-31 18:57:26,510 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 2.909090909090909) internal successors, (352), 120 states have internal predecessors, (352), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 633 [2022-01-31 18:57:26,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:57:26,511 INFO L225 Difference]: With dead ends: 651 [2022-01-31 18:57:26,511 INFO L226 Difference]: Without dead ends: 649 [2022-01-31 18:57:26,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7084 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=773, Invalid=55633, Unknown=0, NotChecked=0, Total=56406 [2022-01-31 18:57:26,514 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 242 mSDsluCounter, 10467 mSDsCounter, 0 mSdLazyCounter, 46059 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 10654 SdHoareTripleChecker+Invalid, 46407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 46059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:57:26,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 10654 Invalid, 46407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [348 Valid, 46059 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2022-01-31 18:57:26,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-01-31 18:57:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 645. [2022-01-31 18:57:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 525 states have (on average 1.0057142857142858) internal successors, (528), 526 states have internal predecessors, (528), 60 states have call successors, (60), 60 states have call predecessors, (60), 59 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 18:57:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 647 transitions. [2022-01-31 18:57:26,831 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 647 transitions. Word has length 633 [2022-01-31 18:57:26,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:57:26,831 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 647 transitions. [2022-01-31 18:57:26,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 2.909090909090909) internal successors, (352), 120 states have internal predecessors, (352), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 18:57:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 647 transitions. [2022-01-31 18:57:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2022-01-31 18:57:26,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:57:26,834 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:57:26,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 18:57:26,834 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:57:26,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:57:26,835 INFO L85 PathProgramCache]: Analyzing trace with hash -109613467, now seen corresponding path program 112 times [2022-01-31 18:57:26,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:57:26,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121466581] [2022-01-31 18:57:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:57:26,836 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:57:26,836 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:57:26,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:57:26,839 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:57:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:57:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 18:57:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 18:57:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 18:57:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 18:57:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 18:57:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 18:57:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 18:57:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 18:57:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 18:57:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 18:57:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 18:57:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 18:57:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 18:57:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 18:57:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 18:57:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 18:57:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 18:57:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 18:57:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 18:57:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 18:57:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 18:57:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 18:57:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 18:57:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 18:57:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 18:57:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 18:57:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 18:57:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 18:57:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 18:57:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 18:57:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 18:57:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 18:57:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 18:57:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 18:57:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 18:57:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 18:57:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 18:57:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 18:57:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 18:57:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 18:57:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 18:57:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 18:57:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 18:57:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 18:57:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 18:57:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 18:57:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 18:57:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 18:57:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 18:57:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 18:57:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-01-31 18:57:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:30,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-01-31 18:57:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:30,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-01-31 18:57:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:30,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2022-01-31 18:57:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:30,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2022-01-31 18:57:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:30,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2022-01-31 18:57:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2022-01-31 18:57:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:57:30,009 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:57:30,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121466581] [2022-01-31 18:57:30,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1121466581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:57:30,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:57:30,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-01-31 18:57:30,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851973286] [2022-01-31 18:57:30,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:57:30,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-01-31 18:57:30,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:57:30,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-01-31 18:57:30,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3545, Invalid=10735, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 18:57:30,013 INFO L87 Difference]: Start difference. First operand 645 states and 647 transitions. Second operand has 120 states, 120 states have (on average 2.9583333333333335) internal successors, (355), 119 states have internal predecessors, (355), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:57:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:57:33,336 INFO L93 Difference]: Finished difference Result 1581 states and 1588 transitions. [2022-01-31 18:57:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 18:57:33,336 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.9583333333333335) internal successors, (355), 119 states have internal predecessors, (355), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 641 [2022-01-31 18:57:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:57:33,338 INFO L225 Difference]: With dead ends: 1581 [2022-01-31 18:57:33,338 INFO L226 Difference]: Without dead ends: 655 [2022-01-31 18:57:33,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6898 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7026, Invalid=24480, Unknown=0, NotChecked=0, Total=31506 [2022-01-31 18:57:33,340 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 1048 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 3555 mSolverCounterSat, 1101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 4656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1101 IncrementalHoareTripleChecker+Valid, 3555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:57:33,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 992 Invalid, 4656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1101 Valid, 3555 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:57:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-01-31 18:57:33,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 648. [2022-01-31 18:57:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 528 states have (on average 1.0056818181818181) internal successors, (531), 529 states have internal predecessors, (531), 60 states have call successors, (60), 60 states have call predecessors, (60), 59 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 18:57:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 650 transitions. [2022-01-31 18:57:33,666 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 650 transitions. Word has length 641 [2022-01-31 18:57:33,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:57:33,666 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 650 transitions. [2022-01-31 18:57:33,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.9583333333333335) internal successors, (355), 119 states have internal predecessors, (355), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:57:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 650 transitions. [2022-01-31 18:57:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2022-01-31 18:57:33,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:57:33,679 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:57:33,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 18:57:33,680 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:57:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:57:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1599106374, now seen corresponding path program 113 times [2022-01-31 18:57:33,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:57:33,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211586169] [2022-01-31 18:57:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:57:33,681 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:57:33,681 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:57:33,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:57:33,685 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:57:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:57:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:57:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:57:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:57:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:57:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:57:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:57:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:57:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:57:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:57:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:57:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:57:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:57:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:57:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:57:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:57:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:57:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:57:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:57:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:57:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:57:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:57:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:57:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:57:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:57:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:57:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 18:57:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 18:57:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 18:57:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 18:57:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 18:57:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 18:57:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 18:57:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 18:57:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 18:57:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 18:57:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 18:57:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-01-31 18:57:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-01-31 18:57:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-01-31 18:57:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-01-31 18:57:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-01-31 18:57:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-01-31 18:57:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-01-31 18:57:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-01-31 18:57:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-01-31 18:57:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-01-31 18:57:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-01-31 18:57:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-01-31 18:57:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-01-31 18:57:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-01-31 18:57:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-01-31 18:57:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-01-31 18:57:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-01-31 18:57:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-01-31 18:57:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-01-31 18:57:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-01-31 18:57:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2022-01-31 18:57:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:57:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:57:38,906 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:57:38,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211586169] [2022-01-31 18:57:38,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1211586169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:57:38,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:57:38,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-01-31 18:57:38,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738587218] [2022-01-31 18:57:38,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:57:38,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-01-31 18:57:38,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:57:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-01-31 18:57:38,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=15002, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 18:57:38,909 INFO L87 Difference]: Start difference. First operand 648 states and 650 transitions. Second operand has 124 states, 123 states have (on average 2.910569105691057) internal successors, (358), 122 states have internal predecessors, (358), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:57:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:57:58,119 INFO L93 Difference]: Finished difference Result 662 states and 664 transitions. [2022-01-31 18:57:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-01-31 18:57:58,119 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 2.910569105691057) internal successors, (358), 122 states have internal predecessors, (358), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 644 [2022-01-31 18:57:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:57:58,120 INFO L225 Difference]: With dead ends: 662 [2022-01-31 18:57:58,121 INFO L226 Difference]: Without dead ends: 660 [2022-01-31 18:57:58,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7324 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=786, Invalid=57536, Unknown=0, NotChecked=0, Total=58322 [2022-01-31 18:57:58,124 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 252 mSDsluCounter, 10702 mSDsCounter, 0 mSdLazyCounter, 46781 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 10892 SdHoareTripleChecker+Invalid, 47140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 46781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:57:58,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 10892 Invalid, 47140 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [359 Valid, 46781 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-01-31 18:57:58,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-01-31 18:57:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 656. [2022-01-31 18:57:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 534 states have (on average 1.0056179775280898) internal successors, (537), 535 states have internal predecessors, (537), 61 states have call successors, (61), 61 states have call predecessors, (61), 60 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 18:57:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 658 transitions. [2022-01-31 18:57:58,461 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 658 transitions. Word has length 644 [2022-01-31 18:57:58,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:57:58,461 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 658 transitions. [2022-01-31 18:57:58,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 2.910569105691057) internal successors, (358), 122 states have internal predecessors, (358), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 18:57:58,462 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 658 transitions. [2022-01-31 18:57:58,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2022-01-31 18:57:58,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:57:58,465 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:57:58,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 18:57:58,465 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:57:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:57:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash -892318723, now seen corresponding path program 114 times [2022-01-31 18:57:58,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:57:58,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044633193] [2022-01-31 18:57:58,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:57:58,466 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:57:58,466 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:57:58,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:57:58,470 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:57:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:58:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 18:58:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 18:58:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 18:58:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 18:58:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 18:58:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 18:58:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 18:58:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 18:58:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 18:58:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 18:58:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 18:58:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 18:58:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 18:58:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 18:58:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 18:58:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 18:58:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 18:58:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 18:58:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 18:58:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 18:58:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 18:58:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 18:58:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 18:58:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 18:58:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 18:58:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 18:58:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 18:58:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 18:58:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 18:58:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 18:58:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 18:58:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 18:58:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 18:58:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 18:58:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 18:58:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 18:58:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-01-31 18:58:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-01-31 18:58:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-01-31 18:58:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-01-31 18:58:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-01-31 18:58:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-01-31 18:58:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-01-31 18:58:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-01-31 18:58:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-01-31 18:58:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-01-31 18:58:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-01-31 18:58:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-01-31 18:58:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-01-31 18:58:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-01-31 18:58:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-01-31 18:58:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-01-31 18:58:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-01-31 18:58:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-01-31 18:58:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-01-31 18:58:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-01-31 18:58:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2022-01-31 18:58:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2022-01-31 18:58:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:58:01,761 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:58:01,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044633193] [2022-01-31 18:58:01,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1044633193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:58:01,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:58:01,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-01-31 18:58:01,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67379254] [2022-01-31 18:58:01,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:58:01,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-01-31 18:58:01,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:58:01,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-01-31 18:58:01,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3665, Invalid=11097, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 18:58:01,763 INFO L87 Difference]: Start difference. First operand 656 states and 658 transitions. Second operand has 122 states, 122 states have (on average 2.959016393442623) internal successors, (361), 121 states have internal predecessors, (361), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 18:58:05,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:58:05,172 INFO L93 Difference]: Finished difference Result 1608 states and 1615 transitions. [2022-01-31 18:58:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-31 18:58:05,172 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.959016393442623) internal successors, (361), 121 states have internal predecessors, (361), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 652 [2022-01-31 18:58:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:58:05,174 INFO L225 Difference]: With dead ends: 1608 [2022-01-31 18:58:05,174 INFO L226 Difference]: Without dead ends: 666 [2022-01-31 18:58:05,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7135 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7265, Invalid=25315, Unknown=0, NotChecked=0, Total=32580 [2022-01-31 18:58:05,176 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 1172 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 3970 mSolverCounterSat, 1232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 5202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1232 IncrementalHoareTripleChecker+Valid, 3970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:58:05,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 1149 Invalid, 5202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1232 Valid, 3970 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 18:58:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-01-31 18:58:05,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 659. [2022-01-31 18:58:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 537 states have (on average 1.005586592178771) internal successors, (540), 538 states have internal predecessors, (540), 61 states have call successors, (61), 61 states have call predecessors, (61), 60 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 18:58:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 661 transitions. [2022-01-31 18:58:05,506 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 661 transitions. Word has length 652 [2022-01-31 18:58:05,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:58:05,507 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 661 transitions. [2022-01-31 18:58:05,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.959016393442623) internal successors, (361), 121 states have internal predecessors, (361), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 18:58:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 661 transitions. [2022-01-31 18:58:05,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2022-01-31 18:58:05,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:58:05,510 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:58:05,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 18:58:05,510 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:58:05,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:58:05,510 INFO L85 PathProgramCache]: Analyzing trace with hash -751901060, now seen corresponding path program 115 times [2022-01-31 18:58:05,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:58:05,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934806342] [2022-01-31 18:58:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:58:05,512 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:58:05,512 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:58:05,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:58:05,516 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:58:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:58:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:58:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:58:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:58:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:58:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:58:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:58:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:58:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:58:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:58:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:58:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:58:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:58:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:58:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:58:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:58:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:58:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:58:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:58:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:58:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:58:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:58:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:58:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:58:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:58:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:58:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:58:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:58:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 18:58:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 18:58:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 18:58:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 18:58:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 18:58:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 18:58:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 18:58:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 18:58:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 18:58:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 18:58:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-01-31 18:58:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-01-31 18:58:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-01-31 18:58:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-01-31 18:58:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-01-31 18:58:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-01-31 18:58:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-01-31 18:58:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-01-31 18:58:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-01-31 18:58:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-01-31 18:58:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-01-31 18:58:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2022-01-31 18:58:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2022-01-31 18:58:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2022-01-31 18:58:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2022-01-31 18:58:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2022-01-31 18:58:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2022-01-31 18:58:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2022-01-31 18:58:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2022-01-31 18:58:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2022-01-31 18:58:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2022-01-31 18:58:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:58:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:58:10,827 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:58:10,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934806342] [2022-01-31 18:58:10,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1934806342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:58:10,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:58:10,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126 [2022-01-31 18:58:10,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350530488] [2022-01-31 18:58:10,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:58:10,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-01-31 18:58:10,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:58:10,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-01-31 18:58:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=15496, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 18:58:10,829 INFO L87 Difference]: Start difference. First operand 659 states and 661 transitions. Second operand has 126 states, 125 states have (on average 2.912) internal successors, (364), 124 states have internal predecessors, (364), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59)