/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/reducercommutativity/sum10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 18:40:03,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 18:40:03,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 18:40:03,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 18:40:03,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 18:40:03,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 18:40:03,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 18:40:03,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 18:40:03,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 18:40:03,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 18:40:03,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 18:40:03,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 18:40:03,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 18:40:03,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 18:40:03,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 18:40:03,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 18:40:03,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 18:40:03,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 18:40:03,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 18:40:03,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 18:40:03,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 18:40:03,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 18:40:03,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 18:40:03,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 18:40:03,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 18:40:03,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 18:40:03,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 18:40:03,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 18:40:03,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 18:40:03,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 18:40:03,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 18:40:03,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 18:40:03,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 18:40:03,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 18:40:03,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 18:40:03,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 18:40:03,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 18:40:03,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 18:40:03,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 18:40:03,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 18:40:03,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 18:40:03,207 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 18:40:03,214 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 18:40:03,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 18:40:03,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 18:40:03,216 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 18:40:03,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 18:40:03,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 18:40:03,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 18:40:03,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 18:40:03,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 18:40:03,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 18:40:03,216 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 18:40:03,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 18:40:03,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 18:40:03,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 18:40:03,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 18:40:03,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 18:40:03,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 18:40:03,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 18:40:03,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:40:03,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 18:40:03,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 18:40:03,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 18:40:03,218 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 18:40:03,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 18:40:03,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 18:40:03,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 18:40:03,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 18:40:03,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 18:40:03,489 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 18:40:03,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum10-1.i [2022-01-31 18:40:03,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140d2889c/f0aa3a6682084f398df6f3023b30b609/FLAG567d4dc5e [2022-01-31 18:40:03,891 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 18:40:03,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum10-1.i [2022-01-31 18:40:03,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140d2889c/f0aa3a6682084f398df6f3023b30b609/FLAG567d4dc5e [2022-01-31 18:40:03,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140d2889c/f0aa3a6682084f398df6f3023b30b609 [2022-01-31 18:40:03,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 18:40:03,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 18:40:03,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 18:40:03,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 18:40:03,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 18:40:03,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:40:03" (1/1) ... [2022-01-31 18:40:03,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4908a005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:03, skipping insertion in model container [2022-01-31 18:40:03,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:40:03" (1/1) ... [2022-01-31 18:40:03,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 18:40:03,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 18:40:04,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum10-1.i[1277,1290] [2022-01-31 18:40:04,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:40:04,092 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 18:40:04,118 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum10-1.i[1277,1290] [2022-01-31 18:40:04,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:40:04,130 INFO L208 MainTranslator]: Completed translation [2022-01-31 18:40:04,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:04 WrapperNode [2022-01-31 18:40:04,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 18:40:04,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 18:40:04,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 18:40:04,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 18:40:04,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:04" (1/1) ... [2022-01-31 18:40:04,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:04" (1/1) ... [2022-01-31 18:40:04,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:04" (1/1) ... [2022-01-31 18:40:04,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:04" (1/1) ... [2022-01-31 18:40:04,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:04" (1/1) ... [2022-01-31 18:40:04,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:04" (1/1) ... [2022-01-31 18:40:04,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:04" (1/1) ... [2022-01-31 18:40:04,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 18:40:04,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 18:40:04,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 18:40:04,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 18:40:04,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:04" (1/1) ... [2022-01-31 18:40:04,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:40:04,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 18:40:04,195 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 18:40:04,206 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 18:40:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 18:40:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 18:40:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 18:40:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-01-31 18:40:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 18:40:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 18:40:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 18:40:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 18:40:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 18:40:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 18:40:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 18:40:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 18:40:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-01-31 18:40:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 18:40:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 18:40:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 18:40:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 18:40:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 18:40:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 18:40:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 18:40:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 18:40:04,288 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 18:40:04,289 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 18:40:04,496 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 18:40:04,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 18:40:04,501 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 18:40:04,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:40:04 BoogieIcfgContainer [2022-01-31 18:40:04,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 18:40:04,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 18:40:04,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 18:40:04,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 18:40:04,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 06:40:03" (1/3) ... [2022-01-31 18:40:04,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0021ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:40:04, skipping insertion in model container [2022-01-31 18:40:04,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:40:04" (2/3) ... [2022-01-31 18:40:04,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0021ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:40:04, skipping insertion in model container [2022-01-31 18:40:04,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:40:04" (3/3) ... [2022-01-31 18:40:04,530 INFO L111 eAbstractionObserver]: Analyzing ICFG sum10-1.i [2022-01-31 18:40:04,534 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 18:40:04,535 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 18:40:04,595 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 18:40:04,600 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 18:40:04,600 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 18:40:04,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:40:04,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 18:40:04,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:04,620 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:04,620 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:04,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1514933818, now seen corresponding path program 1 times [2022-01-31 18:40:04,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:04,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034896160] [2022-01-31 18:40:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:04,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:04,672 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:04,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:04,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 18:40:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 18:40:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:40:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 18:40:04,803 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:04,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034896160] [2022-01-31 18:40:04,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2034896160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:04,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:04,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 18:40:04,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701459942] [2022-01-31 18:40:04,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:04,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 18:40:04,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 18:40:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 18:40:04,836 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:04,875 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2022-01-31 18:40:04,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 18:40:04,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 18:40:04,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:04,883 INFO L225 Difference]: With dead ends: 54 [2022-01-31 18:40:04,883 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 18:40:04,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 18:40:04,889 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:04,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 18:40:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-31 18:40:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-01-31 18:40:04,930 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2022-01-31 18:40:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:04,930 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-01-31 18:40:04,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-01-31 18:40:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 18:40:04,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:04,933 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:04,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 18:40:04,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:04,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:04,934 INFO L85 PathProgramCache]: Analyzing trace with hash -649748416, now seen corresponding path program 1 times [2022-01-31 18:40:04,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:04,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873735556] [2022-01-31 18:40:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:04,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:04,938 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 18:40:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 18:40:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:40:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:40:05,032 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:05,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873735556] [2022-01-31 18:40:05,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [873735556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:05,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:05,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:40:05,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80181504] [2022-01-31 18:40:05,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:05,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:40:05,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:40:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:40:05,035 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:05,150 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2022-01-31 18:40:05,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:40:05,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 18:40:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:05,153 INFO L225 Difference]: With dead ends: 48 [2022-01-31 18:40:05,153 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 18:40:05,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:40:05,155 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:05,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:05,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 18:40:05,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-01-31 18:40:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 18:40:05,164 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 32 [2022-01-31 18:40:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:05,164 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 18:40:05,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 18:40:05,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 18:40:05,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:05,166 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:05,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 18:40:05,166 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:05,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:05,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1359785280, now seen corresponding path program 1 times [2022-01-31 18:40:05,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:05,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684724031] [2022-01-31 18:40:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:05,186 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:05,186 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:05,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:05,188 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 18:40:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 18:40:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 18:40:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-31 18:40:05,328 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:05,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684724031] [2022-01-31 18:40:05,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1684724031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:05,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:05,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:40:05,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009368973] [2022-01-31 18:40:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:05,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:40:05,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:40:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:40:05,331 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:05,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:05,424 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-01-31 18:40:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:40:05,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-01-31 18:40:05,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:05,426 INFO L225 Difference]: With dead ends: 50 [2022-01-31 18:40:05,427 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 18:40:05,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:40:05,430 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:05,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 37 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:05,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 18:40:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-01-31 18:40:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-31 18:40:05,437 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 40 [2022-01-31 18:40:05,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:05,437 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-31 18:40:05,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-31 18:40:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 18:40:05,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:05,438 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:05,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 18:40:05,439 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash 582810658, now seen corresponding path program 2 times [2022-01-31 18:40:05,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:05,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476995320] [2022-01-31 18:40:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:05,448 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:05,448 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:05,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:05,454 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:40:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 18:40:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 18:40:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 18:40:05,604 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:05,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476995320] [2022-01-31 18:40:05,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1476995320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:05,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:05,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:40:05,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291860116] [2022-01-31 18:40:05,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:05,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:40:05,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:40:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:40:05,609 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:05,696 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2022-01-31 18:40:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:40:05,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-01-31 18:40:05,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:05,699 INFO L225 Difference]: With dead ends: 51 [2022-01-31 18:40:05,699 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 18:40:05,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:40:05,711 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:05,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 37 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 18:40:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-31 18:40:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-01-31 18:40:05,720 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 42 [2022-01-31 18:40:05,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:05,720 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-01-31 18:40:05,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-01-31 18:40:05,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 18:40:05,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:05,726 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:05,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 18:40:05,726 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1957141696, now seen corresponding path program 3 times [2022-01-31 18:40:05,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:05,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446285965] [2022-01-31 18:40:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:05,730 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:05,730 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:05,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:05,732 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:40:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:40:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:40:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:40:05,840 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:05,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446285965] [2022-01-31 18:40:05,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1446285965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:05,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:05,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 18:40:05,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643907982] [2022-01-31 18:40:05,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:05,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 18:40:05,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 18:40:05,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:40:05,843 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:05,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:05,895 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-01-31 18:40:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 18:40:05,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-01-31 18:40:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:05,899 INFO L225 Difference]: With dead ends: 49 [2022-01-31 18:40:05,899 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 18:40:05,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:40:05,902 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:05,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 32 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:05,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 18:40:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-01-31 18:40:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-31 18:40:05,918 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2022-01-31 18:40:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:05,921 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-31 18:40:05,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-31 18:40:05,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 18:40:05,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:05,926 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:05,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 18:40:05,926 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:05,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash -173524546, now seen corresponding path program 1 times [2022-01-31 18:40:05,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:05,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096459384] [2022-01-31 18:40:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:05,931 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:05,931 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:05,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:05,933 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:40:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:40:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:40:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:40:06,076 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:06,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096459384] [2022-01-31 18:40:06,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2096459384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:06,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:06,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:40:06,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662442537] [2022-01-31 18:40:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:06,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:40:06,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:40:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:40:06,079 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:06,143 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-01-31 18:40:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:40:06,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-01-31 18:40:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:06,145 INFO L225 Difference]: With dead ends: 51 [2022-01-31 18:40:06,145 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 18:40:06,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:40:06,148 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:06,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 32 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 18:40:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-01-31 18:40:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-01-31 18:40:06,160 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2022-01-31 18:40:06,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:06,161 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-01-31 18:40:06,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:06,162 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-01-31 18:40:06,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-31 18:40:06,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:06,164 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:06,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 18:40:06,164 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:06,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:06,165 INFO L85 PathProgramCache]: Analyzing trace with hash 190605500, now seen corresponding path program 2 times [2022-01-31 18:40:06,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:06,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122581056] [2022-01-31 18:40:06,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:06,173 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:06,173 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:06,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:06,175 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:40:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:40:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:40:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:40:06,272 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:06,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122581056] [2022-01-31 18:40:06,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [122581056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:06,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:06,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:40:06,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018662752] [2022-01-31 18:40:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:06,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:40:06,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:40:06,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:40:06,282 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:06,352 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2022-01-31 18:40:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:40:06,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-01-31 18:40:06,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:06,354 INFO L225 Difference]: With dead ends: 62 [2022-01-31 18:40:06,354 INFO L226 Difference]: Without dead ends: 38 [2022-01-31 18:40:06,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:40:06,356 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:06,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 32 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:06,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-31 18:40:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-01-31 18:40:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-01-31 18:40:06,366 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2022-01-31 18:40:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:06,366 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-01-31 18:40:06,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-01-31 18:40:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 18:40:06,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:06,369 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:06,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 18:40:06,369 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash -417788130, now seen corresponding path program 3 times [2022-01-31 18:40:06,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:06,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508744999] [2022-01-31 18:40:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:06,374 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:06,374 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:06,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:06,375 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 18:40:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 18:40:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:40:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:40:06,484 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:06,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508744999] [2022-01-31 18:40:06,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [508744999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:06,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:06,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:40:06,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195165532] [2022-01-31 18:40:06,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:06,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:40:06,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:06,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:40:06,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:40:06,486 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:06,606 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2022-01-31 18:40:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:40:06,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2022-01-31 18:40:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:06,608 INFO L225 Difference]: With dead ends: 64 [2022-01-31 18:40:06,608 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 18:40:06,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:40:06,612 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:06,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 42 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 18:40:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-31 18:40:06,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-01-31 18:40:06,624 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2022-01-31 18:40:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:06,624 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-01-31 18:40:06,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-01-31 18:40:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 18:40:06,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:06,625 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:06,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 18:40:06,626 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:06,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:06,626 INFO L85 PathProgramCache]: Analyzing trace with hash -968514304, now seen corresponding path program 4 times [2022-01-31 18:40:06,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:06,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667872050] [2022-01-31 18:40:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:06,628 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:06,629 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:06,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:06,630 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 18:40:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:40:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:40:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:40:06,721 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:06,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667872050] [2022-01-31 18:40:06,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1667872050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:06,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:06,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:40:06,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111063295] [2022-01-31 18:40:06,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:06,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:40:06,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:40:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:40:06,723 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:06,828 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-01-31 18:40:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:40:06,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-01-31 18:40:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:06,830 INFO L225 Difference]: With dead ends: 66 [2022-01-31 18:40:06,830 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 18:40:06,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:40:06,832 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:06,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 37 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 18:40:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-01-31 18:40:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-01-31 18:40:06,845 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 56 [2022-01-31 18:40:06,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:06,845 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-01-31 18:40:06,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:06,845 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-01-31 18:40:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 18:40:06,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:06,846 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:06,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 18:40:06,846 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:06,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1935390110, now seen corresponding path program 5 times [2022-01-31 18:40:06,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:06,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846535084] [2022-01-31 18:40:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:06,848 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:06,848 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:06,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:06,850 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:40:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:40:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:40:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:40:06,926 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:06,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846535084] [2022-01-31 18:40:06,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1846535084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:06,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:06,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 18:40:06,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16342428] [2022-01-31 18:40:06,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:06,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 18:40:06,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:06,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 18:40:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:40:06,928 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:07,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:07,022 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2022-01-31 18:40:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 18:40:07,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2022-01-31 18:40:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:07,023 INFO L225 Difference]: With dead ends: 68 [2022-01-31 18:40:07,023 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 18:40:07,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:40:07,024 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:07,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 32 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:07,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 18:40:07,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-01-31 18:40:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-01-31 18:40:07,031 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 58 [2022-01-31 18:40:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:07,031 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-01-31 18:40:07,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-01-31 18:40:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 18:40:07,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:07,032 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:07,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 18:40:07,033 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:07,033 INFO L85 PathProgramCache]: Analyzing trace with hash 904863556, now seen corresponding path program 6 times [2022-01-31 18:40:07,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:07,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880650162] [2022-01-31 18:40:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:07,036 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:07,036 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:07,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:07,037 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 18:40:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:40:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:40:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:40:07,148 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:07,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880650162] [2022-01-31 18:40:07,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1880650162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:07,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:07,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:40:07,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541023249] [2022-01-31 18:40:07,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:07,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:40:07,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:07,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:40:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:40:07,150 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:07,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:07,265 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2022-01-31 18:40:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:40:07,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-01-31 18:40:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:07,266 INFO L225 Difference]: With dead ends: 70 [2022-01-31 18:40:07,267 INFO L226 Difference]: Without dead ends: 46 [2022-01-31 18:40:07,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:40:07,268 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:07,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 42 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:07,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-31 18:40:07,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-01-31 18:40:07,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-01-31 18:40:07,282 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 60 [2022-01-31 18:40:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:07,282 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-01-31 18:40:07,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-01-31 18:40:07,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 18:40:07,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:07,283 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:07,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 18:40:07,283 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:07,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1210563674, now seen corresponding path program 7 times [2022-01-31 18:40:07,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:07,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426732785] [2022-01-31 18:40:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:07,286 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:07,286 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:07,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:07,288 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 18:40:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 18:40:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:40:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:40:07,411 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:07,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426732785] [2022-01-31 18:40:07,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [426732785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:07,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:07,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:40:07,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467368688] [2022-01-31 18:40:07,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:07,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:40:07,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:40:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:40:07,413 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:07,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:07,579 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2022-01-31 18:40:07,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 18:40:07,580 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2022-01-31 18:40:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:07,581 INFO L225 Difference]: With dead ends: 72 [2022-01-31 18:40:07,581 INFO L226 Difference]: Without dead ends: 48 [2022-01-31 18:40:07,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:40:07,582 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:07,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 52 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-31 18:40:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-01-31 18:40:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-01-31 18:40:07,587 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 62 [2022-01-31 18:40:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:07,588 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-01-31 18:40:07,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-01-31 18:40:07,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 18:40:07,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:07,588 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:07,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 18:40:07,589 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1678366600, now seen corresponding path program 8 times [2022-01-31 18:40:07,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:07,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078351335] [2022-01-31 18:40:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:07,591 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:07,591 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:07,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:07,593 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:40:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:40:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:40:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:40:07,714 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:07,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078351335] [2022-01-31 18:40:07,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2078351335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:07,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:07,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:40:07,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671262687] [2022-01-31 18:40:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:07,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:40:07,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:07,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:40:07,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:40:07,716 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:07,882 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-01-31 18:40:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:40:07,882 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-01-31 18:40:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:07,883 INFO L225 Difference]: With dead ends: 74 [2022-01-31 18:40:07,883 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 18:40:07,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:40:07,885 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 37 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:07,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 37 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:07,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 18:40:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-01-31 18:40:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-01-31 18:40:07,891 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 64 [2022-01-31 18:40:07,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:07,891 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-01-31 18:40:07,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-01-31 18:40:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 18:40:07,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:07,892 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:07,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 18:40:07,892 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:07,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:07,892 INFO L85 PathProgramCache]: Analyzing trace with hash -903480598, now seen corresponding path program 9 times [2022-01-31 18:40:07,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:07,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346766435] [2022-01-31 18:40:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:07,897 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:07,897 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:07,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:07,899 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:40:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:40:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:40:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:40:08,031 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:08,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346766435] [2022-01-31 18:40:08,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [346766435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:08,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:08,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 18:40:08,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216663464] [2022-01-31 18:40:08,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:08,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 18:40:08,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 18:40:08,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:40:08,033 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:08,204 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2022-01-31 18:40:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 18:40:08,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2022-01-31 18:40:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:08,206 INFO L225 Difference]: With dead ends: 75 [2022-01-31 18:40:08,206 INFO L226 Difference]: Without dead ends: 51 [2022-01-31 18:40:08,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:40:08,207 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:08,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 42 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:08,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-31 18:40:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-01-31 18:40:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-01-31 18:40:08,213 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 66 [2022-01-31 18:40:08,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:08,213 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-01-31 18:40:08,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:08,213 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-01-31 18:40:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 18:40:08,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:08,214 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:08,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 18:40:08,214 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:08,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash 432459212, now seen corresponding path program 10 times [2022-01-31 18:40:08,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:08,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219723220] [2022-01-31 18:40:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:08,216 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:08,216 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:08,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:08,218 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:40:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:40:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:40:08,276 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:08,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219723220] [2022-01-31 18:40:08,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1219723220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:08,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:08,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:40:08,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730902633] [2022-01-31 18:40:08,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:08,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:40:08,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:08,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:40:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:40:08,278 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:08,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:08,329 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2022-01-31 18:40:08,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:40:08,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2022-01-31 18:40:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:08,330 INFO L225 Difference]: With dead ends: 77 [2022-01-31 18:40:08,330 INFO L226 Difference]: Without dead ends: 54 [2022-01-31 18:40:08,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:40:08,333 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:08,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 32 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:08,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-31 18:40:08,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2022-01-31 18:40:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:08,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-01-31 18:40:08,339 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 68 [2022-01-31 18:40:08,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:08,339 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-01-31 18:40:08,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:08,339 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-01-31 18:40:08,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 18:40:08,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:08,340 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:08,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 18:40:08,340 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:08,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash 956369770, now seen corresponding path program 11 times [2022-01-31 18:40:08,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:08,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252911287] [2022-01-31 18:40:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:08,343 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:08,344 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:08,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:08,345 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:40:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:40:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-31 18:40:08,413 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:08,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252911287] [2022-01-31 18:40:08,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [252911287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:08,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:08,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:40:08,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617582703] [2022-01-31 18:40:08,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:08,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:40:08,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:40:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:40:08,415 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:08,483 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2022-01-31 18:40:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:40:08,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-01-31 18:40:08,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:08,488 INFO L225 Difference]: With dead ends: 81 [2022-01-31 18:40:08,488 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 18:40:08,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:40:08,489 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:08,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 37 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 18:40:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-01-31 18:40:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:08,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-01-31 18:40:08,493 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 74 [2022-01-31 18:40:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:08,493 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-01-31 18:40:08,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:08,510 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-01-31 18:40:08,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 18:40:08,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:08,511 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:08,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 18:40:08,511 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1813030264, now seen corresponding path program 12 times [2022-01-31 18:40:08,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:08,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006954429] [2022-01-31 18:40:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:08,514 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:08,514 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:08,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:08,515 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:40:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:40:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 18:40:08,598 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:08,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006954429] [2022-01-31 18:40:08,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2006954429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:08,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:08,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:40:08,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014831142] [2022-01-31 18:40:08,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:08,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:40:08,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:08,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:40:08,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:40:08,601 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:08,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:08,673 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2022-01-31 18:40:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:40:08,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 80 [2022-01-31 18:40:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:08,674 INFO L225 Difference]: With dead ends: 85 [2022-01-31 18:40:08,674 INFO L226 Difference]: Without dead ends: 58 [2022-01-31 18:40:08,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:40:08,674 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:08,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 32 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:08,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-31 18:40:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-01-31 18:40:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:08,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-01-31 18:40:08,679 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 80 [2022-01-31 18:40:08,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:08,680 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-01-31 18:40:08,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:08,680 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-01-31 18:40:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-31 18:40:08,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:08,681 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:08,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 18:40:08,681 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:08,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:08,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1081205978, now seen corresponding path program 13 times [2022-01-31 18:40:08,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:08,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881437819] [2022-01-31 18:40:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:08,683 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:08,683 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:08,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:08,684 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:40:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:40:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-31 18:40:08,769 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:08,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881437819] [2022-01-31 18:40:08,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1881437819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:08,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:08,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 18:40:08,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444116503] [2022-01-31 18:40:08,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:08,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 18:40:08,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:08,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 18:40:08,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:40:08,771 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:08,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:08,886 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2022-01-31 18:40:08,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 18:40:08,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-01-31 18:40:08,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:08,887 INFO L225 Difference]: With dead ends: 89 [2022-01-31 18:40:08,887 INFO L226 Difference]: Without dead ends: 60 [2022-01-31 18:40:08,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:40:08,888 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:08,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 52 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-31 18:40:08,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-01-31 18:40:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:08,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-01-31 18:40:08,894 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 86 [2022-01-31 18:40:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:08,894 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-01-31 18:40:08,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-01-31 18:40:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-31 18:40:08,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:08,895 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:08,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 18:40:08,895 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1349627204, now seen corresponding path program 14 times [2022-01-31 18:40:08,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:08,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44584804] [2022-01-31 18:40:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:08,897 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:08,897 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:08,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:08,899 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:40:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:40:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-31 18:40:08,983 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:08,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44584804] [2022-01-31 18:40:08,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [44584804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:08,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:08,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:40:08,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997961051] [2022-01-31 18:40:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:08,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:40:08,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:40:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:40:08,985 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:09,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:09,101 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2022-01-31 18:40:09,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:40:09,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 92 [2022-01-31 18:40:09,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:09,104 INFO L225 Difference]: With dead ends: 93 [2022-01-31 18:40:09,104 INFO L226 Difference]: Without dead ends: 62 [2022-01-31 18:40:09,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:40:09,105 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:09,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 42 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-31 18:40:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2022-01-31 18:40:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-01-31 18:40:09,111 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2022-01-31 18:40:09,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:09,111 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-01-31 18:40:09,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-01-31 18:40:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-31 18:40:09,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:09,112 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:09,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 18:40:09,112 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:09,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1866043166, now seen corresponding path program 15 times [2022-01-31 18:40:09,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:09,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742555166] [2022-01-31 18:40:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:09,116 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:09,116 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:09,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:09,117 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:40:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:40:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,237 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-31 18:40:09,237 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:09,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742555166] [2022-01-31 18:40:09,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1742555166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:09,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:09,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:40:09,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769085498] [2022-01-31 18:40:09,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:09,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:40:09,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:09,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:40:09,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:40:09,239 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:09,378 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2022-01-31 18:40:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 18:40:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 98 [2022-01-31 18:40:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:09,380 INFO L225 Difference]: With dead ends: 97 [2022-01-31 18:40:09,380 INFO L226 Difference]: Without dead ends: 64 [2022-01-31 18:40:09,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:40:09,381 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:09,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 47 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:09,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-31 18:40:09,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-01-31 18:40:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-01-31 18:40:09,387 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2022-01-31 18:40:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:09,387 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-01-31 18:40:09,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-01-31 18:40:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-31 18:40:09,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:09,388 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:09,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 18:40:09,389 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:09,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1236220416, now seen corresponding path program 16 times [2022-01-31 18:40:09,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:09,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933309003] [2022-01-31 18:40:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:09,402 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:09,402 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:09,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:09,403 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:40:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:40:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-31 18:40:09,526 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:09,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933309003] [2022-01-31 18:40:09,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1933309003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:09,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:09,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:40:09,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824668119] [2022-01-31 18:40:09,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:09,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:40:09,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:09,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:40:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:40:09,528 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:09,692 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2022-01-31 18:40:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:40:09,692 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 104 [2022-01-31 18:40:09,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:09,693 INFO L225 Difference]: With dead ends: 101 [2022-01-31 18:40:09,693 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 18:40:09,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:40:09,694 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 37 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:09,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 47 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 18:40:09,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-01-31 18:40:09,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-01-31 18:40:09,700 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2022-01-31 18:40:09,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:09,701 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-01-31 18:40:09,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-01-31 18:40:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:40:09,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:09,702 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:09,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 18:40:09,702 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:09,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:09,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1737683810, now seen corresponding path program 17 times [2022-01-31 18:40:09,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:09,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492250132] [2022-01-31 18:40:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:09,704 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:09,704 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:09,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:09,706 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:40:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:40:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-31 18:40:09,854 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:09,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492250132] [2022-01-31 18:40:09,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [492250132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:09,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:09,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 18:40:09,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563233109] [2022-01-31 18:40:09,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:09,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 18:40:09,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:09,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 18:40:09,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:40:09,856 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:10,012 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2022-01-31 18:40:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 18:40:10,014 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 110 [2022-01-31 18:40:10,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:10,015 INFO L225 Difference]: With dead ends: 104 [2022-01-31 18:40:10,015 INFO L226 Difference]: Without dead ends: 67 [2022-01-31 18:40:10,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:40:10,016 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:10,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 42 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:10,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-31 18:40:10,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-01-31 18:40:10,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-01-31 18:40:10,023 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 110 [2022-01-31 18:40:10,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:10,024 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-01-31 18:40:10,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,024 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-01-31 18:40:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-31 18:40:10,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:10,025 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:10,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 18:40:10,025 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:10,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:10,025 INFO L85 PathProgramCache]: Analyzing trace with hash -435182404, now seen corresponding path program 18 times [2022-01-31 18:40:10,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:10,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161949482] [2022-01-31 18:40:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:10,027 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:10,027 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:10,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:10,029 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:40:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:40:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-31 18:40:10,095 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:10,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161949482] [2022-01-31 18:40:10,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1161949482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:10,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:10,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:40:10,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821073832] [2022-01-31 18:40:10,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:10,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:40:10,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:10,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:40:10,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:40:10,097 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:10,151 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2022-01-31 18:40:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:40:10,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 116 [2022-01-31 18:40:10,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:10,153 INFO L225 Difference]: With dead ends: 101 [2022-01-31 18:40:10,153 INFO L226 Difference]: Without dead ends: 70 [2022-01-31 18:40:10,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:40:10,153 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:10,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 32 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:10,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-31 18:40:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2022-01-31 18:40:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-01-31 18:40:10,161 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 116 [2022-01-31 18:40:10,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:10,161 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-01-31 18:40:10,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,161 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-01-31 18:40:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-31 18:40:10,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:10,162 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:10,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 18:40:10,162 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash -478622662, now seen corresponding path program 19 times [2022-01-31 18:40:10,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:10,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845612399] [2022-01-31 18:40:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:10,165 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:10,165 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:10,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:10,167 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:40:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:40:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-31 18:40:10,257 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:10,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845612399] [2022-01-31 18:40:10,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [845612399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:10,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:10,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:40:10,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66430558] [2022-01-31 18:40:10,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:10,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:40:10,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:40:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:40:10,258 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:10,322 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2022-01-31 18:40:10,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:40:10,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 118 [2022-01-31 18:40:10,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:10,323 INFO L225 Difference]: With dead ends: 103 [2022-01-31 18:40:10,323 INFO L226 Difference]: Without dead ends: 72 [2022-01-31 18:40:10,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:40:10,324 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:10,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 32 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:10,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-31 18:40:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-01-31 18:40:10,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-01-31 18:40:10,332 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 118 [2022-01-31 18:40:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:10,332 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-01-31 18:40:10,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-01-31 18:40:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-31 18:40:10,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:10,333 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:10,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 18:40:10,333 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash 724962360, now seen corresponding path program 20 times [2022-01-31 18:40:10,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:10,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610673139] [2022-01-31 18:40:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:10,336 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:10,336 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:10,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:10,337 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:40:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:40:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-31 18:40:10,418 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:10,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610673139] [2022-01-31 18:40:10,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [610673139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:10,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:10,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:40:10,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780611636] [2022-01-31 18:40:10,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:10,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:40:10,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:40:10,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:40:10,420 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:10,499 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2022-01-31 18:40:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:40:10,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-01-31 18:40:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:10,501 INFO L225 Difference]: With dead ends: 105 [2022-01-31 18:40:10,501 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 18:40:10,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:40:10,501 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:10,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 32 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 18:40:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-01-31 18:40:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2022-01-31 18:40:10,509 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2022-01-31 18:40:10,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:10,509 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2022-01-31 18:40:10,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2022-01-31 18:40:10,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-31 18:40:10,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:10,510 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:10,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 18:40:10,510 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:10,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2023965878, now seen corresponding path program 21 times [2022-01-31 18:40:10,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:10,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545830980] [2022-01-31 18:40:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:10,513 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:10,513 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:10,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:10,514 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:40:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:40:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-31 18:40:10,602 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:10,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545830980] [2022-01-31 18:40:10,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1545830980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:10,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:10,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 18:40:10,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701548091] [2022-01-31 18:40:10,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:10,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 18:40:10,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 18:40:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:40:10,603 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:10,705 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2022-01-31 18:40:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 18:40:10,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 122 [2022-01-31 18:40:10,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:10,706 INFO L225 Difference]: With dead ends: 107 [2022-01-31 18:40:10,706 INFO L226 Difference]: Without dead ends: 76 [2022-01-31 18:40:10,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:40:10,707 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:10,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 42 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-31 18:40:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-01-31 18:40:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-01-31 18:40:10,714 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2022-01-31 18:40:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:10,715 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-01-31 18:40:10,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-01-31 18:40:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-31 18:40:10,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:10,716 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:10,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 18:40:10,716 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:10,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:10,717 INFO L85 PathProgramCache]: Analyzing trace with hash 530863540, now seen corresponding path program 22 times [2022-01-31 18:40:10,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:10,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039611203] [2022-01-31 18:40:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:10,718 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:10,718 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:10,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:10,720 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:40:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:40:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-31 18:40:10,813 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:10,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039611203] [2022-01-31 18:40:10,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2039611203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:10,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:10,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:40:10,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666679877] [2022-01-31 18:40:10,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:10,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:40:10,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:10,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:40:10,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:40:10,814 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:10,943 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2022-01-31 18:40:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:40:10,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-01-31 18:40:10,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:10,945 INFO L225 Difference]: With dead ends: 109 [2022-01-31 18:40:10,945 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 18:40:10,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:40:10,946 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:10,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 52 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:10,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 18:40:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2022-01-31 18:40:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-01-31 18:40:10,953 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2022-01-31 18:40:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:10,954 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-01-31 18:40:10,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:10,954 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-01-31 18:40:10,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-31 18:40:10,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:10,955 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:10,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 18:40:10,955 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:10,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:10,956 INFO L85 PathProgramCache]: Analyzing trace with hash 178593586, now seen corresponding path program 23 times [2022-01-31 18:40:10,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:10,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700996708] [2022-01-31 18:40:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:10,957 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:10,957 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:10,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:10,959 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:11,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:11,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:11,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:40:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:11,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:40:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-31 18:40:11,080 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:11,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700996708] [2022-01-31 18:40:11,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1700996708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:11,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:11,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:40:11,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154801152] [2022-01-31 18:40:11,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:11,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:40:11,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:11,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:40:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:40:11,081 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:11,200 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2022-01-31 18:40:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 18:40:11,201 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 126 [2022-01-31 18:40:11,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:11,201 INFO L225 Difference]: With dead ends: 111 [2022-01-31 18:40:11,202 INFO L226 Difference]: Without dead ends: 80 [2022-01-31 18:40:11,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:40:11,202 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:11,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 37 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:40:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-31 18:40:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-01-31 18:40:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2022-01-31 18:40:11,210 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2022-01-31 18:40:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:11,211 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2022-01-31 18:40:11,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2022-01-31 18:40:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-31 18:40:11,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:11,212 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:11,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 18:40:11,212 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:11,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:11,212 INFO L85 PathProgramCache]: Analyzing trace with hash 949584176, now seen corresponding path program 24 times [2022-01-31 18:40:11,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:11,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600948043] [2022-01-31 18:40:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:11,214 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:11,214 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:11,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:11,216 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:11,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:11,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:40:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:11,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:40:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-31 18:40:11,324 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:11,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600948043] [2022-01-31 18:40:11,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [600948043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:11,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:11,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:40:11,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804521631] [2022-01-31 18:40:11,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:11,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:40:11,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:40:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:40:11,325 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:11,479 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2022-01-31 18:40:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:40:11,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 128 [2022-01-31 18:40:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:11,481 INFO L225 Difference]: With dead ends: 112 [2022-01-31 18:40:11,481 INFO L226 Difference]: Without dead ends: 81 [2022-01-31 18:40:11,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:40:11,483 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:11,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 42 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:40:11,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-31 18:40:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-01-31 18:40:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-01-31 18:40:11,490 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2022-01-31 18:40:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:11,491 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-01-31 18:40:11,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:40:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-01-31 18:40:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-31 18:40:11,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:11,493 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:40:11,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 18:40:11,494 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:11,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1157801042, now seen corresponding path program 25 times [2022-01-31 18:40:11,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:11,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275598165] [2022-01-31 18:40:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:11,496 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:11,496 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:11,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:11,498 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:40:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat