/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 19:53:33,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 19:53:33,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 19:53:33,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 19:53:33,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 19:53:33,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 19:53:33,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 19:53:33,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 19:53:33,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 19:53:33,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 19:53:33,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 19:53:33,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 19:53:33,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 19:53:33,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 19:53:33,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 19:53:33,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 19:53:33,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 19:53:33,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 19:53:33,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 19:53:33,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 19:53:33,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 19:53:33,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 19:53:33,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 19:53:33,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 19:53:33,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 19:53:33,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 19:53:33,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 19:53:33,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 19:53:33,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 19:53:33,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 19:53:33,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 19:53:33,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 19:53:33,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 19:53:33,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 19:53:33,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 19:53:33,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 19:53:33,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 19:53:33,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 19:53:33,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 19:53:33,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 19:53:33,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 19:53:33,328 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 19:53:33,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 19:53:33,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 19:53:33,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 19:53:33,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 19:53:33,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 19:53:33,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 19:53:33,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 19:53:33,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 19:53:33,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 19:53:33,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 19:53:33,340 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 19:53:33,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 19:53:33,340 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 19:53:33,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 19:53:33,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 19:53:33,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 19:53:33,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 19:53:33,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 19:53:33,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:53:33,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 19:53:33,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 19:53:33,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 19:53:33,342 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 19:53:33,342 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 19:53:33,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 19:53:33,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 19:53:33,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 19:53:33,566 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 19:53:33,571 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 19:53:33,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2022-01-31 19:53:33,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da77ce48b/ab1a6a3aa3994e488cec6a19f1b333b3/FLAG336df00e7 [2022-01-31 19:53:33,972 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 19:53:33,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2022-01-31 19:53:33,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da77ce48b/ab1a6a3aa3994e488cec6a19f1b333b3/FLAG336df00e7 [2022-01-31 19:53:33,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da77ce48b/ab1a6a3aa3994e488cec6a19f1b333b3 [2022-01-31 19:53:33,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 19:53:33,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 19:53:33,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 19:53:33,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 19:53:33,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 19:53:33,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:53:33" (1/1) ... [2022-01-31 19:53:33,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7041b942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:33, skipping insertion in model container [2022-01-31 19:53:33,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:53:33" (1/1) ... [2022-01-31 19:53:34,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 19:53:34,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 19:53:34,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c[423,436] [2022-01-31 19:53:34,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:53:34,154 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 19:53:34,171 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c[423,436] [2022-01-31 19:53:34,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:53:34,195 INFO L208 MainTranslator]: Completed translation [2022-01-31 19:53:34,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:34 WrapperNode [2022-01-31 19:53:34,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 19:53:34,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 19:53:34,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 19:53:34,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 19:53:34,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:34" (1/1) ... [2022-01-31 19:53:34,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:34" (1/1) ... [2022-01-31 19:53:34,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:34" (1/1) ... [2022-01-31 19:53:34,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:34" (1/1) ... [2022-01-31 19:53:34,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:34" (1/1) ... [2022-01-31 19:53:34,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:34" (1/1) ... [2022-01-31 19:53:34,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:34" (1/1) ... [2022-01-31 19:53:34,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 19:53:34,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 19:53:34,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 19:53:34,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 19:53:34,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:34" (1/1) ... [2022-01-31 19:53:34,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:53:34,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 19:53:34,255 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 19:53:34,261 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 19:53:34,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 19:53:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 19:53:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 19:53:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 19:53:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 19:53:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 19:53:34,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 19:53:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 19:53:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 19:53:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 19:53:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 19:53:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 19:53:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 19:53:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 19:53:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 19:53:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 19:53:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 19:53:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 19:53:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 19:53:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 19:53:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 19:53:34,336 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 19:53:34,337 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 19:53:34,460 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 19:53:34,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 19:53:34,465 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 19:53:34,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:53:34 BoogieIcfgContainer [2022-01-31 19:53:34,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 19:53:34,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 19:53:34,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 19:53:34,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 19:53:34,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:53:33" (1/3) ... [2022-01-31 19:53:34,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268c15e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:53:34, skipping insertion in model container [2022-01-31 19:53:34,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:34" (2/3) ... [2022-01-31 19:53:34,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268c15e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:53:34, skipping insertion in model container [2022-01-31 19:53:34,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:53:34" (3/3) ... [2022-01-31 19:53:34,486 INFO L111 eAbstractionObserver]: Analyzing ICFG array_min_and_copy_shift_sum_add.c [2022-01-31 19:53:34,490 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 19:53:34,490 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 19:53:34,516 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 19:53:34,537 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 19:53:34,537 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 19:53:34,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:53:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 19:53:34,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:34,558 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:34,559 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:34,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1713270924, now seen corresponding path program 1 times [2022-01-31 19:53:34,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:34,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603808726] [2022-01-31 19:53:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:34,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:34,622 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:34,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:34,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 19:53:34,777 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:34,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603808726] [2022-01-31 19:53:34,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1603808726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:34,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:34,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 19:53:34,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450053927] [2022-01-31 19:53:34,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:34,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 19:53:34,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:34,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 19:53:34,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:53:34,807 INFO L87 Difference]: Start difference. First operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 19:53:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:34,875 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2022-01-31 19:53:34,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 19:53:34,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-01-31 19:53:34,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:34,882 INFO L225 Difference]: With dead ends: 69 [2022-01-31 19:53:34,883 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 19:53:34,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 19:53:34,888 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:34,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 43 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:53:34,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 19:53:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-31 19:53:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:53:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-01-31 19:53:34,920 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 27 [2022-01-31 19:53:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:34,921 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-01-31 19:53:34,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 19:53:34,921 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-01-31 19:53:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 19:53:34,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:34,923 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:34,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 19:53:34,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash -729649300, now seen corresponding path program 1 times [2022-01-31 19:53:34,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:34,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796176569] [2022-01-31 19:53:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:34,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:34,930 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 19:53:35,061 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:35,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796176569] [2022-01-31 19:53:35,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [796176569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:35,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:35,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 19:53:35,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031664456] [2022-01-31 19:53:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:35,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 19:53:35,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 19:53:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 19:53:35,063 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 19:53:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:35,178 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-01-31 19:53:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 19:53:35,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-01-31 19:53:35,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:35,179 INFO L225 Difference]: With dead ends: 37 [2022-01-31 19:53:35,179 INFO L226 Difference]: Without dead ends: 32 [2022-01-31 19:53:35,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 19:53:35,180 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:35,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 49 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:53:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-31 19:53:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-31 19:53:35,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:53:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-01-31 19:53:35,187 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 27 [2022-01-31 19:53:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:35,188 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-01-31 19:53:35,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 19:53:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-01-31 19:53:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 19:53:35,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:35,189 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 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 19:53:35,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 19:53:35,189 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:35,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash -182907574, now seen corresponding path program 1 times [2022-01-31 19:53:35,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:35,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253847621] [2022-01-31 19:53:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:35,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:35,191 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 19:53:35,278 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:35,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253847621] [2022-01-31 19:53:35,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [253847621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:35,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:35,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 19:53:35,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164988518] [2022-01-31 19:53:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:35,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 19:53:35,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:35,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 19:53:35,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 19:53:35,287 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 19:53:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:35,385 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2022-01-31 19:53:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:53:35,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-01-31 19:53:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:35,387 INFO L225 Difference]: With dead ends: 56 [2022-01-31 19:53:35,387 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 19:53:35,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-31 19:53:35,388 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:35,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 40 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:53:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 19:53:35,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-01-31 19:53:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:53:35,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-01-31 19:53:35,394 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2022-01-31 19:53:35,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:35,394 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-01-31 19:53:35,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 19:53:35,395 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-01-31 19:53:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-31 19:53:35,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:35,396 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:35,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 19:53:35,396 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:35,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash 335597208, now seen corresponding path program 1 times [2022-01-31 19:53:35,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:35,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690499722] [2022-01-31 19:53:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:35,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:35,398 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 19:53:35,789 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:35,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690499722] [2022-01-31 19:53:35,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [690499722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:35,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:35,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 19:53:35,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781463854] [2022-01-31 19:53:35,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:35,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 19:53:35,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 19:53:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-31 19:53:35,791 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 19:53:36,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:36,124 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2022-01-31 19:53:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 19:53:36,125 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2022-01-31 19:53:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:36,126 INFO L225 Difference]: With dead ends: 60 [2022-01-31 19:53:36,126 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 19:53:36,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-01-31 19:53:36,128 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 83 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:36,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 61 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:53:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 19:53:36,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-01-31 19:53:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 8 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:53:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2022-01-31 19:53:36,137 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 41 [2022-01-31 19:53:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:36,138 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2022-01-31 19:53:36,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 19:53:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-01-31 19:53:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-31 19:53:36,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:36,139 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:36,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 19:53:36,139 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash -944266470, now seen corresponding path program 1 times [2022-01-31 19:53:36,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:36,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613435285] [2022-01-31 19:53:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:36,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:36,142 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 19:53:36,437 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:36,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613435285] [2022-01-31 19:53:36,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1613435285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:36,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:36,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 19:53:36,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589752348] [2022-01-31 19:53:36,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:36,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 19:53:36,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 19:53:36,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:53:36,439 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 19:53:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:36,760 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2022-01-31 19:53:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 19:53:36,760 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2022-01-31 19:53:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:36,762 INFO L225 Difference]: With dead ends: 74 [2022-01-31 19:53:36,762 INFO L226 Difference]: Without dead ends: 69 [2022-01-31 19:53:36,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-01-31 19:53:36,763 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 98 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:36,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 59 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:53:36,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-31 19:53:36,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2022-01-31 19:53:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 8 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:53:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2022-01-31 19:53:36,771 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 41 [2022-01-31 19:53:36,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:36,772 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2022-01-31 19:53:36,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 19:53:36,772 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-01-31 19:53:36,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-31 19:53:36,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:36,773 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:36,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 19:53:36,773 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:36,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:36,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1410154934, now seen corresponding path program 2 times [2022-01-31 19:53:36,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:36,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896458612] [2022-01-31 19:53:36,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:36,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:36,775 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:36,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:36,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:36,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:36,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 19:53:36,839 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:36,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896458612] [2022-01-31 19:53:36,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1896458612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:36,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:36,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 19:53:36,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107036320] [2022-01-31 19:53:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:36,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 19:53:36,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 19:53:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-31 19:53:36,841 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:53:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:36,966 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2022-01-31 19:53:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 19:53:36,967 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), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2022-01-31 19:53:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:36,969 INFO L225 Difference]: With dead ends: 86 [2022-01-31 19:53:36,969 INFO L226 Difference]: Without dead ends: 67 [2022-01-31 19:53:36,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-31 19:53:36,974 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 88 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:36,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 39 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:53:36,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-31 19:53:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2022-01-31 19:53:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 8 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:53:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2022-01-31 19:53:36,991 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 43 [2022-01-31 19:53:36,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:36,992 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2022-01-31 19:53:36,992 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), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:53:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2022-01-31 19:53:36,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-31 19:53:36,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:36,993 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 19:53:36,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 19:53:36,993 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:36,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1273666232, now seen corresponding path program 3 times [2022-01-31 19:53:36,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:36,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074849500] [2022-01-31 19:53:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:37,010 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:37,010 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:53:37,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:37,011 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:37,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:37,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 19:53:37,116 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:37,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074849500] [2022-01-31 19:53:37,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2074849500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:37,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:37,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 19:53:37,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230051224] [2022-01-31 19:53:37,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:37,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 19:53:37,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 19:53:37,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 19:53:37,118 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-31 19:53:37,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:37,257 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2022-01-31 19:53:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 19:53:37,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2022-01-31 19:53:37,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:37,261 INFO L225 Difference]: With dead ends: 63 [2022-01-31 19:53:37,261 INFO L226 Difference]: Without dead ends: 54 [2022-01-31 19:53:37,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:53:37,267 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 72 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:37,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 52 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:53:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-31 19:53:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2022-01-31 19:53:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 7 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:53:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-01-31 19:53:37,280 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 51 [2022-01-31 19:53:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:37,281 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-01-31 19:53:37,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-31 19:53:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-01-31 19:53:37,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 19:53:37,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:37,284 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:37,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 19:53:37,285 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:37,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:37,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2126656452, now seen corresponding path program 4 times [2022-01-31 19:53:37,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:37,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688808043] [2022-01-31 19:53:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:37,293 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:37,294 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:53:37,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:37,308 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:38,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:38,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:38,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 19:53:38,202 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:38,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688808043] [2022-01-31 19:53:38,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [688808043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:38,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:38,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 19:53:38,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976354004] [2022-01-31 19:53:38,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:38,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 19:53:38,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:38,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 19:53:38,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-31 19:53:38,204 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 28 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-31 19:53:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:39,858 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2022-01-31 19:53:39,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 19:53:39,859 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 55 [2022-01-31 19:53:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:39,859 INFO L225 Difference]: With dead ends: 80 [2022-01-31 19:53:39,860 INFO L226 Difference]: Without dead ends: 75 [2022-01-31 19:53:39,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=326, Invalid=2536, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:53:39,861 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 106 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:39,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 125 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:53:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-31 19:53:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2022-01-31 19:53:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 8 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:53:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2022-01-31 19:53:39,872 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 55 [2022-01-31 19:53:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:39,872 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2022-01-31 19:53:39,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 25 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-31 19:53:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2022-01-31 19:53:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 19:53:39,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:39,873 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 19:53:39,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 19:53:39,873 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:39,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:39,874 INFO L85 PathProgramCache]: Analyzing trace with hash 437712710, now seen corresponding path program 1 times [2022-01-31 19:53:39,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:39,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587519935] [2022-01-31 19:53:39,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:39,878 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:39,879 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:53:39,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:39,880 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:40,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:40,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:40,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 19:53:40,423 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:40,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587519935] [2022-01-31 19:53:40,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1587519935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:40,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:40,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 19:53:40,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594897498] [2022-01-31 19:53:40,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:40,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 19:53:40,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:40,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 19:53:40,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-01-31 19:53:40,425 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 20 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-31 19:53:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:41,704 INFO L93 Difference]: Finished difference Result 91 states and 111 transitions. [2022-01-31 19:53:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 19:53:41,705 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 20 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 55 [2022-01-31 19:53:41,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:41,705 INFO L225 Difference]: With dead ends: 91 [2022-01-31 19:53:41,705 INFO L226 Difference]: Without dead ends: 86 [2022-01-31 19:53:41,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=292, Invalid=1778, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:53:41,709 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 91 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:41,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 89 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:53:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-31 19:53:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 61. [2022-01-31 19:53:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 8 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:53:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2022-01-31 19:53:41,724 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 55 [2022-01-31 19:53:41,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:41,724 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2022-01-31 19:53:41,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 20 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-31 19:53:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2022-01-31 19:53:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 19:53:41,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:41,728 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 19:53:41,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 19:53:41,728 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash -782107450, now seen corresponding path program 2 times [2022-01-31 19:53:41,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:41,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737235001] [2022-01-31 19:53:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:41,732 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:41,732 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:53:41,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:41,734 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:42,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 19:53:42,393 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:42,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737235001] [2022-01-31 19:53:42,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1737235001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:42,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:42,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 19:53:42,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160594797] [2022-01-31 19:53:42,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:42,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 19:53:42,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 19:53:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-01-31 19:53:42,395 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-31 19:53:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:43,679 INFO L93 Difference]: Finished difference Result 110 states and 135 transitions. [2022-01-31 19:53:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 19:53:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 55 [2022-01-31 19:53:43,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:43,694 INFO L225 Difference]: With dead ends: 110 [2022-01-31 19:53:43,694 INFO L226 Difference]: Without dead ends: 105 [2022-01-31 19:53:43,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=305, Invalid=1951, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:53:43,695 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 96 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:43,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 82 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:53:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-31 19:53:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 65. [2022-01-31 19:53:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 states have internal predecessors, (66), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:53:43,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2022-01-31 19:53:43,716 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 55 [2022-01-31 19:53:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:43,717 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2022-01-31 19:53:43,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-31 19:53:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2022-01-31 19:53:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 19:53:43,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:43,717 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:43,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 19:53:43,718 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:43,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1823916104, now seen corresponding path program 2 times [2022-01-31 19:53:43,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:43,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764361396] [2022-01-31 19:53:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:43,722 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:43,723 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:53:43,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:43,724 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:44,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:44,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 19:53:44,491 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:44,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764361396] [2022-01-31 19:53:44,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [764361396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:44,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:44,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 19:53:44,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969102109] [2022-01-31 19:53:44,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:44,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 19:53:44,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:44,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 19:53:44,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:53:44,493 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 25 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-31 19:53:46,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:46,759 INFO L93 Difference]: Finished difference Result 140 states and 173 transitions. [2022-01-31 19:53:46,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 19:53:46,759 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 25 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 55 [2022-01-31 19:53:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:46,760 INFO L225 Difference]: With dead ends: 140 [2022-01-31 19:53:46,760 INFO L226 Difference]: Without dead ends: 134 [2022-01-31 19:53:46,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=642, Invalid=5058, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 19:53:46,763 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 119 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:46,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 110 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 19:53:46,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-01-31 19:53:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 65. [2022-01-31 19:53:46,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 states have internal predecessors, (67), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:53:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2022-01-31 19:53:46,783 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 55 [2022-01-31 19:53:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:46,784 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2022-01-31 19:53:46,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 25 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-31 19:53:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2022-01-31 19:53:46,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 19:53:46,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:46,785 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:53:46,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 19:53:46,785 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:46,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:46,785 INFO L85 PathProgramCache]: Analyzing trace with hash -208733214, now seen corresponding path program 5 times [2022-01-31 19:53:46,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:46,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626693970] [2022-01-31 19:53:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:46,789 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:46,789 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:53:46,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:46,790 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:46,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:46,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:46,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:46,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 19:53:46,868 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:46,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626693970] [2022-01-31 19:53:46,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1626693970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:46,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:46,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 19:53:46,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194251100] [2022-01-31 19:53:46,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:46,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 19:53:46,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:46,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 19:53:46,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-31 19:53:46,869 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-31 19:53:47,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:47,104 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2022-01-31 19:53:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 19:53:47,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 57 [2022-01-31 19:53:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:47,105 INFO L225 Difference]: With dead ends: 112 [2022-01-31 19:53:47,106 INFO L226 Difference]: Without dead ends: 87 [2022-01-31 19:53:47,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:53:47,106 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 117 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:47,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 44 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:53:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-01-31 19:53:47,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 72. [2022-01-31 19:53:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:53:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2022-01-31 19:53:47,122 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 57 [2022-01-31 19:53:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:47,122 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2022-01-31 19:53:47,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-31 19:53:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2022-01-31 19:53:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-31 19:53:47,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:47,123 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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, 1] [2022-01-31 19:53:47,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 19:53:47,123 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1024371084, now seen corresponding path program 6 times [2022-01-31 19:53:47,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:47,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756384467] [2022-01-31 19:53:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:47,127 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:47,127 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:53:47,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:47,127 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:47,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:47,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:47,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:53:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 19:53:47,199 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:47,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756384467] [2022-01-31 19:53:47,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [756384467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:47,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:47,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 19:53:47,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89030761] [2022-01-31 19:53:47,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:47,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 19:53:47,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:47,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 19:53:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-31 19:53:47,200 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 19:53:47,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:47,411 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2022-01-31 19:53:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 19:53:47,412 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), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 65 [2022-01-31 19:53:47,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:47,412 INFO L225 Difference]: With dead ends: 79 [2022-01-31 19:53:47,412 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 19:53:47,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-01-31 19:53:47,413 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 87 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:47,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 55 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:53:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 19:53:47,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2022-01-31 19:53:47,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 8 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:53:47,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2022-01-31 19:53:47,425 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 65 [2022-01-31 19:53:47,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:47,425 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2022-01-31 19:53:47,425 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), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 19:53:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2022-01-31 19:53:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 19:53:47,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:47,427 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 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] [2022-01-31 19:53:47,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 19:53:47,427 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:47,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash 11706096, now seen corresponding path program 7 times [2022-01-31 19:53:47,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:47,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244231341] [2022-01-31 19:53:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:47,429 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:47,430 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:53:47,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:47,430 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:48,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:48,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:48,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:48,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:53:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 19:53:48,524 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:48,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244231341] [2022-01-31 19:53:48,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [244231341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:48,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:48,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 19:53:48,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355576386] [2022-01-31 19:53:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:48,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 19:53:48,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:48,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 19:53:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:53:48,526 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 30 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 28 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:53:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:50,901 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2022-01-31 19:53:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 19:53:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 28 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2022-01-31 19:53:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:50,902 INFO L225 Difference]: With dead ends: 108 [2022-01-31 19:53:50,902 INFO L226 Difference]: Without dead ends: 103 [2022-01-31 19:53:50,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=466, Invalid=3694, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 19:53:50,904 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 106 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:50,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 111 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 19:53:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-31 19:53:50,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2022-01-31 19:53:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 71 states have internal predecessors, (89), 11 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:53:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2022-01-31 19:53:50,935 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 69 [2022-01-31 19:53:50,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:50,936 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2022-01-31 19:53:50,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 28 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:53:50,936 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2022-01-31 19:53:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 19:53:50,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:50,936 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 19:53:50,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 19:53:50,937 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1793732238, now seen corresponding path program 3 times [2022-01-31 19:53:50,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:50,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304108935] [2022-01-31 19:53:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:50,940 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:50,940 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:53:50,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:50,941 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:51,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:51,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:51,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:53:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 19:53:51,888 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:51,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304108935] [2022-01-31 19:53:51,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [304108935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:51,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:51,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 19:53:51,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280459631] [2022-01-31 19:53:51,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:51,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 19:53:51,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:51,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 19:53:51,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:53:51,889 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 30 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 28 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:53:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:54,121 INFO L93 Difference]: Finished difference Result 120 states and 149 transitions. [2022-01-31 19:53:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 19:53:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 28 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2022-01-31 19:53:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:54,122 INFO L225 Difference]: With dead ends: 120 [2022-01-31 19:53:54,123 INFO L226 Difference]: Without dead ends: 115 [2022-01-31 19:53:54,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=490, Invalid=3800, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 19:53:54,125 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 95 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:54,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 117 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 19:53:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-01-31 19:53:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 85. [2022-01-31 19:53:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 71 states have internal predecessors, (89), 11 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:53:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2022-01-31 19:53:54,161 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 69 [2022-01-31 19:53:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:54,162 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2022-01-31 19:53:54,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 28 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:53:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2022-01-31 19:53:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 19:53:54,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:54,162 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 19:53:54,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 19:53:54,162 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:54,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:54,163 INFO L85 PathProgramCache]: Analyzing trace with hash -60680462, now seen corresponding path program 4 times [2022-01-31 19:53:54,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:54,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960889334] [2022-01-31 19:53:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:54,177 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:54,178 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:53:54,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:54,179 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:53:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 19:53:55,091 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:55,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960889334] [2022-01-31 19:53:55,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1960889334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:55,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:55,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 19:53:55,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210261626] [2022-01-31 19:53:55,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:55,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 19:53:55,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:55,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 19:53:55,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:53:55,092 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 27 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:53:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:56,683 INFO L93 Difference]: Finished difference Result 122 states and 154 transitions. [2022-01-31 19:53:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 19:53:56,684 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 27 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2022-01-31 19:53:56,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:56,685 INFO L225 Difference]: With dead ends: 122 [2022-01-31 19:53:56,685 INFO L226 Difference]: Without dead ends: 101 [2022-01-31 19:53:56,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=351, Invalid=2729, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 19:53:56,686 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 97 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:56,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 102 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:53:56,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-31 19:53:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2022-01-31 19:53:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 76 states have (on average 1.263157894736842) internal successors, (96), 76 states have internal predecessors, (96), 12 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 19:53:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2022-01-31 19:53:56,717 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 69 [2022-01-31 19:53:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:56,717 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2022-01-31 19:53:56,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 27 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:53:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2022-01-31 19:53:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 19:53:56,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:56,718 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 19:53:56,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 19:53:56,718 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1866118796, now seen corresponding path program 5 times [2022-01-31 19:53:56,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:56,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242805115] [2022-01-31 19:53:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:56,723 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:56,723 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:53:56,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:56,724 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:57,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:53:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:57,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:53:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:53:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:53:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:53:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:57,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:53:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:53:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 19:53:57,691 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:53:57,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242805115] [2022-01-31 19:53:57,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [242805115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:53:57,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:53:57,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 19:53:57,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984755823] [2022-01-31 19:53:57,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:53:57,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 19:53:57,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:53:57,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 19:53:57,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:53:57,693 INFO L87 Difference]: Start difference. First operand 91 states and 118 transitions. Second operand has 31 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 29 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:53:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:53:59,897 INFO L93 Difference]: Finished difference Result 128 states and 161 transitions. [2022-01-31 19:53:59,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 19:53:59,898 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 29 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2022-01-31 19:53:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:53:59,899 INFO L225 Difference]: With dead ends: 128 [2022-01-31 19:53:59,899 INFO L226 Difference]: Without dead ends: 123 [2022-01-31 19:53:59,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=487, Invalid=3935, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:53:59,901 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 95 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:53:59,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 120 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 19:53:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-01-31 19:53:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 91. [2022-01-31 19:53:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 76 states have (on average 1.263157894736842) internal successors, (96), 76 states have internal predecessors, (96), 12 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 19:53:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2022-01-31 19:53:59,933 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 69 [2022-01-31 19:53:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:53:59,933 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2022-01-31 19:53:59,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 29 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:53:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2022-01-31 19:53:59,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 19:53:59,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:53:59,934 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 19:53:59,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 19:53:59,934 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:53:59,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:53:59,934 INFO L85 PathProgramCache]: Analyzing trace with hash -885687182, now seen corresponding path program 6 times [2022-01-31 19:53:59,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:53:59,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704048298] [2022-01-31 19:53:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:53:59,938 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:53:59,939 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:53:59,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:53:59,939 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:53:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:00,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:00,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:00,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:00,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 19:54:00,607 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:00,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704048298] [2022-01-31 19:54:00,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [704048298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:00,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:00,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 19:54:00,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534174082] [2022-01-31 19:54:00,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:00,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 19:54:00,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:00,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 19:54:00,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:54:00,609 INFO L87 Difference]: Start difference. First operand 91 states and 118 transitions. Second operand has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 27 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:54:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:01,724 INFO L93 Difference]: Finished difference Result 160 states and 204 transitions. [2022-01-31 19:54:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 19:54:01,726 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 27 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2022-01-31 19:54:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:01,727 INFO L225 Difference]: With dead ends: 160 [2022-01-31 19:54:01,727 INFO L226 Difference]: Without dead ends: 155 [2022-01-31 19:54:01,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 19:54:01,728 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 81 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:01,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 96 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:54:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-01-31 19:54:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 97. [2022-01-31 19:54:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.271604938271605) internal successors, (103), 81 states have internal predecessors, (103), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:54:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2022-01-31 19:54:01,765 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 69 [2022-01-31 19:54:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:01,765 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2022-01-31 19:54:01,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 27 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:54:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2022-01-31 19:54:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 19:54:01,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:01,766 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 19:54:01,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 19:54:01,766 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:01,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:01,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1603841780, now seen corresponding path program 7 times [2022-01-31 19:54:01,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:01,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205705915] [2022-01-31 19:54:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:01,774 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:01,774 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:01,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:01,775 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:02,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 19:54:02,799 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:02,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205705915] [2022-01-31 19:54:02,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1205705915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:02,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:02,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 19:54:02,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281076436] [2022-01-31 19:54:02,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:02,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 19:54:02,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:02,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 19:54:02,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:54:02,800 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 31 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 29 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:54:05,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:05,075 INFO L93 Difference]: Finished difference Result 157 states and 197 transitions. [2022-01-31 19:54:05,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 19:54:05,076 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 29 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2022-01-31 19:54:05,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:05,076 INFO L225 Difference]: With dead ends: 157 [2022-01-31 19:54:05,077 INFO L226 Difference]: Without dead ends: 152 [2022-01-31 19:54:05,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=478, Invalid=3812, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 19:54:05,078 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 93 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:05,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 123 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 19:54:05,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-01-31 19:54:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 97. [2022-01-31 19:54:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.271604938271605) internal successors, (103), 81 states have internal predecessors, (103), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:54:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2022-01-31 19:54:05,120 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 69 [2022-01-31 19:54:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:05,121 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2022-01-31 19:54:05,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 29 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:54:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2022-01-31 19:54:05,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 19:54:05,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:05,122 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 19:54:05,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 19:54:05,122 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash -958073740, now seen corresponding path program 8 times [2022-01-31 19:54:05,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:05,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436792684] [2022-01-31 19:54:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:05,124 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:05,124 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:05,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:05,125 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 19:54:05,884 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:05,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436792684] [2022-01-31 19:54:05,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [436792684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:05,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:05,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 19:54:05,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022750911] [2022-01-31 19:54:05,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:05,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 19:54:05,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:05,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 19:54:05,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:54:05,886 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 27 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:54:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:07,180 INFO L93 Difference]: Finished difference Result 138 states and 177 transitions. [2022-01-31 19:54:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 19:54:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 27 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2022-01-31 19:54:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:07,181 INFO L225 Difference]: With dead ends: 138 [2022-01-31 19:54:07,181 INFO L226 Difference]: Without dead ends: 133 [2022-01-31 19:54:07,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 19:54:07,182 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 71 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:07,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 124 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 19:54:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-31 19:54:07,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 103. [2022-01-31 19:54:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 86 states have (on average 1.2790697674418605) internal successors, (110), 86 states have internal predecessors, (110), 14 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:54:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 136 transitions. [2022-01-31 19:54:07,224 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 136 transitions. Word has length 69 [2022-01-31 19:54:07,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:07,225 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 136 transitions. [2022-01-31 19:54:07,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 27 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:54:07,225 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 136 transitions. [2022-01-31 19:54:07,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 19:54:07,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:07,225 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 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] [2022-01-31 19:54:07,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 19:54:07,226 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:07,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:07,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1531455222, now seen corresponding path program 3 times [2022-01-31 19:54:07,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:07,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641256274] [2022-01-31 19:54:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:07,229 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:07,229 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:07,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:07,230 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:08,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:08,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:08,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:08,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:08,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 19:54:08,136 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:08,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641256274] [2022-01-31 19:54:08,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641256274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:08,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:08,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 19:54:08,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791405020] [2022-01-31 19:54:08,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:08,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 19:54:08,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 19:54:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:54:08,138 INFO L87 Difference]: Start difference. First operand 103 states and 136 transitions. Second operand has 31 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 29 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:54:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:10,059 INFO L93 Difference]: Finished difference Result 162 states and 206 transitions. [2022-01-31 19:54:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 19:54:10,059 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 29 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2022-01-31 19:54:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:10,060 INFO L225 Difference]: With dead ends: 162 [2022-01-31 19:54:10,060 INFO L226 Difference]: Without dead ends: 157 [2022-01-31 19:54:10,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=517, Invalid=4039, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:54:10,062 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 93 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:10,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 89 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:54:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-01-31 19:54:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 97. [2022-01-31 19:54:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.271604938271605) internal successors, (103), 81 states have internal predecessors, (103), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:54:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2022-01-31 19:54:10,102 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 69 [2022-01-31 19:54:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:10,102 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2022-01-31 19:54:10,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 29 states have internal predecessors, (43), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 19:54:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2022-01-31 19:54:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-31 19:54:10,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:10,103 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 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] [2022-01-31 19:54:10,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 19:54:10,103 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:10,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:10,103 INFO L85 PathProgramCache]: Analyzing trace with hash -853918706, now seen corresponding path program 8 times [2022-01-31 19:54:10,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:10,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086025021] [2022-01-31 19:54:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:10,106 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:10,107 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:54:10,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:10,117 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 19:54:10,203 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:10,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086025021] [2022-01-31 19:54:10,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2086025021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:10,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:10,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 19:54:10,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508619184] [2022-01-31 19:54:10,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:10,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 19:54:10,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:10,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 19:54:10,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-31 19:54:10,204 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 19:54:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:10,505 INFO L93 Difference]: Finished difference Result 159 states and 205 transitions. [2022-01-31 19:54:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 19:54:10,507 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), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 71 [2022-01-31 19:54:10,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:10,508 INFO L225 Difference]: With dead ends: 159 [2022-01-31 19:54:10,508 INFO L226 Difference]: Without dead ends: 128 [2022-01-31 19:54:10,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-01-31 19:54:10,510 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 132 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:10,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 59 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:54:10,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-01-31 19:54:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 104. [2022-01-31 19:54:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 88 states have (on average 1.25) internal successors, (110), 88 states have internal predecessors, (110), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:54:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 134 transitions. [2022-01-31 19:54:10,562 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 134 transitions. Word has length 71 [2022-01-31 19:54:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:10,562 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 134 transitions. [2022-01-31 19:54:10,562 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), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 19:54:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 134 transitions. [2022-01-31 19:54:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-31 19:54:10,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:10,563 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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, 1] [2022-01-31 19:54:10,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 19:54:10,563 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:10,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1315484256, now seen corresponding path program 9 times [2022-01-31 19:54:10,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:10,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804178641] [2022-01-31 19:54:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:10,566 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:10,566 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:10,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:10,567 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:10,637 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:10,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804178641] [2022-01-31 19:54:10,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [804178641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:10,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:10,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 19:54:10,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670761288] [2022-01-31 19:54:10,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:10,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 19:54:10,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:10,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 19:54:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-31 19:54:10,638 INFO L87 Difference]: Start difference. First operand 104 states and 134 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 19:54:10,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:10,905 INFO L93 Difference]: Finished difference Result 111 states and 141 transitions. [2022-01-31 19:54:10,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 19:54:10,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 79 [2022-01-31 19:54:10,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:10,906 INFO L225 Difference]: With dead ends: 111 [2022-01-31 19:54:10,907 INFO L226 Difference]: Without dead ends: 98 [2022-01-31 19:54:10,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-01-31 19:54:10,907 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 96 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:10,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 63 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:54:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-31 19:54:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2022-01-31 19:54:10,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 states have internal predecessors, (63), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:54:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2022-01-31 19:54:10,936 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 79 [2022-01-31 19:54:10,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:10,936 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2022-01-31 19:54:10,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 19:54:10,936 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2022-01-31 19:54:10,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:10,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:10,937 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:10,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 19:54:10,937 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:10,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:10,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1669206044, now seen corresponding path program 10 times [2022-01-31 19:54:10,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:10,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680191583] [2022-01-31 19:54:10,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:10,941 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:10,941 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:10,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:10,942 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:12,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:12,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:12,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:12,058 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:12,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680191583] [2022-01-31 19:54:12,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [680191583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:12,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:12,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:54:12,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554718534] [2022-01-31 19:54:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:12,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:54:12,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:12,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:54:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:54:12,060 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:13,885 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2022-01-31 19:54:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 19:54:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:13,886 INFO L225 Difference]: With dead ends: 121 [2022-01-31 19:54:13,887 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 19:54:13,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=397, Invalid=4025, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:54:13,888 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 103 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:13,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 104 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:54:13,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 19:54:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2022-01-31 19:54:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 85 states have internal predecessors, (106), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:54:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 130 transitions. [2022-01-31 19:54:13,942 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 130 transitions. Word has length 83 [2022-01-31 19:54:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:13,942 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 130 transitions. [2022-01-31 19:54:13,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:13,943 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 130 transitions. [2022-01-31 19:54:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:13,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:13,943 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 19:54:13,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 19:54:13,943 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:13,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash -702533218, now seen corresponding path program 9 times [2022-01-31 19:54:13,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:13,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162574032] [2022-01-31 19:54:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:13,946 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:13,946 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:13,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:13,947 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:15,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:15,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:15,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:15,366 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:15,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162574032] [2022-01-31 19:54:15,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [162574032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:15,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:15,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:54:15,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462532504] [2022-01-31 19:54:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:15,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:54:15,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:15,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:54:15,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:54:15,369 INFO L87 Difference]: Start difference. First operand 101 states and 130 transitions. Second operand has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:18,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:18,234 INFO L93 Difference]: Finished difference Result 147 states and 182 transitions. [2022-01-31 19:54:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 19:54:18,235 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:18,235 INFO L225 Difference]: With dead ends: 147 [2022-01-31 19:54:18,235 INFO L226 Difference]: Without dead ends: 142 [2022-01-31 19:54:18,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=650, Invalid=5830, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 19:54:18,243 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 101 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:18,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 119 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:54:18,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-01-31 19:54:18,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 101. [2022-01-31 19:54:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 85 states have internal predecessors, (106), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:54:18,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 130 transitions. [2022-01-31 19:54:18,301 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 130 transitions. Word has length 83 [2022-01-31 19:54:18,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:18,302 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 130 transitions. [2022-01-31 19:54:18,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 130 transitions. [2022-01-31 19:54:18,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:18,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:18,302 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 19:54:18,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 19:54:18,303 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:18,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1966229730, now seen corresponding path program 10 times [2022-01-31 19:54:18,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:18,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127324201] [2022-01-31 19:54:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:18,310 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:18,310 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:18,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:18,311 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:19,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:19,428 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:19,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127324201] [2022-01-31 19:54:19,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1127324201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:19,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:19,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:54:19,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227025496] [2022-01-31 19:54:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:19,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:54:19,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:54:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:54:19,430 INFO L87 Difference]: Start difference. First operand 101 states and 130 transitions. Second operand has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:21,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:21,292 INFO L93 Difference]: Finished difference Result 146 states and 184 transitions. [2022-01-31 19:54:21,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 19:54:21,292 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:21,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:21,293 INFO L225 Difference]: With dead ends: 146 [2022-01-31 19:54:21,293 INFO L226 Difference]: Without dead ends: 141 [2022-01-31 19:54:21,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=328, Invalid=4094, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:54:21,294 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 82 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:21,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 117 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 19:54:21,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-31 19:54:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 107. [2022-01-31 19:54:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 90 states have internal predecessors, (113), 14 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:54:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 139 transitions. [2022-01-31 19:54:21,372 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 139 transitions. Word has length 83 [2022-01-31 19:54:21,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:21,372 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 139 transitions. [2022-01-31 19:54:21,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:21,372 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 139 transitions. [2022-01-31 19:54:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:21,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:21,373 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:21,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 19:54:21,373 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:21,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:21,373 INFO L85 PathProgramCache]: Analyzing trace with hash -43001696, now seen corresponding path program 11 times [2022-01-31 19:54:21,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:21,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735778968] [2022-01-31 19:54:21,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:21,377 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:21,377 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:21,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:21,378 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:22,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:22,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:22,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:22,448 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:22,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735778968] [2022-01-31 19:54:22,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1735778968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:22,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:22,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:54:22,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995535227] [2022-01-31 19:54:22,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:22,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:54:22,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:54:22,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:54:22,450 INFO L87 Difference]: Start difference. First operand 107 states and 139 transitions. Second operand has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:24,237 INFO L93 Difference]: Finished difference Result 145 states and 183 transitions. [2022-01-31 19:54:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 19:54:24,237 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:24,238 INFO L225 Difference]: With dead ends: 145 [2022-01-31 19:54:24,238 INFO L226 Difference]: Without dead ends: 140 [2022-01-31 19:54:24,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=328, Invalid=4094, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:54:24,239 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 82 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:24,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 113 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:54:24,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-31 19:54:24,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2022-01-31 19:54:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 85 states have internal predecessors, (106), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:54:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 130 transitions. [2022-01-31 19:54:24,306 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 130 transitions. Word has length 83 [2022-01-31 19:54:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:24,306 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 130 transitions. [2022-01-31 19:54:24,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 130 transitions. [2022-01-31 19:54:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:24,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:24,307 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 19:54:24,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 19:54:24,307 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:24,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:24,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1316117662, now seen corresponding path program 12 times [2022-01-31 19:54:24,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:24,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100689570] [2022-01-31 19:54:24,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:24,312 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:24,313 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:24,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:24,313 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:25,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:25,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:25,441 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:25,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100689570] [2022-01-31 19:54:25,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1100689570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:25,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:25,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:54:25,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293247830] [2022-01-31 19:54:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:25,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:54:25,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:25,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:54:25,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:54:25,442 INFO L87 Difference]: Start difference. First operand 101 states and 130 transitions. Second operand has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:27,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:27,262 INFO L93 Difference]: Finished difference Result 152 states and 193 transitions. [2022-01-31 19:54:27,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 19:54:27,262 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:27,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:27,263 INFO L225 Difference]: With dead ends: 152 [2022-01-31 19:54:27,263 INFO L226 Difference]: Without dead ends: 147 [2022-01-31 19:54:27,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=328, Invalid=4094, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:54:27,264 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 75 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:27,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 126 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:54:27,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-01-31 19:54:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 113. [2022-01-31 19:54:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 95 states have (on average 1.263157894736842) internal successors, (120), 95 states have internal predecessors, (120), 15 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 19:54:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 148 transitions. [2022-01-31 19:54:27,343 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 148 transitions. Word has length 83 [2022-01-31 19:54:27,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:27,343 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 148 transitions. [2022-01-31 19:54:27,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 148 transitions. [2022-01-31 19:54:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:27,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:27,344 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:27,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 19:54:27,344 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:27,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:27,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1055621600, now seen corresponding path program 13 times [2022-01-31 19:54:27,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:27,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745758427] [2022-01-31 19:54:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:27,348 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:27,348 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:27,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:27,349 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:28,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:28,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:28,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:28,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:28,704 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:28,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745758427] [2022-01-31 19:54:28,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1745758427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:28,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:28,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:54:28,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338331057] [2022-01-31 19:54:28,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:28,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:54:28,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:28,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:54:28,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1271, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:54:28,706 INFO L87 Difference]: Start difference. First operand 113 states and 148 transitions. Second operand has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:31,516 INFO L93 Difference]: Finished difference Result 157 states and 198 transitions. [2022-01-31 19:54:31,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 19:54:31,516 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:31,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:31,517 INFO L225 Difference]: With dead ends: 157 [2022-01-31 19:54:31,517 INFO L226 Difference]: Without dead ends: 152 [2022-01-31 19:54:31,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=686, Invalid=6120, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:54:31,518 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 101 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:31,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 127 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:54:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-01-31 19:54:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 107. [2022-01-31 19:54:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 90 states have internal predecessors, (113), 14 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:54:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 139 transitions. [2022-01-31 19:54:31,591 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 139 transitions. Word has length 83 [2022-01-31 19:54:31,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:31,591 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 139 transitions. [2022-01-31 19:54:31,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:31,591 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 139 transitions. [2022-01-31 19:54:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:31,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:31,592 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:31,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 19:54:31,592 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1975649184, now seen corresponding path program 14 times [2022-01-31 19:54:31,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:31,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274717900] [2022-01-31 19:54:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:31,596 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:31,596 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:54:31,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:31,597 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:32,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:32,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:32,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:32,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:32,680 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:32,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274717900] [2022-01-31 19:54:32,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [274717900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:32,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:32,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:54:32,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475186029] [2022-01-31 19:54:32,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:32,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:54:32,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:32,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:54:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:54:32,682 INFO L87 Difference]: Start difference. First operand 107 states and 139 transitions. Second operand has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:34,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:34,389 INFO L93 Difference]: Finished difference Result 151 states and 192 transitions. [2022-01-31 19:54:34,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 19:54:34,389 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:34,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:34,390 INFO L225 Difference]: With dead ends: 151 [2022-01-31 19:54:34,390 INFO L226 Difference]: Without dead ends: 146 [2022-01-31 19:54:34,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=397, Invalid=4025, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:54:34,391 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 104 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1950 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:34,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 84 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1950 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 19:54:34,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-01-31 19:54:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 113. [2022-01-31 19:54:34,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 95 states have (on average 1.263157894736842) internal successors, (120), 95 states have internal predecessors, (120), 15 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 19:54:34,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 148 transitions. [2022-01-31 19:54:34,474 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 148 transitions. Word has length 83 [2022-01-31 19:54:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:34,475 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 148 transitions. [2022-01-31 19:54:34,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 33 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:34,475 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 148 transitions. [2022-01-31 19:54:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:34,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:34,476 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 19:54:34,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 19:54:34,476 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:34,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:34,476 INFO L85 PathProgramCache]: Analyzing trace with hash -396090078, now seen corresponding path program 15 times [2022-01-31 19:54:34,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:34,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313124764] [2022-01-31 19:54:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:34,482 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:34,482 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:54:34,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:34,484 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:35,882 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:35,883 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:35,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313124764] [2022-01-31 19:54:35,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [313124764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:35,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:35,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:54:35,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054391564] [2022-01-31 19:54:35,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:35,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:54:35,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:35,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:54:35,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:54:35,885 INFO L87 Difference]: Start difference. First operand 113 states and 148 transitions. Second operand has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:38,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:38,510 INFO L93 Difference]: Finished difference Result 194 states and 248 transitions. [2022-01-31 19:54:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 19:54:38,510 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:38,511 INFO L225 Difference]: With dead ends: 194 [2022-01-31 19:54:38,511 INFO L226 Difference]: Without dead ends: 189 [2022-01-31 19:54:38,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=643, Invalid=5519, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 19:54:38,512 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 113 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:38,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 132 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:54:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-01-31 19:54:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 121. [2022-01-31 19:54:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 102 states have internal predecessors, (131), 16 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:54:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 161 transitions. [2022-01-31 19:54:38,599 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 161 transitions. Word has length 83 [2022-01-31 19:54:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:38,599 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 161 transitions. [2022-01-31 19:54:38,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 161 transitions. [2022-01-31 19:54:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:38,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:38,600 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 19:54:38,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 19:54:38,600 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1364844002, now seen corresponding path program 16 times [2022-01-31 19:54:38,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:38,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350167395] [2022-01-31 19:54:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:38,605 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:38,605 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:54:38,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:38,606 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:40,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:40,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:40,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:40,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:40,089 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:40,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350167395] [2022-01-31 19:54:40,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [350167395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:40,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:40,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 19:54:40,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578782419] [2022-01-31 19:54:40,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:40,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 19:54:40,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 19:54:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:54:40,090 INFO L87 Difference]: Start difference. First operand 121 states and 161 transitions. Second operand has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:42,461 INFO L93 Difference]: Finished difference Result 208 states and 268 transitions. [2022-01-31 19:54:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 19:54:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:42,462 INFO L225 Difference]: With dead ends: 208 [2022-01-31 19:54:42,462 INFO L226 Difference]: Without dead ends: 203 [2022-01-31 19:54:42,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=545, Invalid=5461, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 19:54:42,463 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 102 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:42,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 106 Invalid, 2220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:54:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-01-31 19:54:42,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 133. [2022-01-31 19:54:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 112 states have internal predecessors, (145), 18 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 19:54:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 179 transitions. [2022-01-31 19:54:42,564 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 179 transitions. Word has length 83 [2022-01-31 19:54:42,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:42,564 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 179 transitions. [2022-01-31 19:54:42,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:42,564 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 179 transitions. [2022-01-31 19:54:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:42,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:42,565 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:42,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 19:54:42,565 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:42,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:42,565 INFO L85 PathProgramCache]: Analyzing trace with hash 558384032, now seen corresponding path program 17 times [2022-01-31 19:54:42,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:42,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829518181] [2022-01-31 19:54:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:42,568 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:42,569 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:54:42,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:42,569 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:44,076 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:44,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829518181] [2022-01-31 19:54:44,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [829518181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:44,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:44,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 19:54:44,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965808929] [2022-01-31 19:54:44,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:44,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 19:54:44,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:44,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 19:54:44,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1349, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:54:44,078 INFO L87 Difference]: Start difference. First operand 133 states and 179 transitions. Second operand has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:47,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:47,136 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2022-01-31 19:54:47,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 19:54:47,136 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:47,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:47,137 INFO L225 Difference]: With dead ends: 212 [2022-01-31 19:54:47,137 INFO L226 Difference]: Without dead ends: 207 [2022-01-31 19:54:47,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=666, Invalid=6140, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:54:47,138 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 96 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:47,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 129 Invalid, 2207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:54:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-01-31 19:54:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 127. [2022-01-31 19:54:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 107 states have (on average 1.2897196261682242) internal successors, (138), 107 states have internal predecessors, (138), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:54:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 170 transitions. [2022-01-31 19:54:47,240 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 170 transitions. Word has length 83 [2022-01-31 19:54:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:47,240 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 170 transitions. [2022-01-31 19:54:47,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:47,240 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 170 transitions. [2022-01-31 19:54:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:47,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:47,241 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:47,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 19:54:47,241 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:47,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:47,241 INFO L85 PathProgramCache]: Analyzing trace with hash -705312480, now seen corresponding path program 18 times [2022-01-31 19:54:47,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:47,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533202567] [2022-01-31 19:54:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:47,247 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:47,248 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:54:47,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:47,249 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:48,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:48,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:48,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:48,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:48,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:48,480 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:48,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533202567] [2022-01-31 19:54:48,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1533202567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:48,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:48,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 19:54:48,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910922471] [2022-01-31 19:54:48,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:48,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 19:54:48,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:48,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 19:54:48,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1160, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:54:48,481 INFO L87 Difference]: Start difference. First operand 127 states and 170 transitions. Second operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 34 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:50,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:50,449 INFO L93 Difference]: Finished difference Result 205 states and 265 transitions. [2022-01-31 19:54:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 19:54:50,449 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 34 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:50,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:50,450 INFO L225 Difference]: With dead ends: 205 [2022-01-31 19:54:50,450 INFO L226 Difference]: Without dead ends: 200 [2022-01-31 19:54:50,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=340, Invalid=4352, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 19:54:50,451 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 79 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:50,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 137 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 19:54:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-01-31 19:54:50,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 133. [2022-01-31 19:54:50,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 112 states have internal predecessors, (145), 18 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 19:54:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 179 transitions. [2022-01-31 19:54:50,574 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 179 transitions. Word has length 83 [2022-01-31 19:54:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:50,574 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 179 transitions. [2022-01-31 19:54:50,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 34 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 179 transitions. [2022-01-31 19:54:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:50,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:50,575 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 19:54:50,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 19:54:50,575 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:50,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1217915554, now seen corresponding path program 19 times [2022-01-31 19:54:50,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:50,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317762049] [2022-01-31 19:54:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:50,591 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:50,592 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:50,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:50,593 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:52,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:52,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:52,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:52,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:52,039 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:52,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317762049] [2022-01-31 19:54:52,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1317762049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:52,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:52,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 19:54:52,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963757462] [2022-01-31 19:54:52,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:52,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 19:54:52,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 19:54:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:54:52,041 INFO L87 Difference]: Start difference. First operand 133 states and 179 transitions. Second operand has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:55,455 INFO L93 Difference]: Finished difference Result 209 states and 269 transitions. [2022-01-31 19:54:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 19:54:55,457 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:55,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:55,458 INFO L225 Difference]: With dead ends: 209 [2022-01-31 19:54:55,458 INFO L226 Difference]: Without dead ends: 204 [2022-01-31 19:54:55,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=694, Invalid=6446, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 19:54:55,459 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 99 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:55,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 154 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 19:54:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-01-31 19:54:55,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 121. [2022-01-31 19:54:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 102 states have internal predecessors, (131), 16 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:54:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 161 transitions. [2022-01-31 19:54:55,558 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 161 transitions. Word has length 83 [2022-01-31 19:54:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:55,558 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 161 transitions. [2022-01-31 19:54:55,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 161 transitions. [2022-01-31 19:54:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:55,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:55,559 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:54:55,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 19:54:55,559 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1717932384, now seen corresponding path program 20 times [2022-01-31 19:54:55,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:55,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076739276] [2022-01-31 19:54:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:55,563 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:55,563 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:54:55,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:55,564 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:54:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:54:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:54:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:54:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:54:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:54:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:54:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:54:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:54:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:54:57,002 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:54:57,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076739276] [2022-01-31 19:54:57,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2076739276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:54:57,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:54:57,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:54:57,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596017778] [2022-01-31 19:54:57,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:54:57,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:54:57,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:54:57,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:54:57,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:54:57,004 INFO L87 Difference]: Start difference. First operand 121 states and 161 transitions. Second operand has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:59,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:54:59,889 INFO L93 Difference]: Finished difference Result 203 states and 260 transitions. [2022-01-31 19:54:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 19:54:59,889 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:54:59,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:54:59,890 INFO L225 Difference]: With dead ends: 203 [2022-01-31 19:54:59,890 INFO L226 Difference]: Without dead ends: 198 [2022-01-31 19:54:59,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=616, Invalid=5864, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 19:54:59,891 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 105 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:54:59,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 107 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1889 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:54:59,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-31 19:54:59,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 127. [2022-01-31 19:54:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 107 states have (on average 1.2897196261682242) internal successors, (138), 107 states have internal predecessors, (138), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:54:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 170 transitions. [2022-01-31 19:54:59,990 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 170 transitions. Word has length 83 [2022-01-31 19:54:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:54:59,990 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 170 transitions. [2022-01-31 19:54:59,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:54:59,991 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 170 transitions. [2022-01-31 19:54:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:54:59,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:54:59,991 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 19:54:59,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 19:54:59,991 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:54:59,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:54:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash 205295650, now seen corresponding path program 21 times [2022-01-31 19:54:59,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:54:59,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901606799] [2022-01-31 19:54:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:54:59,998 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:54:59,998 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:54:59,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:54:59,999 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:01,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:01,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:01,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:01,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:01,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:55:01,428 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:01,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901606799] [2022-01-31 19:55:01,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [901606799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:01,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:01,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:55:01,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943152021] [2022-01-31 19:55:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:01,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:55:01,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:55:01,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1284, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:55:01,430 INFO L87 Difference]: Start difference. First operand 127 states and 170 transitions. Second operand has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:55:05,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:05,080 INFO L93 Difference]: Finished difference Result 229 states and 301 transitions. [2022-01-31 19:55:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 19:55:05,080 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:55:05,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:05,081 INFO L225 Difference]: With dead ends: 229 [2022-01-31 19:55:05,081 INFO L226 Difference]: Without dead ends: 224 [2022-01-31 19:55:05,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=767, Invalid=6543, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 19:55:05,082 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 107 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:05,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 135 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:55:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-01-31 19:55:05,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 125. [2022-01-31 19:55:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 105 states have (on average 1.2952380952380953) internal successors, (136), 105 states have internal predecessors, (136), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:55:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 168 transitions. [2022-01-31 19:55:05,189 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 168 transitions. Word has length 83 [2022-01-31 19:55:05,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:05,190 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 168 transitions. [2022-01-31 19:55:05,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 36 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:55:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 168 transitions. [2022-01-31 19:55:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:55:05,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:05,191 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 19:55:05,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 19:55:05,191 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:05,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:05,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1058400862, now seen corresponding path program 22 times [2022-01-31 19:55:05,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:05,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825005018] [2022-01-31 19:55:05,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:05,194 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:05,194 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:55:05,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:05,195 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:06,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:06,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:06,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:06,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:55:06,603 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:06,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825005018] [2022-01-31 19:55:06,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [825005018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:06,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:06,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 19:55:06,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632999959] [2022-01-31 19:55:06,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:06,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 19:55:06,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 19:55:06,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:55:06,604 INFO L87 Difference]: Start difference. First operand 125 states and 168 transitions. Second operand has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:55:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:09,427 INFO L93 Difference]: Finished difference Result 198 states and 252 transitions. [2022-01-31 19:55:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 19:55:09,428 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:55:09,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:09,429 INFO L225 Difference]: With dead ends: 198 [2022-01-31 19:55:09,429 INFO L226 Difference]: Without dead ends: 193 [2022-01-31 19:55:09,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=659, Invalid=6147, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:55:09,430 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 102 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:09,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 132 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:55:09,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-01-31 19:55:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 125. [2022-01-31 19:55:09,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 105 states have (on average 1.2952380952380953) internal successors, (136), 105 states have internal predecessors, (136), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:55:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 168 transitions. [2022-01-31 19:55:09,551 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 168 transitions. Word has length 83 [2022-01-31 19:55:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:09,551 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 168 transitions. [2022-01-31 19:55:09,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:55:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 168 transitions. [2022-01-31 19:55:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 19:55:09,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:09,552 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:09,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 19:55:09,552 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:09,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:09,552 INFO L85 PathProgramCache]: Analyzing trace with hash 864827172, now seen corresponding path program 4 times [2022-01-31 19:55:09,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:09,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105269514] [2022-01-31 19:55:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:09,555 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:09,555 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:55:09,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:09,556 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:10,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:10,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:10,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:10,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:55:10,684 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:10,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105269514] [2022-01-31 19:55:10,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1105269514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:10,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:10,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 19:55:10,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152713617] [2022-01-31 19:55:10,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:10,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 19:55:10,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:10,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 19:55:10,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1160, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:55:10,685 INFO L87 Difference]: Start difference. First operand 125 states and 168 transitions. Second operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 34 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:55:12,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:12,540 INFO L93 Difference]: Finished difference Result 190 states and 244 transitions. [2022-01-31 19:55:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 19:55:12,541 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 34 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 83 [2022-01-31 19:55:12,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:12,542 INFO L225 Difference]: With dead ends: 190 [2022-01-31 19:55:12,542 INFO L226 Difference]: Without dead ends: 185 [2022-01-31 19:55:12,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=340, Invalid=4352, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 19:55:12,542 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 79 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:12,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 105 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:55:12,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-01-31 19:55:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 107. [2022-01-31 19:55:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 90 states have internal predecessors, (115), 14 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:55:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 141 transitions. [2022-01-31 19:55:12,639 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 141 transitions. Word has length 83 [2022-01-31 19:55:12,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:12,640 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 141 transitions. [2022-01-31 19:55:12,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 34 states have internal predecessors, (52), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 19:55:12,640 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 141 transitions. [2022-01-31 19:55:12,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-31 19:55:12,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:12,640 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:12,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 19:55:12,640 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:12,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:12,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1583022650, now seen corresponding path program 11 times [2022-01-31 19:55:12,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:12,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891944044] [2022-01-31 19:55:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:12,643 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:12,643 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:55:12,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:12,644 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:12,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:12,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:12,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 19:55:12,723 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:12,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891944044] [2022-01-31 19:55:12,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [891944044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:12,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:12,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 19:55:12,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284505761] [2022-01-31 19:55:12,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:12,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 19:55:12,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 19:55:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:55:12,724 INFO L87 Difference]: Start difference. First operand 107 states and 141 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 19:55:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:13,119 INFO L93 Difference]: Finished difference Result 174 states and 221 transitions. [2022-01-31 19:55:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 19:55:13,120 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 85 [2022-01-31 19:55:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:13,120 INFO L225 Difference]: With dead ends: 174 [2022-01-31 19:55:13,120 INFO L226 Difference]: Without dead ends: 137 [2022-01-31 19:55:13,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2022-01-31 19:55:13,121 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 170 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:13,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 49 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:55:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-01-31 19:55:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 120. [2022-01-31 19:55:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 103 states have (on average 1.2427184466019416) internal successors, (128), 103 states have internal predecessors, (128), 14 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:55:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2022-01-31 19:55:13,235 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 85 [2022-01-31 19:55:13,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:13,235 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2022-01-31 19:55:13,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 6 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 19:55:13,235 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2022-01-31 19:55:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-31 19:55:13,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:13,236 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:13,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 19:55:13,236 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:13,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1636611380, now seen corresponding path program 12 times [2022-01-31 19:55:13,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:13,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784167270] [2022-01-31 19:55:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:13,241 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:13,242 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:55:13,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:13,243 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:13,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:13,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:13,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:55:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:55:13,330 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:13,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784167270] [2022-01-31 19:55:13,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1784167270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:13,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:13,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 19:55:13,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238420039] [2022-01-31 19:55:13,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:13,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 19:55:13,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:13,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 19:55:13,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:55:13,331 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-31 19:55:13,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:13,741 INFO L93 Difference]: Finished difference Result 127 states and 161 transitions. [2022-01-31 19:55:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 19:55:13,742 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 93 [2022-01-31 19:55:13,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:13,742 INFO L225 Difference]: With dead ends: 127 [2022-01-31 19:55:13,742 INFO L226 Difference]: Without dead ends: 112 [2022-01-31 19:55:13,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:55:13,745 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 114 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:13,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 66 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:55:13,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-31 19:55:13,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 74. [2022-01-31 19:55:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 61 states have internal predecessors, (74), 10 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 19:55:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2022-01-31 19:55:13,807 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 93 [2022-01-31 19:55:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:13,807 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2022-01-31 19:55:13,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-31 19:55:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2022-01-31 19:55:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:55:13,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:13,808 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:13,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 19:55:13,808 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:13,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1586530120, now seen corresponding path program 13 times [2022-01-31 19:55:13,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:13,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536442885] [2022-01-31 19:55:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:13,815 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:13,816 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:55:13,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:13,820 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:15,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:15,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:15,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:15,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:15,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:15,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:55:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:55:15,807 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:15,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536442885] [2022-01-31 19:55:15,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [536442885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:15,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:15,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:55:15,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323785748] [2022-01-31 19:55:15,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:15,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:55:15,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:15,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:55:15,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:55:15,808 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:20,619 INFO L93 Difference]: Finished difference Result 157 states and 197 transitions. [2022-01-31 19:55:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:55:20,620 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:55:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:20,620 INFO L225 Difference]: With dead ends: 157 [2022-01-31 19:55:20,620 INFO L226 Difference]: Without dead ends: 152 [2022-01-31 19:55:20,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2385 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=943, Invalid=9157, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:55:20,621 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 132 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2849 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:20,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 163 Invalid, 3021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2849 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 19:55:20,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-01-31 19:55:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 127. [2022-01-31 19:55:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.2592592592592593) internal successors, (136), 108 states have internal predecessors, (136), 16 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:55:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2022-01-31 19:55:20,766 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 97 [2022-01-31 19:55:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:20,767 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2022-01-31 19:55:20,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2022-01-31 19:55:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:55:20,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:20,768 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 19:55:20,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 19:55:20,768 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:20,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:20,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2006837302, now seen corresponding path program 23 times [2022-01-31 19:55:20,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:20,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145803269] [2022-01-31 19:55:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:20,772 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:20,772 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:55:20,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:20,775 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:22,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:22,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:22,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:22,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:22,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:55:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:55:22,676 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:22,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145803269] [2022-01-31 19:55:22,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2145803269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:22,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:22,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:55:22,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533924873] [2022-01-31 19:55:22,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:22,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:55:22,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:22,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:55:22,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:55:22,677 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:26,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:26,665 INFO L93 Difference]: Finished difference Result 180 states and 228 transitions. [2022-01-31 19:55:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 19:55:26,666 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:55:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:26,666 INFO L225 Difference]: With dead ends: 180 [2022-01-31 19:55:26,666 INFO L226 Difference]: Without dead ends: 175 [2022-01-31 19:55:26,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2244 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=841, Invalid=8471, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 19:55:26,667 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 108 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:26,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 137 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2659 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 19:55:26,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-01-31 19:55:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 127. [2022-01-31 19:55:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.2592592592592593) internal successors, (136), 108 states have internal predecessors, (136), 16 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:55:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2022-01-31 19:55:26,811 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 97 [2022-01-31 19:55:26,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:26,811 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2022-01-31 19:55:26,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2022-01-31 19:55:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:55:26,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:26,812 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 19:55:26,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 19:55:26,812 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:26,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2010176842, now seen corresponding path program 24 times [2022-01-31 19:55:26,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:26,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588749567] [2022-01-31 19:55:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:26,816 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:26,816 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:55:26,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:26,817 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:28,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:28,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:28,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:28,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:28,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:28,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:55:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:55:28,783 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588749567] [2022-01-31 19:55:28,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [588749567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:28,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:28,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:55:28,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384601711] [2022-01-31 19:55:28,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:28,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:55:28,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:55:28,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1818, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:55:28,784 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:32,757 INFO L93 Difference]: Finished difference Result 177 states and 222 transitions. [2022-01-31 19:55:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 19:55:32,758 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:55:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:32,758 INFO L225 Difference]: With dead ends: 177 [2022-01-31 19:55:32,758 INFO L226 Difference]: Without dead ends: 172 [2022-01-31 19:55:32,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2226 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=825, Invalid=8487, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 19:55:32,759 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 105 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:32,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 141 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2697 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 19:55:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-31 19:55:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 123. [2022-01-31 19:55:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 105 states have internal predecessors, (131), 15 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 19:55:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 159 transitions. [2022-01-31 19:55:32,912 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 159 transitions. Word has length 97 [2022-01-31 19:55:32,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:32,912 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 159 transitions. [2022-01-31 19:55:32,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:32,912 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 159 transitions. [2022-01-31 19:55:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:55:32,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:32,913 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:32,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 19:55:32,913 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:32,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:32,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1583190580, now seen corresponding path program 25 times [2022-01-31 19:55:32,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:32,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024319985] [2022-01-31 19:55:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:32,917 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:32,917 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:55:32,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:32,918 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:34,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:34,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:34,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:34,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:34,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:55:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:55:34,943 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:34,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024319985] [2022-01-31 19:55:34,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2024319985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:34,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:34,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:55:34,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159669452] [2022-01-31 19:55:34,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:34,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:55:34,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:34,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:55:34,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:55:34,944 INFO L87 Difference]: Start difference. First operand 123 states and 159 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:39,572 INFO L93 Difference]: Finished difference Result 236 states and 301 transitions. [2022-01-31 19:55:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:55:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:55:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:39,573 INFO L225 Difference]: With dead ends: 236 [2022-01-31 19:55:39,573 INFO L226 Difference]: Without dead ends: 231 [2022-01-31 19:55:39,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1036, Invalid=9064, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:55:39,574 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 123 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:39,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 140 Invalid, 2660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:55:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-01-31 19:55:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 137. [2022-01-31 19:55:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 117 states have (on average 1.2735042735042734) internal successors, (149), 117 states have internal predecessors, (149), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:55:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 181 transitions. [2022-01-31 19:55:39,742 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 181 transitions. Word has length 97 [2022-01-31 19:55:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:39,742 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 181 transitions. [2022-01-31 19:55:39,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 181 transitions. [2022-01-31 19:55:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:55:39,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:39,743 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 19:55:39,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 19:55:39,743 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash -442055990, now seen corresponding path program 26 times [2022-01-31 19:55:39,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:39,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306609531] [2022-01-31 19:55:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:39,746 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:39,746 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:55:39,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:39,747 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:41,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:41,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:41,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:41,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:41,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:41,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:55:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:55:41,688 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:41,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306609531] [2022-01-31 19:55:41,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [306609531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:41,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:41,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:55:41,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621733714] [2022-01-31 19:55:41,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:41,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:55:41,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:41,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:55:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:55:41,690 INFO L87 Difference]: Start difference. First operand 137 states and 181 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:45,729 INFO L93 Difference]: Finished difference Result 224 states and 283 transitions. [2022-01-31 19:55:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 19:55:45,729 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:55:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:45,730 INFO L225 Difference]: With dead ends: 224 [2022-01-31 19:55:45,730 INFO L226 Difference]: Without dead ends: 219 [2022-01-31 19:55:45,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2238 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=838, Invalid=8474, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 19:55:45,731 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 101 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:45,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 129 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2649 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 19:55:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-01-31 19:55:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 149. [2022-01-31 19:55:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 127 states have (on average 1.2913385826771653) internal successors, (164), 127 states have internal predecessors, (164), 19 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 19:55:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 200 transitions. [2022-01-31 19:55:45,939 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 200 transitions. Word has length 97 [2022-01-31 19:55:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:45,939 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 200 transitions. [2022-01-31 19:55:45,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 200 transitions. [2022-01-31 19:55:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:55:45,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:45,940 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:45,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 19:55:45,940 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:45,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:45,941 INFO L85 PathProgramCache]: Analyzing trace with hash 259543884, now seen corresponding path program 27 times [2022-01-31 19:55:45,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:45,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384893617] [2022-01-31 19:55:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:45,944 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:45,944 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:55:45,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:45,946 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:47,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:47,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:47,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:55:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:55:47,955 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:47,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384893617] [2022-01-31 19:55:47,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [384893617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:47,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:47,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:55:47,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452065891] [2022-01-31 19:55:47,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:47,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:55:47,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:55:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1813, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:55:47,957 INFO L87 Difference]: Start difference. First operand 149 states and 200 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:52,139 INFO L93 Difference]: Finished difference Result 222 states and 281 transitions. [2022-01-31 19:55:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 19:55:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:55:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:52,140 INFO L225 Difference]: With dead ends: 222 [2022-01-31 19:55:52,140 INFO L226 Difference]: Without dead ends: 217 [2022-01-31 19:55:52,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2464 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=876, Invalid=8826, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:55:52,141 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 109 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:52,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 120 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:55:52,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-31 19:55:52,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 149. [2022-01-31 19:55:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 127 states have (on average 1.2913385826771653) internal successors, (164), 127 states have internal predecessors, (164), 19 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 19:55:52,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 200 transitions. [2022-01-31 19:55:52,348 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 200 transitions. Word has length 97 [2022-01-31 19:55:52,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:52,348 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 200 transitions. [2022-01-31 19:55:52,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:52,348 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 200 transitions. [2022-01-31 19:55:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:55:52,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:52,349 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:52,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 19:55:52,349 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:52,349 INFO L85 PathProgramCache]: Analyzing trace with hash -18409268, now seen corresponding path program 28 times [2022-01-31 19:55:52,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:52,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72315644] [2022-01-31 19:55:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:52,356 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:52,356 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:55:52,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:52,357 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:55:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:54,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:55:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:54,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:55:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:54,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:55:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:55:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:54,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:55:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:54,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:55:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:55:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:55:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:55:54,378 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:55:54,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72315644] [2022-01-31 19:55:54,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [72315644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:55:54,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:55:54,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:55:54,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141319085] [2022-01-31 19:55:54,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:55:54,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:55:54,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:55:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:55:54,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:55:54,379 INFO L87 Difference]: Start difference. First operand 149 states and 200 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:58,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:55:58,715 INFO L93 Difference]: Finished difference Result 234 states and 300 transitions. [2022-01-31 19:55:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 19:55:58,715 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:55:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:55:58,716 INFO L225 Difference]: With dead ends: 234 [2022-01-31 19:55:58,716 INFO L226 Difference]: Without dead ends: 229 [2022-01-31 19:55:58,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2238 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=838, Invalid=8474, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 19:55:58,717 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 103 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 3165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:55:58,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 161 Invalid, 3165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 19:55:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-31 19:55:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 153. [2022-01-31 19:55:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 130 states have (on average 1.3) internal successors, (169), 130 states have internal predecessors, (169), 20 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:55:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 207 transitions. [2022-01-31 19:55:58,920 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 207 transitions. Word has length 97 [2022-01-31 19:55:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:55:58,920 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 207 transitions. [2022-01-31 19:55:58,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:55:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 207 transitions. [2022-01-31 19:55:58,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:55:58,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:55:58,921 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:55:58,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 19:55:58,921 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:55:58,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:55:58,921 INFO L85 PathProgramCache]: Analyzing trace with hash 683190606, now seen corresponding path program 29 times [2022-01-31 19:55:58,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:55:58,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110755971] [2022-01-31 19:55:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:55:58,926 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:55:58,926 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:55:58,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:55:58,927 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:55:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:00,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:00,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:00,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:56:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:56:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:56:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:56:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:56:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:56:00,853 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:00,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110755971] [2022-01-31 19:56:00,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [110755971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:00,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:00,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:56:00,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206945817] [2022-01-31 19:56:00,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:00,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:56:00,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:56:00,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:56:00,855 INFO L87 Difference]: Start difference. First operand 153 states and 207 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:05,639 INFO L93 Difference]: Finished difference Result 249 states and 323 transitions. [2022-01-31 19:56:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 19:56:05,640 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:56:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:05,640 INFO L225 Difference]: With dead ends: 249 [2022-01-31 19:56:05,641 INFO L226 Difference]: Without dead ends: 244 [2022-01-31 19:56:05,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=937, Invalid=8963, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 19:56:05,641 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 114 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:05,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 146 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 19:56:05,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-01-31 19:56:05,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 153. [2022-01-31 19:56:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 130 states have (on average 1.3) internal successors, (169), 130 states have internal predecessors, (169), 20 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:56:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 207 transitions. [2022-01-31 19:56:05,863 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 207 transitions. Word has length 97 [2022-01-31 19:56:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:05,864 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 207 transitions. [2022-01-31 19:56:05,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 207 transitions. [2022-01-31 19:56:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:56:05,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:05,864 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 19:56:05,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 19:56:05,866 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:05,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:05,866 INFO L85 PathProgramCache]: Analyzing trace with hash -746862518, now seen corresponding path program 30 times [2022-01-31 19:56:05,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:05,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842741327] [2022-01-31 19:56:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:05,873 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:56:05,873 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:56:05,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:05,874 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:56:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:56:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:56:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:56:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:56:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:56:07,845 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:07,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842741327] [2022-01-31 19:56:07,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1842741327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:07,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:07,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:56:07,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762185090] [2022-01-31 19:56:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:07,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:56:07,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:07,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:56:07,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:56:07,846 INFO L87 Difference]: Start difference. First operand 153 states and 207 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:12,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:12,761 INFO L93 Difference]: Finished difference Result 230 states and 303 transitions. [2022-01-31 19:56:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:56:12,761 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:56:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:12,768 INFO L225 Difference]: With dead ends: 230 [2022-01-31 19:56:12,768 INFO L226 Difference]: Without dead ends: 225 [2022-01-31 19:56:12,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=980, Invalid=9322, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 19:56:12,769 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 124 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:12,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 166 Invalid, 3086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:56:12,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-31 19:56:13,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 179. [2022-01-31 19:56:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 152 states have (on average 1.3157894736842106) internal successors, (200), 152 states have internal predecessors, (200), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:56:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 246 transitions. [2022-01-31 19:56:13,028 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 246 transitions. Word has length 97 [2022-01-31 19:56:13,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:13,028 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 246 transitions. [2022-01-31 19:56:13,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:13,028 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 246 transitions. [2022-01-31 19:56:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:56:13,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:13,029 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:13,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 19:56:13,029 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:13,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:13,029 INFO L85 PathProgramCache]: Analyzing trace with hash -45262644, now seen corresponding path program 31 times [2022-01-31 19:56:13,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:13,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075752695] [2022-01-31 19:56:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:13,032 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:56:13,032 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:56:13,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:13,034 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:14,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:15,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:56:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:15,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:56:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:15,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:56:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:56:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:56:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:56:15,016 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:15,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075752695] [2022-01-31 19:56:15,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1075752695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:15,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:15,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:56:15,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418672742] [2022-01-31 19:56:15,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:15,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:56:15,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:15,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:56:15,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:56:15,017 INFO L87 Difference]: Start difference. First operand 179 states and 246 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:20,106 INFO L93 Difference]: Finished difference Result 267 states and 349 transitions. [2022-01-31 19:56:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:56:20,106 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:56:20,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:20,107 INFO L225 Difference]: With dead ends: 267 [2022-01-31 19:56:20,107 INFO L226 Difference]: Without dead ends: 262 [2022-01-31 19:56:20,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2383 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=955, Invalid=9145, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:56:20,108 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 106 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 3240 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 3402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:20,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 167 Invalid, 3402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3240 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 19:56:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-01-31 19:56:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 173. [2022-01-31 19:56:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 147 states have (on average 1.3129251700680271) internal successors, (193), 147 states have internal predecessors, (193), 23 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:56:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 237 transitions. [2022-01-31 19:56:20,367 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 237 transitions. Word has length 97 [2022-01-31 19:56:20,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:20,368 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 237 transitions. [2022-01-31 19:56:20,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:20,368 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 237 transitions. [2022-01-31 19:56:20,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:56:20,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:20,369 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:20,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 19:56:20,369 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash -323215796, now seen corresponding path program 32 times [2022-01-31 19:56:20,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:20,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134001693] [2022-01-31 19:56:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:20,372 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:56:20,372 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:56:20,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:20,373 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:22,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:56:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:56:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:22,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:56:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:56:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:22,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:56:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:22,451 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:56:22,451 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:22,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134001693] [2022-01-31 19:56:22,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1134001693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:22,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:22,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:56:22,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129810108] [2022-01-31 19:56:22,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:22,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:56:22,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:22,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:56:22,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1810, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:56:22,453 INFO L87 Difference]: Start difference. First operand 173 states and 237 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:27,587 INFO L93 Difference]: Finished difference Result 296 states and 391 transitions. [2022-01-31 19:56:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:56:27,588 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:56:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:27,589 INFO L225 Difference]: With dead ends: 296 [2022-01-31 19:56:27,589 INFO L226 Difference]: Without dead ends: 291 [2022-01-31 19:56:27,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1078, Invalid=9224, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 19:56:27,590 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 110 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2945 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:27,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 163 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2945 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 19:56:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-01-31 19:56:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 193. [2022-01-31 19:56:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 164 states have (on average 1.329268292682927) internal successors, (218), 164 states have internal predecessors, (218), 26 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:56:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 268 transitions. [2022-01-31 19:56:27,872 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 268 transitions. Word has length 97 [2022-01-31 19:56:27,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:27,873 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 268 transitions. [2022-01-31 19:56:27,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 268 transitions. [2022-01-31 19:56:27,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:56:27,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:27,874 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:27,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 19:56:27,874 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:27,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:27,874 INFO L85 PathProgramCache]: Analyzing trace with hash 378384078, now seen corresponding path program 33 times [2022-01-31 19:56:27,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:27,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404637041] [2022-01-31 19:56:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:27,877 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:56:27,877 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:56:27,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:27,878 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:29,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:29,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:56:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:56:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:29,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:56:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:29,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:56:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:56:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:56:29,799 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:29,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404637041] [2022-01-31 19:56:29,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [404637041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:29,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:29,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:56:29,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619072667] [2022-01-31 19:56:29,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:29,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:56:29,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:29,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:56:29,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:56:29,800 INFO L87 Difference]: Start difference. First operand 193 states and 268 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:33,599 INFO L93 Difference]: Finished difference Result 262 states and 344 transitions. [2022-01-31 19:56:33,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 19:56:33,600 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:56:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:33,601 INFO L225 Difference]: With dead ends: 262 [2022-01-31 19:56:33,601 INFO L226 Difference]: Without dead ends: 257 [2022-01-31 19:56:33,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=751, Invalid=7991, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 19:56:33,602 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 105 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2944 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:33,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 153 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2944 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:56:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-01-31 19:56:33,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 179. [2022-01-31 19:56:33,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 152 states have (on average 1.3223684210526316) internal successors, (201), 152 states have internal predecessors, (201), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:56:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 247 transitions. [2022-01-31 19:56:33,866 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 247 transitions. Word has length 97 [2022-01-31 19:56:33,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:33,866 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 247 transitions. [2022-01-31 19:56:33,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 247 transitions. [2022-01-31 19:56:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:56:33,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:33,867 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:33,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 19:56:33,868 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1519518668, now seen corresponding path program 34 times [2022-01-31 19:56:33,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:33,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182003983] [2022-01-31 19:56:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:33,871 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:56:33,871 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:56:33,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:33,872 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:35,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:35,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:56:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:56:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:35,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:56:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:56:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:35,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:56:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:56:35,761 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:35,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182003983] [2022-01-31 19:56:35,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [182003983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:35,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:35,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:56:35,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820286535] [2022-01-31 19:56:35,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:35,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:56:35,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:35,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:56:35,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:56:35,762 INFO L87 Difference]: Start difference. First operand 179 states and 247 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:40,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:40,737 INFO L93 Difference]: Finished difference Result 272 states and 358 transitions. [2022-01-31 19:56:40,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:56:40,738 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:56:40,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:40,739 INFO L225 Difference]: With dead ends: 272 [2022-01-31 19:56:40,739 INFO L226 Difference]: Without dead ends: 267 [2022-01-31 19:56:40,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=980, Invalid=9322, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 19:56:40,740 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 131 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:40,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 133 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:56:40,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-01-31 19:56:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 179. [2022-01-31 19:56:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 152 states have (on average 1.3157894736842106) internal successors, (200), 152 states have internal predecessors, (200), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:56:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 246 transitions. [2022-01-31 19:56:41,003 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 246 transitions. Word has length 97 [2022-01-31 19:56:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:41,004 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 246 transitions. [2022-01-31 19:56:41,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 246 transitions. [2022-01-31 19:56:41,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:56:41,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:41,004 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:41,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 19:56:41,005 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:41,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:41,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2073848754, now seen corresponding path program 35 times [2022-01-31 19:56:41,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:41,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43877359] [2022-01-31 19:56:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:41,010 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:56:41,010 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:56:41,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:41,011 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:43,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:43,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:56:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:43,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:56:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:43,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:56:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:43,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:56:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:43,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:56:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:56:43,036 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:43,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43877359] [2022-01-31 19:56:43,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [43877359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:43,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:43,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:56:43,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923868504] [2022-01-31 19:56:43,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:43,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:56:43,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:43,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:56:43,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:56:43,038 INFO L87 Difference]: Start difference. First operand 179 states and 246 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:47,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:47,944 INFO L93 Difference]: Finished difference Result 267 states and 349 transitions. [2022-01-31 19:56:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:56:47,944 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:56:47,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:47,945 INFO L225 Difference]: With dead ends: 267 [2022-01-31 19:56:47,945 INFO L226 Difference]: Without dead ends: 262 [2022-01-31 19:56:47,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2421 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1049, Invalid=9051, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:56:47,946 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 121 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:47,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 138 Invalid, 2581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:56:47,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-01-31 19:56:48,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 173. [2022-01-31 19:56:48,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 147 states have (on average 1.3129251700680271) internal successors, (193), 147 states have internal predecessors, (193), 23 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:56:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 237 transitions. [2022-01-31 19:56:48,204 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 237 transitions. Word has length 97 [2022-01-31 19:56:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:48,204 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 237 transitions. [2022-01-31 19:56:48,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:48,204 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 237 transitions. [2022-01-31 19:56:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:56:48,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:48,205 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:56:48,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 19:56:48,205 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:48,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1943165390, now seen corresponding path program 36 times [2022-01-31 19:56:48,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:48,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368301248] [2022-01-31 19:56:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:48,208 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:56:48,208 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:56:48,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:48,209 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:50,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:50,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:56:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:50,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:56:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:56:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:56:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:56:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:56:50,084 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:50,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368301248] [2022-01-31 19:56:50,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [368301248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:50,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:50,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:56:50,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877284583] [2022-01-31 19:56:50,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:50,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:56:50,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:50,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:56:50,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:56:50,085 INFO L87 Difference]: Start difference. First operand 173 states and 237 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:54,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:56:54,431 INFO L93 Difference]: Finished difference Result 247 states and 319 transitions. [2022-01-31 19:56:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 19:56:54,432 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:56:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:56:54,433 INFO L225 Difference]: With dead ends: 247 [2022-01-31 19:56:54,433 INFO L226 Difference]: Without dead ends: 242 [2022-01-31 19:56:54,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2234 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=838, Invalid=8474, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 19:56:54,438 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 113 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:56:54,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 154 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2764 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:56:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-31 19:56:54,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 173. [2022-01-31 19:56:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 147 states have (on average 1.3129251700680271) internal successors, (193), 147 states have internal predecessors, (193), 23 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:56:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 237 transitions. [2022-01-31 19:56:54,704 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 237 transitions. Word has length 97 [2022-01-31 19:56:54,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:56:54,704 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 237 transitions. [2022-01-31 19:56:54,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:56:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 237 transitions. [2022-01-31 19:56:54,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:56:54,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:56:54,705 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 19:56:54,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 19:56:54,705 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:56:54,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:56:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1650202032, now seen corresponding path program 37 times [2022-01-31 19:56:54,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:56:54,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347819356] [2022-01-31 19:56:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:56:54,709 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:56:54,709 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:56:54,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:56:54,714 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:56:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:56:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:56:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:56:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:56:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:56:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:56:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:56:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:56:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:56:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:56:56,631 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:56:56,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347819356] [2022-01-31 19:56:56,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1347819356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:56:56,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:56:56,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:56:56,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821484571] [2022-01-31 19:56:56,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:56:56,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:56:56,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:56:56,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:56:56,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:56:56,632 INFO L87 Difference]: Start difference. First operand 173 states and 237 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:01,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:01,415 INFO L93 Difference]: Finished difference Result 262 states and 341 transitions. [2022-01-31 19:57:01,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:57:01,416 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:57:01,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:01,417 INFO L225 Difference]: With dead ends: 262 [2022-01-31 19:57:01,417 INFO L226 Difference]: Without dead ends: 257 [2022-01-31 19:57:01,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2423 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1051, Invalid=9049, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:57:01,417 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 116 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:01,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 154 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 19:57:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-01-31 19:57:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 159. [2022-01-31 19:57:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 135 states have (on average 1.3037037037037038) internal successors, (176), 135 states have internal predecessors, (176), 21 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 19:57:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 216 transitions. [2022-01-31 19:57:01,654 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 216 transitions. Word has length 97 [2022-01-31 19:57:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:01,655 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 216 transitions. [2022-01-31 19:57:01,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 43 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 216 transitions. [2022-01-31 19:57:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:57:01,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:01,655 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 19:57:01,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 19:57:01,656 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:01,656 INFO L85 PathProgramCache]: Analyzing trace with hash 619179466, now seen corresponding path program 38 times [2022-01-31 19:57:01,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:01,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173107654] [2022-01-31 19:57:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:01,661 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:57:01,661 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:57:01,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:01,662 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:03,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:03,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:57:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:57:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:57:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:57:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:57:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:57:03,204 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:03,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173107654] [2022-01-31 19:57:03,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1173107654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:03,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:03,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 19:57:03,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314600487] [2022-01-31 19:57:03,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:03,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 19:57:03,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:03,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 19:57:03,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 19:57:03,206 INFO L87 Difference]: Start difference. First operand 159 states and 216 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:06,137 INFO L93 Difference]: Finished difference Result 266 states and 349 transitions. [2022-01-31 19:57:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 19:57:06,138 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:57:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:06,139 INFO L225 Difference]: With dead ends: 266 [2022-01-31 19:57:06,139 INFO L226 Difference]: Without dead ends: 261 [2022-01-31 19:57:06,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1645 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=494, Invalid=6312, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:57:06,139 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 93 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2995 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:06,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 116 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2995 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:57:06,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-31 19:57:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 183. [2022-01-31 19:57:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 155 states have (on average 1.3225806451612903) internal successors, (205), 155 states have internal predecessors, (205), 25 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:57:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 253 transitions. [2022-01-31 19:57:06,420 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 253 transitions. Word has length 97 [2022-01-31 19:57:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:06,420 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 253 transitions. [2022-01-31 19:57:06,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 253 transitions. [2022-01-31 19:57:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:57:06,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:06,421 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:06,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 19:57:06,421 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:06,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1320779340, now seen corresponding path program 39 times [2022-01-31 19:57:06,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:06,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160386289] [2022-01-31 19:57:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:06,425 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:57:06,425 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:57:06,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:06,427 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:08,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:57:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:08,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:57:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:57:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:57:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:57:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:57:08,387 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:08,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160386289] [2022-01-31 19:57:08,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [160386289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:08,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:08,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:57:08,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50521420] [2022-01-31 19:57:08,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:08,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:57:08,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:57:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1904, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:57:08,388 INFO L87 Difference]: Start difference. First operand 183 states and 253 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:12,931 INFO L93 Difference]: Finished difference Result 278 states and 365 transitions. [2022-01-31 19:57:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 19:57:12,931 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:57:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:12,932 INFO L225 Difference]: With dead ends: 278 [2022-01-31 19:57:12,932 INFO L226 Difference]: Without dead ends: 273 [2022-01-31 19:57:12,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2368 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=844, Invalid=8858, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:57:12,933 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 105 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:12,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 167 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 3203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 19:57:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-31 19:57:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 183. [2022-01-31 19:57:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 155 states have (on average 1.3225806451612903) internal successors, (205), 155 states have internal predecessors, (205), 25 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:57:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 253 transitions. [2022-01-31 19:57:13,217 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 253 transitions. Word has length 97 [2022-01-31 19:57:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:13,217 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 253 transitions. [2022-01-31 19:57:13,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 253 transitions. [2022-01-31 19:57:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:57:13,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:13,218 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:13,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 19:57:13,218 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:13,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1042826188, now seen corresponding path program 40 times [2022-01-31 19:57:13,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:13,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025904822] [2022-01-31 19:57:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:13,221 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:57:13,222 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:57:13,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:13,223 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:14,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:57:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:57:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:57:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:57:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:57:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:57:14,726 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:14,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025904822] [2022-01-31 19:57:14,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2025904822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:14,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:14,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 19:57:14,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145638345] [2022-01-31 19:57:14,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:14,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 19:57:14,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:14,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 19:57:14,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1687, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 19:57:14,727 INFO L87 Difference]: Start difference. First operand 183 states and 253 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:17,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:17,823 INFO L93 Difference]: Finished difference Result 276 states and 366 transitions. [2022-01-31 19:57:17,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 19:57:17,823 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:57:17,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:17,824 INFO L225 Difference]: With dead ends: 276 [2022-01-31 19:57:17,824 INFO L226 Difference]: Without dead ends: 271 [2022-01-31 19:57:17,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1588 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=407, Invalid=6399, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:57:17,825 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 79 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:17,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 151 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 19:57:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-01-31 19:57:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 189. [2022-01-31 19:57:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 160 states have (on average 1.325) internal successors, (212), 160 states have internal predecessors, (212), 26 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:57:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 262 transitions. [2022-01-31 19:57:18,135 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 262 transitions. Word has length 97 [2022-01-31 19:57:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:18,135 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 262 transitions. [2022-01-31 19:57:18,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 262 transitions. [2022-01-31 19:57:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:57:18,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:18,136 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:18,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 19:57:18,136 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1744426062, now seen corresponding path program 41 times [2022-01-31 19:57:18,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:18,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088461392] [2022-01-31 19:57:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:18,141 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:57:18,141 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:57:18,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:18,143 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:20,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:57:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:20,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:57:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:57:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:20,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:57:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:57:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:57:20,180 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:20,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088461392] [2022-01-31 19:57:20,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1088461392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:20,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:20,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:57:20,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193587241] [2022-01-31 19:57:20,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:20,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:57:20,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:20,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:57:20,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1897, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:57:20,181 INFO L87 Difference]: Start difference. First operand 189 states and 262 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:25,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:25,405 INFO L93 Difference]: Finished difference Result 344 states and 467 transitions. [2022-01-31 19:57:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:57:25,405 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:57:25,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:25,406 INFO L225 Difference]: With dead ends: 344 [2022-01-31 19:57:25,406 INFO L226 Difference]: Without dead ends: 339 [2022-01-31 19:57:25,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2583 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1051, Invalid=9455, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 19:57:25,407 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 119 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 2964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:25,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 142 Invalid, 2964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:57:25,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-01-31 19:57:25,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 173. [2022-01-31 19:57:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 147 states have (on average 1.3061224489795917) internal successors, (192), 147 states have internal predecessors, (192), 23 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:57:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 236 transitions. [2022-01-31 19:57:25,681 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 236 transitions. Word has length 97 [2022-01-31 19:57:25,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:25,681 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 236 transitions. [2022-01-31 19:57:25,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 236 transitions. [2022-01-31 19:57:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:57:25,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:25,682 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:25,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 19:57:25,682 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:25,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1409406644, now seen corresponding path program 42 times [2022-01-31 19:57:25,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:25,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395517509] [2022-01-31 19:57:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:25,686 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:57:25,686 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:57:25,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:25,688 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:27,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:57:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:57:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:57:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:57:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:27,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:57:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:57:27,694 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:27,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395517509] [2022-01-31 19:57:27,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [395517509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:27,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:27,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:57:27,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129844260] [2022-01-31 19:57:27,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:27,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:57:27,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:27,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:57:27,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1897, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:57:27,695 INFO L87 Difference]: Start difference. First operand 173 states and 236 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:33,151 INFO L93 Difference]: Finished difference Result 304 states and 404 transitions. [2022-01-31 19:57:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 19:57:33,152 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:57:33,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:33,153 INFO L225 Difference]: With dead ends: 304 [2022-01-31 19:57:33,153 INFO L226 Difference]: Without dead ends: 299 [2022-01-31 19:57:33,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2634 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1097, Invalid=9615, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 19:57:33,154 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 116 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2944 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:33,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 178 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2944 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 19:57:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-31 19:57:33,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 181. [2022-01-31 19:57:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 154 states have (on average 1.3181818181818181) internal successors, (203), 154 states have internal predecessors, (203), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:57:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 249 transitions. [2022-01-31 19:57:33,456 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 249 transitions. Word has length 97 [2022-01-31 19:57:33,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:33,456 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 249 transitions. [2022-01-31 19:57:33,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:33,456 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 249 transitions. [2022-01-31 19:57:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:57:33,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:33,457 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:33,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 19:57:33,457 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash -707806770, now seen corresponding path program 43 times [2022-01-31 19:57:33,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:33,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795017011] [2022-01-31 19:57:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:33,460 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:57:33,461 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:57:33,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:33,462 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:57:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:57:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:57:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:57:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:57:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:57:35,415 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:35,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795017011] [2022-01-31 19:57:35,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [795017011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:35,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:35,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:57:35,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573046390] [2022-01-31 19:57:35,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:35,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:57:35,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:57:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:57:35,416 INFO L87 Difference]: Start difference. First operand 181 states and 249 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:39,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:39,651 INFO L93 Difference]: Finished difference Result 278 states and 366 transitions. [2022-01-31 19:57:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 19:57:39,654 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:57:39,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:39,655 INFO L225 Difference]: With dead ends: 278 [2022-01-31 19:57:39,655 INFO L226 Difference]: Without dead ends: 273 [2022-01-31 19:57:39,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2376 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=857, Invalid=8845, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:57:39,656 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 111 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:39,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 108 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:57:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-31 19:57:39,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 179. [2022-01-31 19:57:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 152 states have (on average 1.3223684210526316) internal successors, (201), 152 states have internal predecessors, (201), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:57:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 247 transitions. [2022-01-31 19:57:39,965 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 247 transitions. Word has length 97 [2022-01-31 19:57:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:39,965 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 247 transitions. [2022-01-31 19:57:39,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:39,965 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 247 transitions. [2022-01-31 19:57:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:57:39,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:39,966 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:39,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 19:57:39,966 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:39,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:39,966 INFO L85 PathProgramCache]: Analyzing trace with hash -985759922, now seen corresponding path program 44 times [2022-01-31 19:57:39,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:39,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284406362] [2022-01-31 19:57:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:39,969 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:57:39,970 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:57:39,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:39,972 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:57:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:57:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:57:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:57:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:57:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:57:41,927 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:41,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284406362] [2022-01-31 19:57:41,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1284406362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:41,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:41,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:57:41,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317993] [2022-01-31 19:57:41,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:41,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:57:41,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:41,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:57:41,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:57:41,928 INFO L87 Difference]: Start difference. First operand 179 states and 247 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:46,322 INFO L93 Difference]: Finished difference Result 273 states and 358 transitions. [2022-01-31 19:57:46,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 19:57:46,322 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:57:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:46,323 INFO L225 Difference]: With dead ends: 273 [2022-01-31 19:57:46,323 INFO L226 Difference]: Without dead ends: 268 [2022-01-31 19:57:46,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2378 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=854, Invalid=8848, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:57:46,324 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 119 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:46,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 117 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:57:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-01-31 19:57:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 173. [2022-01-31 19:57:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 147 states have (on average 1.3129251700680271) internal successors, (193), 147 states have internal predecessors, (193), 23 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:57:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 237 transitions. [2022-01-31 19:57:46,604 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 237 transitions. Word has length 97 [2022-01-31 19:57:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:46,604 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 237 transitions. [2022-01-31 19:57:46,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 237 transitions. [2022-01-31 19:57:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:57:46,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:46,605 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 19:57:46,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 19:57:46,605 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash -284160048, now seen corresponding path program 45 times [2022-01-31 19:57:46,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:46,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528000416] [2022-01-31 19:57:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:46,608 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:57:46,608 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:57:46,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:46,610 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:48,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:48,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:57:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:57:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:48,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:57:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:57:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:48,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:57:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:57:48,292 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:48,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528000416] [2022-01-31 19:57:48,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1528000416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:48,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:48,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 19:57:48,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401287809] [2022-01-31 19:57:48,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:48,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 19:57:48,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:48,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 19:57:48,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1687, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 19:57:48,293 INFO L87 Difference]: Start difference. First operand 173 states and 237 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:51,639 INFO L93 Difference]: Finished difference Result 256 states and 336 transitions. [2022-01-31 19:57:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 19:57:51,639 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:57:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:51,640 INFO L225 Difference]: With dead ends: 256 [2022-01-31 19:57:51,640 INFO L226 Difference]: Without dead ends: 251 [2022-01-31 19:57:51,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1588 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=407, Invalid=6399, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:57:51,641 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 79 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 4034 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 4099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:51,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 203 Invalid, 4099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4034 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 19:57:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-01-31 19:57:51,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 159. [2022-01-31 19:57:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 135 states have (on average 1.3037037037037038) internal successors, (176), 135 states have internal predecessors, (176), 21 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 19:57:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 216 transitions. [2022-01-31 19:57:51,909 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 216 transitions. Word has length 97 [2022-01-31 19:57:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:51,909 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 216 transitions. [2022-01-31 19:57:51,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 216 transitions. [2022-01-31 19:57:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:57:51,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:51,910 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:51,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 19:57:51,910 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:51,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:51,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1714213172, now seen corresponding path program 46 times [2022-01-31 19:57:51,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:51,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141142171] [2022-01-31 19:57:51,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:51,914 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:57:51,915 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:57:51,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:51,916 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:53,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:57:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:53,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:57:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:53,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:57:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:57:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:57:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:57:53,355 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:53,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141142171] [2022-01-31 19:57:53,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1141142171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:53,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:53,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 19:57:53,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330899021] [2022-01-31 19:57:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:53,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 19:57:53,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:53,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 19:57:53,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1687, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 19:57:53,356 INFO L87 Difference]: Start difference. First operand 159 states and 216 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:57:56,636 INFO L93 Difference]: Finished difference Result 266 states and 349 transitions. [2022-01-31 19:57:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 19:57:56,637 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:57:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:57:56,637 INFO L225 Difference]: With dead ends: 266 [2022-01-31 19:57:56,637 INFO L226 Difference]: Without dead ends: 261 [2022-01-31 19:57:56,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1588 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=407, Invalid=6399, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:57:56,638 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 86 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:57:56,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 112 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 19:57:56,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-31 19:57:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 177. [2022-01-31 19:57:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 150 states have (on average 1.32) internal successors, (198), 150 states have internal predecessors, (198), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:57:56,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 244 transitions. [2022-01-31 19:57:56,920 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 244 transitions. Word has length 97 [2022-01-31 19:57:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:57:56,920 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 244 transitions. [2022-01-31 19:57:56,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 41 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:57:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 244 transitions. [2022-01-31 19:57:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:57:56,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:57:56,921 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:57:56,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 19:57:56,921 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:57:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:57:56,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1012613298, now seen corresponding path program 47 times [2022-01-31 19:57:56,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:57:56,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931051301] [2022-01-31 19:57:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:57:56,925 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:57:56,926 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:57:56,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:57:56,927 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:57:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:57:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:57:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:57:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:57:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:57:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:57:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:57:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:57:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:57:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:57:58,887 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:57:58,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931051301] [2022-01-31 19:57:58,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1931051301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:57:58,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:57:58,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:57:58,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963437574] [2022-01-31 19:57:58,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:57:58,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:57:58,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:57:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:57:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:57:58,888 INFO L87 Difference]: Start difference. First operand 177 states and 244 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:03,340 INFO L93 Difference]: Finished difference Result 278 states and 365 transitions. [2022-01-31 19:58:03,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 19:58:03,341 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:58:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:03,342 INFO L225 Difference]: With dead ends: 278 [2022-01-31 19:58:03,342 INFO L226 Difference]: Without dead ends: 273 [2022-01-31 19:58:03,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2372 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=857, Invalid=8845, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:58:03,343 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 103 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:03,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 139 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 19:58:03,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-31 19:58:03,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 177. [2022-01-31 19:58:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 150 states have (on average 1.32) internal successors, (198), 150 states have internal predecessors, (198), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:58:03,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 244 transitions. [2022-01-31 19:58:03,643 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 244 transitions. Word has length 97 [2022-01-31 19:58:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:03,643 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 244 transitions. [2022-01-31 19:58:03,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:03,643 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 244 transitions. [2022-01-31 19:58:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:58:03,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:03,644 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:58:03,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 19:58:03,644 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:03,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1290566450, now seen corresponding path program 48 times [2022-01-31 19:58:03,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:03,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660143823] [2022-01-31 19:58:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:03,647 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:58:03,647 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:58:03,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:03,649 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:05,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:05,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:58:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:05,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:58:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:05,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:58:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:58:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:05,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:58:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:58:05,612 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:05,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660143823] [2022-01-31 19:58:05,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [660143823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:05,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:05,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:58:05,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753340105] [2022-01-31 19:58:05,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:05,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:58:05,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:58:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1905, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:58:05,613 INFO L87 Difference]: Start difference. First operand 177 states and 244 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:10,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:10,348 INFO L93 Difference]: Finished difference Result 294 states and 386 transitions. [2022-01-31 19:58:10,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:58:10,348 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:58:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:10,349 INFO L225 Difference]: With dead ends: 294 [2022-01-31 19:58:10,349 INFO L226 Difference]: Without dead ends: 289 [2022-01-31 19:58:10,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2577 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=907, Invalid=9599, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 19:58:10,350 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 106 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:10,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 135 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:58:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-01-31 19:58:10,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 185. [2022-01-31 19:58:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 157 states have (on average 1.3248407643312101) internal successors, (208), 157 states have internal predecessors, (208), 25 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:58:10,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 256 transitions. [2022-01-31 19:58:10,665 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 256 transitions. Word has length 97 [2022-01-31 19:58:10,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:10,665 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 256 transitions. [2022-01-31 19:58:10,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 256 transitions. [2022-01-31 19:58:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:58:10,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:10,666 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 19:58:10,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 19:58:10,666 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:10,666 INFO L85 PathProgramCache]: Analyzing trace with hash -588966576, now seen corresponding path program 49 times [2022-01-31 19:58:10,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:10,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59762143] [2022-01-31 19:58:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:10,672 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:58:10,672 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:58:10,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:10,674 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:12,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:12,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:58:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:58:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:58:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:58:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:12,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:58:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:58:12,620 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:12,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59762143] [2022-01-31 19:58:12,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [59762143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:12,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:12,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:58:12,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104650945] [2022-01-31 19:58:12,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:12,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:58:12,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:12,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:58:12,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1906, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:58:12,622 INFO L87 Difference]: Start difference. First operand 185 states and 256 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:17,217 INFO L93 Difference]: Finished difference Result 279 states and 369 transitions. [2022-01-31 19:58:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 19:58:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:58:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:17,218 INFO L225 Difference]: With dead ends: 279 [2022-01-31 19:58:17,218 INFO L226 Difference]: Without dead ends: 274 [2022-01-31 19:58:17,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=885, Invalid=9215, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:58:17,219 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 103 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:17,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 137 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:58:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-31 19:58:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 177. [2022-01-31 19:58:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 150 states have (on average 1.32) internal successors, (198), 150 states have internal predecessors, (198), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:58:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 244 transitions. [2022-01-31 19:58:17,511 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 244 transitions. Word has length 97 [2022-01-31 19:58:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:17,512 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 244 transitions. [2022-01-31 19:58:17,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 244 transitions. [2022-01-31 19:58:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:58:17,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:17,512 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:58:17,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 19:58:17,512 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:17,513 INFO L85 PathProgramCache]: Analyzing trace with hash 552168014, now seen corresponding path program 50 times [2022-01-31 19:58:17,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:17,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228103706] [2022-01-31 19:58:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:17,518 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:58:17,519 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:58:17,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:17,520 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:19,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:58:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:58:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:58:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:58:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:19,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:58:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:58:19,413 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:19,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228103706] [2022-01-31 19:58:19,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [228103706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:19,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:19,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:58:19,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994342404] [2022-01-31 19:58:19,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:19,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:58:19,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:19,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:58:19,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:58:19,415 INFO L87 Difference]: Start difference. First operand 177 states and 244 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:23,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:23,944 INFO L93 Difference]: Finished difference Result 284 states and 374 transitions. [2022-01-31 19:58:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 19:58:23,944 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:58:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:23,945 INFO L225 Difference]: With dead ends: 284 [2022-01-31 19:58:23,945 INFO L226 Difference]: Without dead ends: 279 [2022-01-31 19:58:23,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2374 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=854, Invalid=8848, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:58:23,946 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 100 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:23,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 152 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:58:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-01-31 19:58:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 183. [2022-01-31 19:58:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 155 states have (on average 1.3225806451612903) internal successors, (205), 155 states have internal predecessors, (205), 25 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:58:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 253 transitions. [2022-01-31 19:58:24,257 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 253 transitions. Word has length 97 [2022-01-31 19:58:24,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:24,257 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 253 transitions. [2022-01-31 19:58:24,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:24,257 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 253 transitions. [2022-01-31 19:58:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:58:24,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:24,258 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 19:58:24,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 19:58:24,258 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:24,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:24,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1253767888, now seen corresponding path program 51 times [2022-01-31 19:58:24,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:24,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474856997] [2022-01-31 19:58:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:24,261 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:58:24,262 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:58:24,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:24,263 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:58:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:58:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:58:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:58:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:58:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:58:26,148 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:26,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474856997] [2022-01-31 19:58:26,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1474856997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:26,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:26,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:58:26,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808979736] [2022-01-31 19:58:26,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:26,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:58:26,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:26,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:58:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1899, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:58:26,150 INFO L87 Difference]: Start difference. First operand 183 states and 253 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:30,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:30,364 INFO L93 Difference]: Finished difference Result 283 states and 373 transitions. [2022-01-31 19:58:30,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 19:58:30,364 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:58:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:30,365 INFO L225 Difference]: With dead ends: 283 [2022-01-31 19:58:30,365 INFO L226 Difference]: Without dead ends: 278 [2022-01-31 19:58:30,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=860, Invalid=8842, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:58:30,366 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 105 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:30,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 133 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:58:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-31 19:58:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 177. [2022-01-31 19:58:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 150 states have (on average 1.32) internal successors, (198), 150 states have internal predecessors, (198), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:58:30,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 244 transitions. [2022-01-31 19:58:30,660 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 244 transitions. Word has length 97 [2022-01-31 19:58:30,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:30,661 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 244 transitions. [2022-01-31 19:58:30,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:30,661 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 244 transitions. [2022-01-31 19:58:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:58:30,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:30,661 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 19:58:30,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 19:58:30,661 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:30,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:30,662 INFO L85 PathProgramCache]: Analyzing trace with hash 975814736, now seen corresponding path program 52 times [2022-01-31 19:58:30,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:30,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898498807] [2022-01-31 19:58:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:30,664 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:58:30,664 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:58:30,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:30,665 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:58:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:58:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:58:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:58:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:58:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:58:32,679 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:32,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898498807] [2022-01-31 19:58:32,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1898498807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:32,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:32,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:58:32,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38192631] [2022-01-31 19:58:32,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:32,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:58:32,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:58:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1897, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:58:32,680 INFO L87 Difference]: Start difference. First operand 177 states and 244 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:37,765 INFO L93 Difference]: Finished difference Result 324 states and 435 transitions. [2022-01-31 19:58:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:58:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:58:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:37,766 INFO L225 Difference]: With dead ends: 324 [2022-01-31 19:58:37,766 INFO L226 Difference]: Without dead ends: 319 [2022-01-31 19:58:37,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2572 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1069, Invalid=9437, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 19:58:37,767 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 109 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:37,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 149 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 19:58:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-01-31 19:58:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 201. [2022-01-31 19:58:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 170 states have (on average 1.3470588235294119) internal successors, (229), 170 states have internal predecessors, (229), 28 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:58:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 283 transitions. [2022-01-31 19:58:38,116 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 283 transitions. Word has length 97 [2022-01-31 19:58:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:38,116 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 283 transitions. [2022-01-31 19:58:38,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:38,116 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 283 transitions. [2022-01-31 19:58:38,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 19:58:38,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:38,119 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:58:38,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 19:58:38,119 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1677414610, now seen corresponding path program 5 times [2022-01-31 19:58:38,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:38,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755336808] [2022-01-31 19:58:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:38,121 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:58:38,121 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:58:38,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:38,123 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:40,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:40,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:40,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:40,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:58:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:58:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:58:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:58:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:40,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:58:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:58:40,111 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:40,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755336808] [2022-01-31 19:58:40,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1755336808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:40,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:40,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:58:40,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455078328] [2022-01-31 19:58:40,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:40,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:58:40,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:40,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:58:40,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1897, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:58:40,112 INFO L87 Difference]: Start difference. First operand 201 states and 283 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:45,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:45,212 INFO L93 Difference]: Finished difference Result 314 states and 421 transitions. [2022-01-31 19:58:45,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:58:45,212 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 97 [2022-01-31 19:58:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:45,213 INFO L225 Difference]: With dead ends: 314 [2022-01-31 19:58:45,213 INFO L226 Difference]: Without dead ends: 309 [2022-01-31 19:58:45,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2575 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1067, Invalid=9439, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 19:58:45,214 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 124 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:45,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 150 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 19:58:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-31 19:58:45,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 195. [2022-01-31 19:58:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 165 states have (on average 1.3454545454545455) internal successors, (222), 165 states have internal predecessors, (222), 27 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 19:58:45,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 274 transitions. [2022-01-31 19:58:45,548 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 274 transitions. Word has length 97 [2022-01-31 19:58:45,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:45,548 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 274 transitions. [2022-01-31 19:58:45,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 44 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-01-31 19:58:45,548 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 274 transitions. [2022-01-31 19:58:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-31 19:58:45,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:45,549 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:58:45,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 19:58:45,549 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:45,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:45,549 INFO L85 PathProgramCache]: Analyzing trace with hash -490910106, now seen corresponding path program 14 times [2022-01-31 19:58:45,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:45,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248364397] [2022-01-31 19:58:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:45,551 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:58:45,551 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:58:45,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:45,553 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:45,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:45,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:45,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:45,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:58:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:45,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:58:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:45,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:58:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:58:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:45,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:58:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 19:58:45,653 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:45,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248364397] [2022-01-31 19:58:45,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1248364397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:45,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:45,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 19:58:45,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358292714] [2022-01-31 19:58:45,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:45,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 19:58:45,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:45,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 19:58:45,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-31 19:58:45,654 INFO L87 Difference]: Start difference. First operand 195 states and 274 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-31 19:58:46,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:46,561 INFO L93 Difference]: Finished difference Result 283 states and 382 transitions. [2022-01-31 19:58:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 19:58:46,561 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 99 [2022-01-31 19:58:46,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:46,562 INFO L225 Difference]: With dead ends: 283 [2022-01-31 19:58:46,562 INFO L226 Difference]: Without dead ends: 240 [2022-01-31 19:58:46,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:58:46,563 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 211 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:46,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 49 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:58:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-01-31 19:58:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 216. [2022-01-31 19:58:47,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 185 states have (on average 1.308108108108108) internal successors, (242), 185 states have internal predecessors, (242), 28 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:58:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 296 transitions. [2022-01-31 19:58:47,013 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 296 transitions. Word has length 99 [2022-01-31 19:58:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:47,013 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 296 transitions. [2022-01-31 19:58:47,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-31 19:58:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 296 transitions. [2022-01-31 19:58:47,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-31 19:58:47,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:47,014 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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 19:58:47,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 19:58:47,014 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:47,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash 111409658, now seen corresponding path program 53 times [2022-01-31 19:58:47,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:47,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712372020] [2022-01-31 19:58:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:47,019 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:58:47,019 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:58:47,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:47,021 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:47,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:47,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:47,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:58:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:47,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:58:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:47,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:58:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:58:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:58:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:47,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:58:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 19:58:47,129 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712372020] [2022-01-31 19:58:47,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1712372020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:47,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:47,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 19:58:47,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343749911] [2022-01-31 19:58:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:47,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 19:58:47,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:47,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 19:58:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-01-31 19:58:47,130 INFO L87 Difference]: Start difference. First operand 216 states and 296 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 8 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-01-31 19:58:47,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:47,852 INFO L93 Difference]: Finished difference Result 223 states and 303 transitions. [2022-01-31 19:58:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 19:58:47,853 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 8 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 107 [2022-01-31 19:58:47,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:47,853 INFO L225 Difference]: With dead ends: 223 [2022-01-31 19:58:47,854 INFO L226 Difference]: Without dead ends: 206 [2022-01-31 19:58:47,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 19:58:47,854 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 133 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:47,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 64 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:58:47,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-01-31 19:58:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 84. [2022-01-31 19:58:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 11 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:58:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2022-01-31 19:58:48,027 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 107 [2022-01-31 19:58:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:48,027 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-01-31 19:58:48,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 8 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-01-31 19:58:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2022-01-31 19:58:48,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 19:58:48,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:48,027 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:58:48,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 19:58:48,027 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:48,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1491729292, now seen corresponding path program 15 times [2022-01-31 19:58:48,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:48,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287589151] [2022-01-31 19:58:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:48,029 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:58:48,029 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:58:48,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:48,031 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:58:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:49,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:58:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:58:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:49,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:58:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:58:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:58:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 19:58:49,874 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:49,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287589151] [2022-01-31 19:58:49,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1287589151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:49,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:49,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 19:58:49,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776331349] [2022-01-31 19:58:49,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:49,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 19:58:49,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:49,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 19:58:49,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2218, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 19:58:49,875 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 47 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:58:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:58:53,497 INFO L93 Difference]: Finished difference Result 163 states and 205 transitions. [2022-01-31 19:58:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 19:58:53,497 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 47 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 19:58:53,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:58:53,498 INFO L225 Difference]: With dead ends: 163 [2022-01-31 19:58:53,498 INFO L226 Difference]: Without dead ends: 158 [2022-01-31 19:58:53,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2042 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=462, Invalid=8468, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 19:58:53,499 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 86 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4038 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 4115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 4038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:58:53,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 117 Invalid, 4115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 4038 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 19:58:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-01-31 19:58:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 137. [2022-01-31 19:58:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 117 states have (on average 1.2478632478632479) internal successors, (146), 117 states have internal predecessors, (146), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:58:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 178 transitions. [2022-01-31 19:58:53,812 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 178 transitions. Word has length 111 [2022-01-31 19:58:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:58:53,812 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 178 transitions. [2022-01-31 19:58:53,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 47 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:58:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 178 transitions. [2022-01-31 19:58:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 19:58:53,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:58:53,813 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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 19:58:53,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 19:58:53,813 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:58:53,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:58:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1959232502, now seen corresponding path program 54 times [2022-01-31 19:58:53,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:58:53,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038660754] [2022-01-31 19:58:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:58:53,828 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:58:53,828 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:58:53,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:58:53,830 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:58:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:58:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:58:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:58:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:58:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:58:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:56,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:58:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:56,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:58:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:58:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:56,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:58:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:58:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 19:58:56,435 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:58:56,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038660754] [2022-01-31 19:58:56,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1038660754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:58:56,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:58:56,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:58:56,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292139155] [2022-01-31 19:58:56,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:58:56,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:58:56,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:58:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:58:56,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2453, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:58:56,436 INFO L87 Difference]: Start difference. First operand 137 states and 178 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:02,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:02,703 INFO L93 Difference]: Finished difference Result 194 states and 241 transitions. [2022-01-31 19:59:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 19:59:02,704 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 19:59:02,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:02,705 INFO L225 Difference]: With dead ends: 194 [2022-01-31 19:59:02,705 INFO L226 Difference]: Without dead ends: 189 [2022-01-31 19:59:02,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1082, Invalid=12028, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 19:59:02,707 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 105 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 4070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:02,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 191 Invalid, 4070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3914 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 19:59:02,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-01-31 19:59:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 137. [2022-01-31 19:59:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 117 states have (on average 1.2478632478632479) internal successors, (146), 117 states have internal predecessors, (146), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:59:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 178 transitions. [2022-01-31 19:59:03,031 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 178 transitions. Word has length 111 [2022-01-31 19:59:03,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:03,031 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 178 transitions. [2022-01-31 19:59:03,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 178 transitions. [2022-01-31 19:59:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 19:59:03,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:03,032 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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 19:59:03,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 19:59:03,032 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash -598242954, now seen corresponding path program 55 times [2022-01-31 19:59:03,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:03,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271971150] [2022-01-31 19:59:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:03,035 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:59:03,035 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:59:03,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:03,036 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:05,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:05,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:05,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:59:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:59:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:05,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:59:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:59:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:59:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:05,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:59:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 19:59:05,579 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:05,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271971150] [2022-01-31 19:59:05,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1271971150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:05,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:05,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:59:05,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228480040] [2022-01-31 19:59:05,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:05,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:59:05,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:05,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:59:05,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2435, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:59:05,580 INFO L87 Difference]: Start difference. First operand 137 states and 178 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:10,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:10,956 INFO L93 Difference]: Finished difference Result 204 states and 255 transitions. [2022-01-31 19:59:10,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 19:59:10,956 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 19:59:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:10,957 INFO L225 Difference]: With dead ends: 204 [2022-01-31 19:59:10,957 INFO L226 Difference]: Without dead ends: 199 [2022-01-31 19:59:10,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3382 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1079, Invalid=12031, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 19:59:10,958 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 137 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3149 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 3149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:10,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 125 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 3149 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 19:59:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-01-31 19:59:11,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 151. [2022-01-31 19:59:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 129 states have (on average 1.2713178294573644) internal successors, (164), 129 states have internal predecessors, (164), 19 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 19:59:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 200 transitions. [2022-01-31 19:59:11,337 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 200 transitions. Word has length 111 [2022-01-31 19:59:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:11,338 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 200 transitions. [2022-01-31 19:59:11,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 200 transitions. [2022-01-31 19:59:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 19:59:11,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:11,338 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:59:11,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 19:59:11,338 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:11,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1442248456, now seen corresponding path program 56 times [2022-01-31 19:59:11,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:11,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173787336] [2022-01-31 19:59:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:11,342 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:59:11,342 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:59:11,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:11,343 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:13,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:13,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:59:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:13,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:59:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:59:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:59:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:59:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:59:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 19:59:13,888 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:13,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173787336] [2022-01-31 19:59:13,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [173787336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:13,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:13,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:59:13,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416755020] [2022-01-31 19:59:13,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:13,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:59:13,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:59:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2453, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:59:13,889 INFO L87 Difference]: Start difference. First operand 151 states and 200 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:19,861 INFO L93 Difference]: Finished difference Result 204 states and 258 transitions. [2022-01-31 19:59:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 19:59:19,862 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 19:59:19,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:19,863 INFO L225 Difference]: With dead ends: 204 [2022-01-31 19:59:19,863 INFO L226 Difference]: Without dead ends: 199 [2022-01-31 19:59:19,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3216 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1088, Invalid=12022, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 19:59:19,864 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 105 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 3721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:19,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 163 Invalid, 3875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 3721 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 19:59:19,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-01-31 19:59:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 145. [2022-01-31 19:59:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 124 states have (on average 1.2580645161290323) internal successors, (156), 124 states have internal predecessors, (156), 18 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 19:59:20,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 190 transitions. [2022-01-31 19:59:20,226 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 190 transitions. Word has length 111 [2022-01-31 19:59:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:20,226 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 190 transitions. [2022-01-31 19:59:20,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:20,227 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 190 transitions. [2022-01-31 19:59:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 19:59:20,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:20,227 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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 19:59:20,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 19:59:20,227 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:20,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash -104943882, now seen corresponding path program 57 times [2022-01-31 19:59:20,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:20,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961927060] [2022-01-31 19:59:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:20,233 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:59:20,233 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:59:20,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:20,234 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:59:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:59:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:59:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:59:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:59:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:59:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 19:59:22,907 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:22,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961927060] [2022-01-31 19:59:22,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [961927060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:22,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:22,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:59:22,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033427107] [2022-01-31 19:59:22,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:22,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:59:22,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:22,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:59:22,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:59:22,908 INFO L87 Difference]: Start difference. First operand 145 states and 190 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:29,921 INFO L93 Difference]: Finished difference Result 323 states and 423 transitions. [2022-01-31 19:59:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 19:59:29,922 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 19:59:29,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:29,923 INFO L225 Difference]: With dead ends: 323 [2022-01-31 19:59:29,923 INFO L226 Difference]: Without dead ends: 318 [2022-01-31 19:59:29,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3495 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1439, Invalid=12603, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 19:59:29,924 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 138 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:29,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 166 Invalid, 3641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 19:59:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-31 19:59:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 207. [2022-01-31 19:59:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 177 states have (on average 1.3163841807909604) internal successors, (233), 177 states have internal predecessors, (233), 27 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 19:59:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 285 transitions. [2022-01-31 19:59:30,534 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 285 transitions. Word has length 111 [2022-01-31 19:59:30,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:30,534 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 285 transitions. [2022-01-31 19:59:30,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:30,534 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 285 transitions. [2022-01-31 19:59:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 19:59:30,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:30,535 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:59:30,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 19:59:30,535 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:30,535 INFO L85 PathProgramCache]: Analyzing trace with hash -948949384, now seen corresponding path program 58 times [2022-01-31 19:59:30,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:30,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032295373] [2022-01-31 19:59:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:30,538 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:59:30,538 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:59:30,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:30,540 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:59:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:59:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:33,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:59:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:33,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:59:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:33,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:59:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:33,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:59:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 19:59:33,184 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:33,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032295373] [2022-01-31 19:59:33,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2032295373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:33,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:33,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:59:33,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217031603] [2022-01-31 19:59:33,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:33,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:59:33,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:59:33,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2444, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:59:33,186 INFO L87 Difference]: Start difference. First operand 207 states and 285 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:39,884 INFO L93 Difference]: Finished difference Result 315 states and 415 transitions. [2022-01-31 19:59:39,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 19:59:39,885 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 19:59:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:39,886 INFO L225 Difference]: With dead ends: 315 [2022-01-31 19:59:39,886 INFO L226 Difference]: Without dead ends: 310 [2022-01-31 19:59:39,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3356 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1259, Invalid=12313, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 19:59:39,887 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 115 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3485 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 3658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:39,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 176 Invalid, 3658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 3485 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 19:59:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-01-31 19:59:40,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 211. [2022-01-31 19:59:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 180 states have (on average 1.3277777777777777) internal successors, (239), 180 states have internal predecessors, (239), 28 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:59:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 293 transitions. [2022-01-31 19:59:40,547 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 293 transitions. Word has length 111 [2022-01-31 19:59:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:40,547 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 293 transitions. [2022-01-31 19:59:40,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 293 transitions. [2022-01-31 19:59:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 19:59:40,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:40,548 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:59:40,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 19:59:40,548 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash 788542456, now seen corresponding path program 59 times [2022-01-31 19:59:40,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:40,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688758506] [2022-01-31 19:59:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:40,551 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:59:40,551 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:59:40,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:40,553 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:43,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:43,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:43,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:59:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:59:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:43,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:59:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:59:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:59:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:43,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:59:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 19:59:43,073 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:43,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688758506] [2022-01-31 19:59:43,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1688758506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:43,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:43,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:59:43,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221074688] [2022-01-31 19:59:43,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:43,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:59:43,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:43,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:59:43,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2449, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:59:43,081 INFO L87 Difference]: Start difference. First operand 211 states and 293 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:49,431 INFO L93 Difference]: Finished difference Result 295 states and 385 transitions. [2022-01-31 19:59:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 19:59:49,432 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 19:59:49,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:49,433 INFO L225 Difference]: With dead ends: 295 [2022-01-31 19:59:49,433 INFO L226 Difference]: Without dead ends: 290 [2022-01-31 19:59:49,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1051, Invalid=11605, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 19:59:49,434 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 110 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 3800 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 3940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 3800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:49,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 158 Invalid, 3940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 3800 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 19:59:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-01-31 19:59:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 211. [2022-01-31 19:59:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 180 states have (on average 1.3277777777777777) internal successors, (239), 180 states have internal predecessors, (239), 28 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:59:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 293 transitions. [2022-01-31 19:59:50,079 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 293 transitions. Word has length 111 [2022-01-31 19:59:50,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:50,079 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 293 transitions. [2022-01-31 19:59:50,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 293 transitions. [2022-01-31 19:59:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 19:59:50,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:50,080 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:59:50,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 19:59:50,080 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:50,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:50,081 INFO L85 PathProgramCache]: Analyzing trace with hash -55463046, now seen corresponding path program 60 times [2022-01-31 19:59:50,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:50,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395951710] [2022-01-31 19:59:50,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:50,086 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:59:50,086 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:59:50,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:50,088 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:59:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:52,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:59:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 19:59:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:52,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:59:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:52,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:59:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:59:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:52,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:59:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:52,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:59:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:52,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:59:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:59:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 19:59:52,716 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:59:52,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395951710] [2022-01-31 19:59:52,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [395951710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:59:52,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:59:52,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:59:52,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887232283] [2022-01-31 19:59:52,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:59:52,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:59:52,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:59:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:59:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2442, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:59:52,717 INFO L87 Difference]: Start difference. First operand 211 states and 293 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:58,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:59:58,850 INFO L93 Difference]: Finished difference Result 293 states and 382 transitions. [2022-01-31 19:59:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 19:59:58,851 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 19:59:58,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:59:58,852 INFO L225 Difference]: With dead ends: 293 [2022-01-31 19:59:58,852 INFO L226 Difference]: Without dead ends: 288 [2022-01-31 19:59:58,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3284 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1050, Invalid=11606, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 19:59:58,853 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 112 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:59:58,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 167 Invalid, 3761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 3579 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 19:59:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-01-31 19:59:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 203. [2022-01-31 19:59:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 173 states have (on average 1.323699421965318) internal successors, (229), 173 states have internal predecessors, (229), 27 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 19:59:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 281 transitions. [2022-01-31 19:59:59,491 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 281 transitions. Word has length 111 [2022-01-31 19:59:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:59:59,491 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 281 transitions. [2022-01-31 19:59:59,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 19:59:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 281 transitions. [2022-01-31 19:59:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 19:59:59,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:59:59,491 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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 19:59:59,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 19:59:59,492 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:59:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:59:59,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1117058166, now seen corresponding path program 61 times [2022-01-31 19:59:59,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:59:59,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915773013] [2022-01-31 19:59:59,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:59:59,505 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:59:59,505 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 19:59:59,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:59:59,507 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:59:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:02,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:00:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:00:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:00:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:00:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:00:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:02,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:00:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:02,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:00:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:02,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:00:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:02,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:00:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:00:02,218 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:00:02,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915773013] [2022-01-31 20:00:02,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [915773013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:00:02,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:00:02,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:00:02,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837062994] [2022-01-31 20:00:02,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:00:02,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:00:02,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:00:02,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:00:02,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2453, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:00:02,219 INFO L87 Difference]: Start difference. First operand 203 states and 281 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:09,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:00:09,097 INFO L93 Difference]: Finished difference Result 346 states and 465 transitions. [2022-01-31 20:00:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 20:00:09,098 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:00:09,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:00:09,099 INFO L225 Difference]: With dead ends: 346 [2022-01-31 20:00:09,099 INFO L226 Difference]: Without dead ends: 341 [2022-01-31 20:00:09,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3108 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1058, Invalid=11824, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 20:00:09,100 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 113 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 3959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:00:09,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 158 Invalid, 3959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 3807 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 20:00:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-01-31 20:00:09,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 215. [2022-01-31 20:00:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 183 states have (on average 1.3278688524590163) internal successors, (243), 183 states have internal predecessors, (243), 29 states have call successors, (29), 4 states have call predecessors, (29), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 20:00:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 299 transitions. [2022-01-31 20:00:09,763 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 299 transitions. Word has length 111 [2022-01-31 20:00:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:00:09,763 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 299 transitions. [2022-01-31 20:00:09,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:09,763 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 299 transitions. [2022-01-31 20:00:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:00:09,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:00:09,764 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:00:09,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 20:00:09,764 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:00:09,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:00:09,765 INFO L85 PathProgramCache]: Analyzing trace with hash 273052664, now seen corresponding path program 62 times [2022-01-31 20:00:09,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:00:09,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546389106] [2022-01-31 20:00:09,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:00:09,773 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:00:09,774 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:00:09,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:00:09,775 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:00:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:12,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:00:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:12,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:00:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:00:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:00:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:00:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:12,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:00:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:00:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:12,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:00:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:00:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:00:12,398 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:00:12,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546389106] [2022-01-31 20:00:12,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [546389106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:00:12,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:00:12,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:00:12,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364703717] [2022-01-31 20:00:12,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:00:12,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:00:12,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:00:12,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:00:12,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:00:12,399 INFO L87 Difference]: Start difference. First operand 215 states and 299 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:00:20,002 INFO L93 Difference]: Finished difference Result 386 states and 531 transitions. [2022-01-31 20:00:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 20:00:20,002 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:00:20,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:00:20,003 INFO L225 Difference]: With dead ends: 386 [2022-01-31 20:00:20,004 INFO L226 Difference]: Without dead ends: 381 [2022-01-31 20:00:20,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3507 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1445, Invalid=12597, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 20:00:20,005 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 142 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:00:20,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 151 Invalid, 3447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 20:00:20,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-01-31 20:00:20,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 261. [2022-01-31 20:00:20,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 222 states have (on average 1.3693693693693694) internal successors, (304), 222 states have internal predecessors, (304), 36 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 20:00:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 374 transitions. [2022-01-31 20:00:20,967 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 374 transitions. Word has length 111 [2022-01-31 20:00:20,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:00:20,967 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 374 transitions. [2022-01-31 20:00:20,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:20,968 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 374 transitions. [2022-01-31 20:00:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:00:20,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:00:20,968 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:00:20,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 20:00:20,968 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:00:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:00:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2010544504, now seen corresponding path program 63 times [2022-01-31 20:00:20,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:00:20,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981325478] [2022-01-31 20:00:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:00:20,972 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:00:20,972 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:00:20,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:00:20,974 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:00:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:00:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:00:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:00:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:00:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:00:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:00:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:00:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:00:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:00:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:00:23,628 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:00:23,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981325478] [2022-01-31 20:00:23,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981325478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:00:23,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:00:23,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 20:00:23,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513336322] [2022-01-31 20:00:23,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:00:23,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 20:00:23,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:00:23,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 20:00:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2546, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 20:00:23,629 INFO L87 Difference]: Start difference. First operand 261 states and 374 transitions. Second operand has 53 states, 53 states have (on average 1.320754716981132) internal successors, (70), 51 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:30,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:00:30,114 INFO L93 Difference]: Finished difference Result 349 states and 473 transitions. [2022-01-31 20:00:30,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 20:00:30,114 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.320754716981132) internal successors, (70), 51 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:00:30,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:00:30,115 INFO L225 Difference]: With dead ends: 349 [2022-01-31 20:00:30,116 INFO L226 Difference]: Without dead ends: 344 [2022-01-31 20:00:30,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1066, Invalid=11816, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 20:00:30,116 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 117 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 3510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 20:00:30,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 134 Invalid, 3510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 20:00:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-01-31 20:00:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 265. [2022-01-31 20:00:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 225 states have (on average 1.3733333333333333) internal successors, (309), 225 states have internal predecessors, (309), 37 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 20:00:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 381 transitions. [2022-01-31 20:00:31,042 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 381 transitions. Word has length 111 [2022-01-31 20:00:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:00:31,042 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 381 transitions. [2022-01-31 20:00:31,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.320754716981132) internal successors, (70), 51 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 381 transitions. [2022-01-31 20:00:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:00:31,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:00:31,044 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:00:31,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 20:00:31,044 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:00:31,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:00:31,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1166539002, now seen corresponding path program 64 times [2022-01-31 20:00:31,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:00:31,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781528008] [2022-01-31 20:00:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:00:31,047 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:00:31,047 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:00:31,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:00:31,049 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:00:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:33,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:00:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:00:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:33,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:00:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:00:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:00:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:33,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:00:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:33,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:00:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:33,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:00:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:33,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:00:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:00:33,101 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:00:33,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781528008] [2022-01-31 20:00:33,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1781528008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:00:33,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:00:33,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 20:00:33,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680942693] [2022-01-31 20:00:33,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:00:33,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 20:00:33,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:00:33,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 20:00:33,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2310, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 20:00:33,102 INFO L87 Difference]: Start difference. First operand 265 states and 381 transitions. Second operand has 50 states, 50 states have (on average 1.4) internal successors, (70), 48 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:00:38,142 INFO L93 Difference]: Finished difference Result 344 states and 471 transitions. [2022-01-31 20:00:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 20:00:38,142 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.4) internal successors, (70), 48 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:00:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:00:38,143 INFO L225 Difference]: With dead ends: 344 [2022-01-31 20:00:38,143 INFO L226 Difference]: Without dead ends: 339 [2022-01-31 20:00:38,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2164 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=473, Invalid=8647, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 20:00:38,144 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 80 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4930 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 4997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 20:00:38,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 218 Invalid, 4997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4930 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 20:00:38,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-01-31 20:00:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 265. [2022-01-31 20:00:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 225 states have (on average 1.3733333333333333) internal successors, (309), 225 states have internal predecessors, (309), 37 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 20:00:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 381 transitions. [2022-01-31 20:00:39,042 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 381 transitions. Word has length 111 [2022-01-31 20:00:39,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:00:39,042 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 381 transitions. [2022-01-31 20:00:39,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.4) internal successors, (70), 48 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 381 transitions. [2022-01-31 20:00:39,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:00:39,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:00:39,043 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:00:39,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 20:00:39,043 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:00:39,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:00:39,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1791123720, now seen corresponding path program 65 times [2022-01-31 20:00:39,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:00:39,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938934711] [2022-01-31 20:00:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:00:39,047 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:00:39,047 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:00:39,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:00:39,048 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:00:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:00:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:41,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:00:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:00:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:00:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:41,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:00:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:00:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:41,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:00:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:41,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:00:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:41,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:00:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:00:41,618 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:00:41,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938934711] [2022-01-31 20:00:41,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [938934711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:00:41,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:00:41,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:00:41,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94048944] [2022-01-31 20:00:41,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:00:41,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:00:41,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:00:41,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:00:41,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2420, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:00:41,619 INFO L87 Difference]: Start difference. First operand 265 states and 381 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:49,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:00:49,527 INFO L93 Difference]: Finished difference Result 401 states and 545 transitions. [2022-01-31 20:00:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 20:00:49,527 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:00:49,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:00:49,528 INFO L225 Difference]: With dead ends: 401 [2022-01-31 20:00:49,528 INFO L226 Difference]: Without dead ends: 396 [2022-01-31 20:00:49,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4134 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1474, Invalid=13778, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 20:00:49,529 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 122 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 3788 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 3971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 3788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:00:49,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 167 Invalid, 3971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 3788 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 20:00:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-01-31 20:00:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 257. [2022-01-31 20:00:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 218 states have (on average 1.3669724770642202) internal successors, (298), 218 states have internal predecessors, (298), 36 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 20:00:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 368 transitions. [2022-01-31 20:00:50,431 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 368 transitions. Word has length 111 [2022-01-31 20:00:50,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:00:50,432 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 368 transitions. [2022-01-31 20:00:50,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 368 transitions. [2022-01-31 20:00:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:00:50,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:00:50,432 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:00:50,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 20:00:50,433 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:00:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:00:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1659838074, now seen corresponding path program 66 times [2022-01-31 20:00:50,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:00:50,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649536599] [2022-01-31 20:00:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:00:50,436 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:00:50,436 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:00:50,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:00:50,438 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:00:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:00:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:52,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:00:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:52,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:00:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:52,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:00:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:52,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:00:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:52,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:00:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:52,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:00:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:00:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:00:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:00:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:00:52,980 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:00:52,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649536599] [2022-01-31 20:00:52,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [649536599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:00:52,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:00:52,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:00:52,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028520164] [2022-01-31 20:00:52,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:00:52,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:00:52,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:00:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:00:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2450, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:00:52,981 INFO L87 Difference]: Start difference. First operand 257 states and 368 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:00:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:00:59,713 INFO L93 Difference]: Finished difference Result 346 states and 469 transitions. [2022-01-31 20:00:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 20:00:59,713 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:00:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:00:59,714 INFO L225 Difference]: With dead ends: 346 [2022-01-31 20:00:59,714 INFO L226 Difference]: Without dead ends: 341 [2022-01-31 20:00:59,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3206 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1085, Invalid=12025, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 20:00:59,715 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 105 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 3608 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:00:59,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 168 Invalid, 3761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3608 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 20:00:59,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-01-31 20:01:00,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 251. [2022-01-31 20:01:00,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 213 states have (on average 1.3661971830985915) internal successors, (291), 213 states have internal predecessors, (291), 35 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 20:01:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 359 transitions. [2022-01-31 20:01:00,577 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 359 transitions. Word has length 111 [2022-01-31 20:01:00,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:01:00,577 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 359 transitions. [2022-01-31 20:01:00,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:00,578 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 359 transitions. [2022-01-31 20:01:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:01:00,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:01:00,578 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:01:00,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 20:01:00,578 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:01:00,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:01:00,579 INFO L85 PathProgramCache]: Analyzing trace with hash -897637382, now seen corresponding path program 67 times [2022-01-31 20:01:00,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:01:00,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11790700] [2022-01-31 20:01:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:01:00,582 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:01:00,582 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:01:00,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:01:00,584 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:01:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:01:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:01:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:01:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:01:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:03,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:01:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:01:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:03,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:01:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:01:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:03,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:01:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:01:03,682 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:01:03,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11790700] [2022-01-31 20:01:03,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [11790700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:01:03,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:01:03,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:01:03,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244847884] [2022-01-31 20:01:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:01:03,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:01:03,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:01:03,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:01:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:01:03,683 INFO L87 Difference]: Start difference. First operand 251 states and 359 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:01:10,812 INFO L93 Difference]: Finished difference Result 362 states and 487 transitions. [2022-01-31 20:01:10,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 20:01:10,812 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:01:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:01:10,814 INFO L225 Difference]: With dead ends: 362 [2022-01-31 20:01:10,814 INFO L226 Difference]: Without dead ends: 357 [2022-01-31 20:01:10,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3444 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1422, Invalid=12384, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 20:01:10,815 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 142 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 3200 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 3200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 20:01:10,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 160 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 3200 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 20:01:10,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-01-31 20:01:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 239. [2022-01-31 20:01:11,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 203 states have (on average 1.3596059113300492) internal successors, (276), 203 states have internal predecessors, (276), 33 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 20:01:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 340 transitions. [2022-01-31 20:01:11,618 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 340 transitions. Word has length 111 [2022-01-31 20:01:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:01:11,618 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 340 transitions. [2022-01-31 20:01:11,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 340 transitions. [2022-01-31 20:01:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:01:11,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:01:11,619 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:01:11,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 20:01:11,619 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:01:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:01:11,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1741642884, now seen corresponding path program 68 times [2022-01-31 20:01:11,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:01:11,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611720448] [2022-01-31 20:01:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:01:11,624 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:01:11,624 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:01:11,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:01:11,626 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:01:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:01:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:14,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:01:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:01:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:01:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:14,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:01:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:01:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:01:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:01:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:14,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:01:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:01:14,315 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:01:14,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611720448] [2022-01-31 20:01:14,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1611720448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:01:14,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:01:14,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:01:14,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073250662] [2022-01-31 20:01:14,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:01:14,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:01:14,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:01:14,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:01:14,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2453, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:01:14,316 INFO L87 Difference]: Start difference. First operand 239 states and 340 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:21,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:01:21,153 INFO L93 Difference]: Finished difference Result 323 states and 432 transitions. [2022-01-31 20:01:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 20:01:21,154 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:01:21,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:01:21,155 INFO L225 Difference]: With dead ends: 323 [2022-01-31 20:01:21,155 INFO L226 Difference]: Without dead ends: 318 [2022-01-31 20:01:21,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3207 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1082, Invalid=12028, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 20:01:21,155 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 116 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 3298 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 3475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 3298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:01:21,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 135 Invalid, 3475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 3298 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 20:01:21,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-31 20:01:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 221. [2022-01-31 20:01:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 188 states have (on average 1.351063829787234) internal successors, (254), 188 states have internal predecessors, (254), 30 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 20:01:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 312 transitions. [2022-01-31 20:01:21,913 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 312 transitions. Word has length 111 [2022-01-31 20:01:21,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:01:21,914 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 312 transitions. [2022-01-31 20:01:21,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 312 transitions. [2022-01-31 20:01:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:01:21,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:01:21,915 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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 20:01:21,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 20:01:21,915 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:01:21,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:01:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 242375158, now seen corresponding path program 69 times [2022-01-31 20:01:21,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:01:21,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251869962] [2022-01-31 20:01:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:01:21,931 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:01:21,931 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:01:21,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:01:21,934 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:01:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:24,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:01:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:01:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:01:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:24,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:01:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:01:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:24,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:01:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:24,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:01:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:01:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:24,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:01:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:01:24,590 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:01:24,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251869962] [2022-01-31 20:01:24,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1251869962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:01:24,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:01:24,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:01:24,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680278758] [2022-01-31 20:01:24,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:01:24,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:01:24,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:01:24,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:01:24,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2453, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:01:24,592 INFO L87 Difference]: Start difference. First operand 221 states and 312 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:31,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:01:31,170 INFO L93 Difference]: Finished difference Result 306 states and 416 transitions. [2022-01-31 20:01:31,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 20:01:31,170 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:01:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:01:31,171 INFO L225 Difference]: With dead ends: 306 [2022-01-31 20:01:31,171 INFO L226 Difference]: Without dead ends: 301 [2022-01-31 20:01:31,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3104 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1058, Invalid=11824, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 20:01:31,172 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 113 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 3746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:01:31,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 171 Invalid, 3746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 20:01:31,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-01-31 20:01:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 253. [2022-01-31 20:01:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 215 states have (on average 1.3627906976744186) internal successors, (293), 215 states have internal predecessors, (293), 35 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 20:01:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 361 transitions. [2022-01-31 20:01:32,062 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 361 transitions. Word has length 111 [2022-01-31 20:01:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:01:32,062 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 361 transitions. [2022-01-31 20:01:32,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:32,062 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 361 transitions. [2022-01-31 20:01:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:01:32,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:01:32,063 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:01:32,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 20:01:32,063 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:01:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:01:32,063 INFO L85 PathProgramCache]: Analyzing trace with hash -601630344, now seen corresponding path program 70 times [2022-01-31 20:01:32,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:01:32,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510369117] [2022-01-31 20:01:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:01:32,069 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:01:32,069 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:01:32,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:01:32,071 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:01:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:34,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:01:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:01:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:01:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:01:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:01:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:01:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:01:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:01:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:01:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:01:34,637 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:01:34,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510369117] [2022-01-31 20:01:34,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1510369117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:01:34,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:01:34,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:01:34,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563013190] [2022-01-31 20:01:34,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:01:34,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:01:34,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:01:34,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:01:34,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2441, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:01:34,638 INFO L87 Difference]: Start difference. First operand 253 states and 361 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:01:41,793 INFO L93 Difference]: Finished difference Result 369 states and 498 transitions. [2022-01-31 20:01:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 20:01:41,794 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:01:41,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:01:41,795 INFO L225 Difference]: With dead ends: 369 [2022-01-31 20:01:41,795 INFO L226 Difference]: Without dead ends: 364 [2022-01-31 20:01:41,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3625 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1164, Invalid=12408, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 20:01:41,796 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 123 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4119 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 4286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 4119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 20:01:41,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 191 Invalid, 4286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 4119 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 20:01:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-01-31 20:01:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 261. [2022-01-31 20:01:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 222 states have (on average 1.364864864864865) internal successors, (303), 222 states have internal predecessors, (303), 36 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 20:01:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 373 transitions. [2022-01-31 20:01:42,707 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 373 transitions. Word has length 111 [2022-01-31 20:01:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:01:42,707 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 373 transitions. [2022-01-31 20:01:42,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 373 transitions. [2022-01-31 20:01:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:01:42,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:01:42,708 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:01:42,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 20:01:42,709 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:01:42,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:01:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1135861496, now seen corresponding path program 71 times [2022-01-31 20:01:42,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:01:42,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795077572] [2022-01-31 20:01:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:01:42,717 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:01:42,717 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:01:42,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:01:42,719 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:01:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:45,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:01:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:01:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:01:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:45,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:01:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:45,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:01:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:45,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:01:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:45,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:01:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:45,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:01:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:45,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:01:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:01:45,293 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:01:45,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795077572] [2022-01-31 20:01:45,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [795077572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:01:45,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:01:45,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:01:45,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277415871] [2022-01-31 20:01:45,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:01:45,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:01:45,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:01:45,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:01:45,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2437, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:01:45,294 INFO L87 Difference]: Start difference. First operand 261 states and 373 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:01:51,660 INFO L93 Difference]: Finished difference Result 355 states and 480 transitions. [2022-01-31 20:01:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 20:01:51,660 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:01:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:01:51,661 INFO L225 Difference]: With dead ends: 355 [2022-01-31 20:01:51,661 INFO L226 Difference]: Without dead ends: 350 [2022-01-31 20:01:51,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=948, Invalid=11262, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 20:01:51,663 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 110 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 4058 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 4192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 4058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 20:01:51,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 192 Invalid, 4192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 4058 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 20:01:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-01-31 20:01:52,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 263. [2022-01-31 20:01:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 224 states have (on average 1.3660714285714286) internal successors, (306), 224 states have internal predecessors, (306), 36 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 20:01:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 376 transitions. [2022-01-31 20:01:52,559 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 376 transitions. Word has length 111 [2022-01-31 20:01:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:01:52,559 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 376 transitions. [2022-01-31 20:01:52,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:01:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 376 transitions. [2022-01-31 20:01:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:01:52,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:01:52,560 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:01:52,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 20:01:52,560 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:01:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:01:52,560 INFO L85 PathProgramCache]: Analyzing trace with hash 291855994, now seen corresponding path program 72 times [2022-01-31 20:01:52,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:01:52,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907417671] [2022-01-31 20:01:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:01:52,564 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:01:52,564 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:01:52,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:01:52,566 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:01:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:01:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:01:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:55,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:01:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:55,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:01:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:01:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:01:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:01:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:01:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:55,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:01:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:01:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:01:55,227 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:01:55,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907417671] [2022-01-31 20:01:55,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [907417671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:01:55,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:01:55,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:01:55,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641534618] [2022-01-31 20:01:55,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:01:55,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:01:55,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:01:55,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:01:55,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2453, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:01:55,228 INFO L87 Difference]: Start difference. First operand 263 states and 376 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:02:02,538 INFO L93 Difference]: Finished difference Result 345 states and 465 transitions. [2022-01-31 20:02:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 20:02:02,539 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:02:02,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:02:02,540 INFO L225 Difference]: With dead ends: 345 [2022-01-31 20:02:02,540 INFO L226 Difference]: Without dead ends: 340 [2022-01-31 20:02:02,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3203 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1082, Invalid=12028, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 20:02:02,541 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 103 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 3866 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 4014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 20:02:02,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 167 Invalid, 4014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3866 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 20:02:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-01-31 20:02:03,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 255. [2022-01-31 20:02:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 217 states have (on average 1.3640552995391706) internal successors, (296), 217 states have internal predecessors, (296), 35 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 20:02:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 364 transitions. [2022-01-31 20:02:03,456 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 364 transitions. Word has length 111 [2022-01-31 20:02:03,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:02:03,456 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 364 transitions. [2022-01-31 20:02:03,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 364 transitions. [2022-01-31 20:02:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:02:03,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:02:03,457 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:02:03,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 20:02:03,457 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:02:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:02:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1629160568, now seen corresponding path program 73 times [2022-01-31 20:02:03,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:02:03,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760014163] [2022-01-31 20:02:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:02:03,461 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:02:03,461 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:02:03,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:02:03,462 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:02:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:02:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:02:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:06,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:02:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:02:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:06,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:02:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:06,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:02:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:02:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:02:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:06,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:02:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:02:06,122 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:02:06,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760014163] [2022-01-31 20:02:06,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1760014163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:02:06,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:02:06,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:02:06,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751789477] [2022-01-31 20:02:06,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:02:06,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:02:06,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:02:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:02:06,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2453, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:02:06,123 INFO L87 Difference]: Start difference. First operand 255 states and 364 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:02:12,861 INFO L93 Difference]: Finished difference Result 327 states and 449 transitions. [2022-01-31 20:02:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 20:02:12,861 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:02:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:02:12,862 INFO L225 Difference]: With dead ends: 327 [2022-01-31 20:02:12,862 INFO L226 Difference]: Without dead ends: 322 [2022-01-31 20:02:12,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3104 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1058, Invalid=11824, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 20:02:12,863 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 126 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 3818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:02:12,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 185 Invalid, 3818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 3633 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 20:02:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-01-31 20:02:13,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 275. [2022-01-31 20:02:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 234 states have (on average 1.3717948717948718) internal successors, (321), 234 states have internal predecessors, (321), 38 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 20:02:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 395 transitions. [2022-01-31 20:02:13,813 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 395 transitions. Word has length 111 [2022-01-31 20:02:13,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:02:13,813 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 395 transitions. [2022-01-31 20:02:13,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:13,813 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 395 transitions. [2022-01-31 20:02:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:02:13,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:02:13,814 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:02:13,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 20:02:13,814 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:02:13,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:02:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash 785155066, now seen corresponding path program 74 times [2022-01-31 20:02:13,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:02:13,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850951551] [2022-01-31 20:02:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:02:13,817 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:02:13,817 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:02:13,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:02:13,819 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:02:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:02:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:02:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:15,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:02:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:02:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:15,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:02:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:15,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:02:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:15,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:02:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:02:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:02:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:02:15,727 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:02:15,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850951551] [2022-01-31 20:02:15,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1850951551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:02:15,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:02:15,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 20:02:15,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891441887] [2022-01-31 20:02:15,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:02:15,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 20:02:15,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:02:15,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 20:02:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2218, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 20:02:15,728 INFO L87 Difference]: Start difference. First operand 275 states and 395 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 47 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:02:20,490 INFO L93 Difference]: Finished difference Result 320 states and 445 transitions. [2022-01-31 20:02:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 20:02:20,490 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 47 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:02:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:02:20,491 INFO L225 Difference]: With dead ends: 320 [2022-01-31 20:02:20,491 INFO L226 Difference]: Without dead ends: 315 [2022-01-31 20:02:20,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2042 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=462, Invalid=8468, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 20:02:20,492 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 80 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4488 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 4553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 20:02:20,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 171 Invalid, 4553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4488 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 20:02:20,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-01-31 20:02:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 275. [2022-01-31 20:02:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 234 states have (on average 1.3717948717948718) internal successors, (321), 234 states have internal predecessors, (321), 38 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 20:02:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 395 transitions. [2022-01-31 20:02:21,447 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 395 transitions. Word has length 111 [2022-01-31 20:02:21,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:02:21,447 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 395 transitions. [2022-01-31 20:02:21,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 47 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 395 transitions. [2022-01-31 20:02:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:02:21,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:02:21,448 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:02:21,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 20:02:21,448 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:02:21,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:02:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1772320390, now seen corresponding path program 75 times [2022-01-31 20:02:21,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:02:21,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18065846] [2022-01-31 20:02:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:02:21,451 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:02:21,451 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:02:21,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:02:21,453 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:02:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:23,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:02:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:23,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:02:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:02:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:02:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:23,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:02:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:23,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:02:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:23,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:02:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:02:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:23,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:02:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:02:23,919 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:02:23,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18065846] [2022-01-31 20:02:23,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [18065846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:02:23,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:02:23,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:02:23,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583579036] [2022-01-31 20:02:23,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:02:23,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:02:23,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:02:23,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:02:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2449, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:02:23,920 INFO L87 Difference]: Start difference. First operand 275 states and 395 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:02:30,277 INFO L93 Difference]: Finished difference Result 336 states and 465 transitions. [2022-01-31 20:02:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 20:02:30,277 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:02:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:02:30,278 INFO L225 Difference]: With dead ends: 336 [2022-01-31 20:02:30,279 INFO L226 Difference]: Without dead ends: 331 [2022-01-31 20:02:30,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1051, Invalid=11605, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 20:02:30,279 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 111 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 3666 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 3666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:02:30,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 167 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 3666 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 20:02:30,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-01-31 20:02:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 281. [2022-01-31 20:02:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 239 states have (on average 1.3723849372384938) internal successors, (328), 239 states have internal predecessors, (328), 39 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 20:02:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 404 transitions. [2022-01-31 20:02:31,253 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 404 transitions. Word has length 111 [2022-01-31 20:02:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:02:31,254 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 404 transitions. [2022-01-31 20:02:31,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 404 transitions. [2022-01-31 20:02:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:02:31,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:02:31,255 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:02:31,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 20:02:31,255 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:02:31,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:02:31,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1678641404, now seen corresponding path program 76 times [2022-01-31 20:02:31,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:02:31,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622623621] [2022-01-31 20:02:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:02:31,261 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:02:31,261 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:02:31,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:02:31,263 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:02:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:02:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:33,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:02:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:02:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:02:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:02:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:02:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:02:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:33,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:02:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:33,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:02:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:02:33,828 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:02:33,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622623621] [2022-01-31 20:02:33,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1622623621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:02:33,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:02:33,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:02:33,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102122835] [2022-01-31 20:02:33,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:02:33,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:02:33,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:02:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:02:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2441, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:02:33,829 INFO L87 Difference]: Start difference. First operand 281 states and 404 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:02:41,305 INFO L93 Difference]: Finished difference Result 401 states and 543 transitions. [2022-01-31 20:02:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 20:02:41,306 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:02:41,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:02:41,307 INFO L225 Difference]: With dead ends: 401 [2022-01-31 20:02:41,307 INFO L226 Difference]: Without dead ends: 396 [2022-01-31 20:02:41,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3922 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1322, Invalid=13440, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 20:02:41,308 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 115 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 3919 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 4077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 3919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:02:41,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 189 Invalid, 4077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 3919 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 20:02:41,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-01-31 20:02:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 281. [2022-01-31 20:02:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 239 states have (on average 1.3723849372384938) internal successors, (328), 239 states have internal predecessors, (328), 39 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 20:02:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 404 transitions. [2022-01-31 20:02:42,272 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 404 transitions. Word has length 111 [2022-01-31 20:02:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:02:42,272 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 404 transitions. [2022-01-31 20:02:42,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 404 transitions. [2022-01-31 20:02:42,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:02:42,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:02:42,273 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:02:42,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 20:02:42,273 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:02:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:02:42,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1443804680, now seen corresponding path program 77 times [2022-01-31 20:02:42,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:02:42,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642789190] [2022-01-31 20:02:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:02:42,280 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:02:42,281 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:02:42,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:02:42,282 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:02:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:44,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:02:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:44,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:02:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:44,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:02:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:02:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:44,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:02:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:44,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:02:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:44,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:02:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:02:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:02:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:02:44,913 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:02:44,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642789190] [2022-01-31 20:02:44,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1642789190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:02:44,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:02:44,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:02:44,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768689404] [2022-01-31 20:02:44,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:02:44,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:02:44,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:02:44,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:02:44,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2444, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:02:44,914 INFO L87 Difference]: Start difference. First operand 281 states and 404 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:52,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:02:52,516 INFO L93 Difference]: Finished difference Result 378 states and 527 transitions. [2022-01-31 20:02:52,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 20:02:52,517 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:02:52,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:02:52,518 INFO L225 Difference]: With dead ends: 378 [2022-01-31 20:02:52,518 INFO L226 Difference]: Without dead ends: 373 [2022-01-31 20:02:52,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3529 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1340, Invalid=12940, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 20:02:52,519 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 124 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 3883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:02:52,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 155 Invalid, 3883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 20:02:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-01-31 20:02:53,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 305. [2022-01-31 20:02:53,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 260 states have (on average 1.3653846153846154) internal successors, (355), 260 states have internal predecessors, (355), 42 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 20:02:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 437 transitions. [2022-01-31 20:02:53,567 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 437 transitions. Word has length 111 [2022-01-31 20:02:53,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:02:53,567 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 437 transitions. [2022-01-31 20:02:53,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:02:53,567 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 437 transitions. [2022-01-31 20:02:53,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:02:53,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:02:53,568 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:02:53,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 20:02:53,568 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:02:53,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:02:53,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2007157114, now seen corresponding path program 78 times [2022-01-31 20:02:53,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:02:53,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842466337] [2022-01-31 20:02:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:02:53,574 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:02:53,574 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:02:53,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:02:53,576 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:02:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:56,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:02:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:56,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:02:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:56,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:02:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:56,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:02:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:02:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:02:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:56,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:02:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:02:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:56,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:02:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:02:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:02:56,123 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:02:56,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842466337] [2022-01-31 20:02:56,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1842466337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:02:56,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:02:56,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:02:56,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30450123] [2022-01-31 20:02:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:02:56,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:02:56,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:02:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:02:56,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2440, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:02:56,124 INFO L87 Difference]: Start difference. First operand 305 states and 437 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:03:02,589 INFO L93 Difference]: Finished difference Result 362 states and 503 transitions. [2022-01-31 20:03:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 20:03:02,589 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:03:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:03:02,591 INFO L225 Difference]: With dead ends: 362 [2022-01-31 20:03:02,591 INFO L226 Difference]: Without dead ends: 357 [2022-01-31 20:03:02,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3294 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1061, Invalid=11595, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 20:03:02,591 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 107 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 3956 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 4109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:03:02,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 191 Invalid, 4109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3956 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 20:03:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-01-31 20:03:03,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 303. [2022-01-31 20:03:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 258 states have (on average 1.3682170542635659) internal successors, (353), 258 states have internal predecessors, (353), 42 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 20:03:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 435 transitions. [2022-01-31 20:03:03,658 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 435 transitions. Word has length 111 [2022-01-31 20:03:03,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:03:03,658 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 435 transitions. [2022-01-31 20:03:03,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 435 transitions. [2022-01-31 20:03:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:03:03,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:03:03,659 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:03:03,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 20:03:03,659 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:03:03,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:03:03,659 INFO L85 PathProgramCache]: Analyzing trace with hash -550318342, now seen corresponding path program 79 times [2022-01-31 20:03:03,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:03:03,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333080253] [2022-01-31 20:03:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:03:03,662 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:03:03,662 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:03:03,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:03:03,664 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:03:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:03:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:03:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:06,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:03:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:03:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:03:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:03:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:03:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:03:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:03:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:03:06,284 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:03:06,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333080253] [2022-01-31 20:03:06,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1333080253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:03:06,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:03:06,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:03:06,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209745773] [2022-01-31 20:03:06,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:03:06,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:03:06,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:03:06,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:03:06,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2456, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:03:06,285 INFO L87 Difference]: Start difference. First operand 303 states and 435 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:03:13,535 INFO L93 Difference]: Finished difference Result 404 states and 554 transitions. [2022-01-31 20:03:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 20:03:13,536 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:03:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:03:13,537 INFO L225 Difference]: With dead ends: 404 [2022-01-31 20:03:13,537 INFO L226 Difference]: Without dead ends: 399 [2022-01-31 20:03:13,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3204 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1152, Invalid=12188, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 20:03:13,538 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 116 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 3666 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 3851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 3666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:03:13,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 167 Invalid, 3851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 3666 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 20:03:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-01-31 20:03:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 303. [2022-01-31 20:03:14,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 258 states have (on average 1.3682170542635659) internal successors, (353), 258 states have internal predecessors, (353), 42 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 20:03:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 435 transitions. [2022-01-31 20:03:14,629 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 435 transitions. Word has length 111 [2022-01-31 20:03:14,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:03:14,629 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 435 transitions. [2022-01-31 20:03:14,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:14,629 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 435 transitions. [2022-01-31 20:03:14,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:03:14,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:03:14,630 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:03:14,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 20:03:14,630 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:03:14,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:03:14,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1394323844, now seen corresponding path program 80 times [2022-01-31 20:03:14,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:03:14,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589196383] [2022-01-31 20:03:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:03:14,635 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:03:14,635 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:03:14,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:03:14,637 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:03:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:03:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:03:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:03:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:03:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:03:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:03:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:03:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:17,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:03:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:03:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:03:17,229 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:03:17,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589196383] [2022-01-31 20:03:17,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [589196383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:03:17,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:03:17,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:03:17,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726880209] [2022-01-31 20:03:17,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:03:17,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:03:17,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:03:17,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:03:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2459, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:03:17,231 INFO L87 Difference]: Start difference. First operand 303 states and 435 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:25,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:03:25,068 INFO L93 Difference]: Finished difference Result 406 states and 556 transitions. [2022-01-31 20:03:25,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 20:03:25,068 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:03:25,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:03:25,069 INFO L225 Difference]: With dead ends: 406 [2022-01-31 20:03:25,069 INFO L226 Difference]: Without dead ends: 401 [2022-01-31 20:03:25,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1191, Invalid=12615, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 20:03:25,070 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 116 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4359 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 4527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 4359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 20:03:25,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 207 Invalid, 4527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 4359 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 20:03:25,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-01-31 20:03:26,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 295. [2022-01-31 20:03:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 251 states have (on average 1.3705179282868525) internal successors, (344), 251 states have internal predecessors, (344), 41 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 20:03:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 424 transitions. [2022-01-31 20:03:26,083 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 424 transitions. Word has length 111 [2022-01-31 20:03:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:03:26,083 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 424 transitions. [2022-01-31 20:03:26,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 424 transitions. [2022-01-31 20:03:26,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:03:26,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:03:26,084 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:03:26,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 20:03:26,084 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:03:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:03:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash -57019270, now seen corresponding path program 81 times [2022-01-31 20:03:26,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:03:26,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466996078] [2022-01-31 20:03:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:03:26,087 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:03:26,088 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:03:26,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:03:26,089 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:03:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:03:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:03:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:27,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:03:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:27,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:03:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:03:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:27,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:03:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:03:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:27,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:03:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:27,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:03:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:03:27,953 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:03:27,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466996078] [2022-01-31 20:03:27,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [466996078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:03:27,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:03:27,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 20:03:27,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597932451] [2022-01-31 20:03:27,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:03:27,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 20:03:27,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:03:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 20:03:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2218, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 20:03:27,954 INFO L87 Difference]: Start difference. First operand 295 states and 424 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 47 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:03:32,769 INFO L93 Difference]: Finished difference Result 347 states and 485 transitions. [2022-01-31 20:03:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 20:03:32,769 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 47 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:03:32,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:03:32,770 INFO L225 Difference]: With dead ends: 347 [2022-01-31 20:03:32,770 INFO L226 Difference]: Without dead ends: 342 [2022-01-31 20:03:32,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2042 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=462, Invalid=8468, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 20:03:32,771 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 81 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4466 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 4466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 20:03:32,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 186 Invalid, 4532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 4466 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 20:03:32,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-01-31 20:03:33,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 301. [2022-01-31 20:03:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 256 states have (on average 1.37109375) internal successors, (351), 256 states have internal predecessors, (351), 42 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 20:03:33,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 433 transitions. [2022-01-31 20:03:33,841 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 433 transitions. Word has length 111 [2022-01-31 20:03:33,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:03:33,841 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 433 transitions. [2022-01-31 20:03:33,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 47 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:33,842 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 433 transitions. [2022-01-31 20:03:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:03:33,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:03:33,842 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:03:33,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 20:03:33,842 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:03:33,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:03:33,843 INFO L85 PathProgramCache]: Analyzing trace with hash -901024772, now seen corresponding path program 82 times [2022-01-31 20:03:33,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:03:33,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062546350] [2022-01-31 20:03:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:03:33,846 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:03:33,846 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:03:33,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:03:33,848 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:03:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:03:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:03:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:03:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:03:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:03:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:03:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:03:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:36,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:03:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:03:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:03:36,442 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:03:36,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062546350] [2022-01-31 20:03:36,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1062546350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:03:36,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:03:36,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:03:36,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028523103] [2022-01-31 20:03:36,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:03:36,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:03:36,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:03:36,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:03:36,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2433, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:03:36,443 INFO L87 Difference]: Start difference. First operand 301 states and 433 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:03:43,704 INFO L93 Difference]: Finished difference Result 422 states and 584 transitions. [2022-01-31 20:03:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 20:03:43,705 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:03:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:03:43,706 INFO L225 Difference]: With dead ends: 422 [2022-01-31 20:03:43,706 INFO L226 Difference]: Without dead ends: 417 [2022-01-31 20:03:43,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3426 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1395, Invalid=12177, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 20:03:43,707 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 137 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 3401 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 3618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 3401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:03:43,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 167 Invalid, 3618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 3401 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 20:03:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-31 20:03:44,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 307. [2022-01-31 20:03:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 261 states have (on average 1.3754789272030652) internal successors, (359), 261 states have internal predecessors, (359), 43 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 20:03:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 443 transitions. [2022-01-31 20:03:44,793 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 443 transitions. Word has length 111 [2022-01-31 20:03:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:03:44,793 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 443 transitions. [2022-01-31 20:03:44,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:44,793 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 443 transitions. [2022-01-31 20:03:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:03:44,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:03:44,794 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:03:44,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 20:03:44,794 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:03:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:03:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash 836467068, now seen corresponding path program 83 times [2022-01-31 20:03:44,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:03:44,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052483013] [2022-01-31 20:03:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:03:44,799 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:03:44,799 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:03:44,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:03:44,801 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:03:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:47,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:03:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:03:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:47,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:03:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:03:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:03:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:47,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:03:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:03:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:03:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:03:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:03:47,471 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:03:47,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052483013] [2022-01-31 20:03:47,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2052483013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:03:47,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:03:47,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:03:47,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627052589] [2022-01-31 20:03:47,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:03:47,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:03:47,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:03:47,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:03:47,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2459, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:03:47,475 INFO L87 Difference]: Start difference. First operand 307 states and 443 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:03:54,951 INFO L93 Difference]: Finished difference Result 414 states and 565 transitions. [2022-01-31 20:03:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 20:03:54,952 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:03:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:03:54,953 INFO L225 Difference]: With dead ends: 414 [2022-01-31 20:03:54,953 INFO L226 Difference]: Without dead ends: 409 [2022-01-31 20:03:54,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3333 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1193, Invalid=12613, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 20:03:54,954 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 138 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:03:54,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 149 Invalid, 3525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 3331 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 20:03:54,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-01-31 20:03:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 305. [2022-01-31 20:03:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 259 states have (on average 1.3745173745173744) internal successors, (356), 259 states have internal predecessors, (356), 43 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 20:03:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 440 transitions. [2022-01-31 20:03:56,037 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 440 transitions. Word has length 111 [2022-01-31 20:03:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:03:56,038 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 440 transitions. [2022-01-31 20:03:56,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:03:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 440 transitions. [2022-01-31 20:03:56,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:03:56,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:03:56,038 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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 20:03:56,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 20:03:56,038 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:03:56,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:03:56,039 INFO L85 PathProgramCache]: Analyzing trace with hash -7538434, now seen corresponding path program 84 times [2022-01-31 20:03:56,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:03:56,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175679672] [2022-01-31 20:03:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:03:56,055 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:03:56,055 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:03:56,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:03:56,057 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:03:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:03:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:03:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:03:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:58,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:03:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:58,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:03:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:03:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:58,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:03:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:03:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:58,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:03:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:03:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:03:58,657 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:03:58,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175679672] [2022-01-31 20:03:58,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1175679672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:03:58,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:03:58,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:03:58,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097335828] [2022-01-31 20:03:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:03:58,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:03:58,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:03:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:03:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2444, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:03:58,658 INFO L87 Difference]: Start difference. First operand 305 states and 440 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:04:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:04:06,404 INFO L93 Difference]: Finished difference Result 415 states and 571 transitions. [2022-01-31 20:04:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 20:04:06,405 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:04:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:04:06,406 INFO L225 Difference]: With dead ends: 415 [2022-01-31 20:04:06,406 INFO L226 Difference]: Without dead ends: 410 [2022-01-31 20:04:06,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3341 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1261, Invalid=12311, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 20:04:06,407 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 129 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 3462 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 3462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:04:06,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 156 Invalid, 3649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 3462 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 20:04:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-31 20:04:07,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 299. [2022-01-31 20:04:07,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 254 states have (on average 1.374015748031496) internal successors, (349), 254 states have internal predecessors, (349), 42 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 20:04:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 431 transitions. [2022-01-31 20:04:07,478 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 431 transitions. Word has length 111 [2022-01-31 20:04:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:04:07,478 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 431 transitions. [2022-01-31 20:04:07,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:04:07,478 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 431 transitions. [2022-01-31 20:04:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:04:07,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:04:07,479 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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 20:04:07,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 20:04:07,479 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:04:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:04:07,479 INFO L85 PathProgramCache]: Analyzing trace with hash 384753526, now seen corresponding path program 85 times [2022-01-31 20:04:07,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:04:07,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543763579] [2022-01-31 20:04:07,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:04:07,483 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:04:07,484 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:04:07,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:04:07,486 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:04:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:09,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:04:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:09,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:04:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:04:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:09,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:04:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:09,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:04:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:09,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:04:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:09,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:04:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:04:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:09,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:04:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:04:09,969 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:04:09,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543763579] [2022-01-31 20:04:09,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1543763579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:04:09,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:04:09,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:04:09,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818078327] [2022-01-31 20:04:09,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:04:09,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:04:09,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:04:09,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:04:09,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2408, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:04:09,971 INFO L87 Difference]: Start difference. First operand 299 states and 431 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:04:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:04:16,680 INFO L93 Difference]: Finished difference Result 448 states and 620 transitions. [2022-01-31 20:04:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 20:04:16,681 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:04:16,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:04:16,682 INFO L225 Difference]: With dead ends: 448 [2022-01-31 20:04:16,682 INFO L226 Difference]: Without dead ends: 443 [2022-01-31 20:04:16,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3381 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1106, Invalid=11326, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 20:04:16,683 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 112 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3716 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 3880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:04:16,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 174 Invalid, 3880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3716 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 20:04:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-01-31 20:04:17,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 325. [2022-01-31 20:04:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 276 states have (on average 1.3768115942028984) internal successors, (380), 276 states have internal predecessors, (380), 46 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 20:04:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 470 transitions. [2022-01-31 20:04:17,836 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 470 transitions. Word has length 111 [2022-01-31 20:04:17,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:04:17,836 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 470 transitions. [2022-01-31 20:04:17,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:04:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 470 transitions. [2022-01-31 20:04:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:04:17,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:04:17,837 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:04:17,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 20:04:17,837 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:04:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:04:17,837 INFO L85 PathProgramCache]: Analyzing trace with hash -459251976, now seen corresponding path program 86 times [2022-01-31 20:04:17,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:04:17,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101025357] [2022-01-31 20:04:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:04:17,841 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:04:17,841 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:04:17,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:04:17,843 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:04:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:04:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:04:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:04:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:04:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:04:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:04:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:20,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:04:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:04:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:04:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:04:20,297 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:04:20,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101025357] [2022-01-31 20:04:20,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [101025357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:04:20,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:04:20,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:04:20,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310445166] [2022-01-31 20:04:20,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:04:20,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:04:20,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:04:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:04:20,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2452, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:04:20,298 INFO L87 Difference]: Start difference. First operand 325 states and 470 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:04:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:04:27,311 INFO L93 Difference]: Finished difference Result 417 states and 572 transitions. [2022-01-31 20:04:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 20:04:27,312 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:04:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:04:27,312 INFO L225 Difference]: With dead ends: 417 [2022-01-31 20:04:27,312 INFO L226 Difference]: Without dead ends: 412 [2022-01-31 20:04:27,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3163 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1060, Invalid=11822, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 20:04:27,313 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 108 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 3870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:04:27,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 170 Invalid, 3870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3699 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 20:04:27,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-01-31 20:04:28,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 317. [2022-01-31 20:04:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 269 states have (on average 1.3754646840148699) internal successors, (370), 269 states have internal predecessors, (370), 45 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 20:04:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 458 transitions. [2022-01-31 20:04:28,457 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 458 transitions. Word has length 111 [2022-01-31 20:04:28,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:04:28,457 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 458 transitions. [2022-01-31 20:04:28,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:04:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 458 transitions. [2022-01-31 20:04:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:04:28,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:04:28,458 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:04:28,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 20:04:28,458 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:04:28,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:04:28,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1278239864, now seen corresponding path program 87 times [2022-01-31 20:04:28,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:04:28,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255182586] [2022-01-31 20:04:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:04:28,461 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:04:28,461 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:04:28,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:04:28,463 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:04:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:30,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:04:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:30,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:04:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:30,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:04:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:04:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:04:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:30,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:04:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:30,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:04:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:04:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:04:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:04:30,914 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:04:30,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255182586] [2022-01-31 20:04:30,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [255182586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:04:30,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:04:30,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:04:30,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536199370] [2022-01-31 20:04:30,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:04:30,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:04:30,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:04:30,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:04:30,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:04:30,915 INFO L87 Difference]: Start difference. First operand 317 states and 458 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:04:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:04:38,785 INFO L93 Difference]: Finished difference Result 538 states and 755 transitions. [2022-01-31 20:04:38,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 20:04:38,785 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:04:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:04:38,786 INFO L225 Difference]: With dead ends: 538 [2022-01-31 20:04:38,787 INFO L226 Difference]: Without dead ends: 533 [2022-01-31 20:04:38,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3981 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1441, Invalid=12839, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 20:04:38,787 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 133 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:04:38,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 137 Invalid, 3534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 20:04:38,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-31 20:04:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 321. [2022-01-31 20:04:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 273 states have (on average 1.3553113553113554) internal successors, (370), 273 states have internal predecessors, (370), 45 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 20:04:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 458 transitions. [2022-01-31 20:04:39,918 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 458 transitions. Word has length 111 [2022-01-31 20:04:39,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:04:39,918 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 458 transitions. [2022-01-31 20:04:39,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:04:39,918 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 458 transitions. [2022-01-31 20:04:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:04:39,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:04:39,919 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:04:39,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 20:04:39,919 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:04:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:04:39,919 INFO L85 PathProgramCache]: Analyzing trace with hash 434234362, now seen corresponding path program 88 times [2022-01-31 20:04:39,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:04:39,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733565747] [2022-01-31 20:04:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:04:39,922 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:04:39,922 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 20:04:39,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:04:39,924 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:04:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:04:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:42,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:04:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:04:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:04:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:04:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:04:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:04:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:04:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:42,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:04:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:04:42,525 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:04:42,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733565747] [2022-01-31 20:04:42,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1733565747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:04:42,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:04:42,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:04:42,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762571676] [2022-01-31 20:04:42,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:04:42,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:04:42,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:04:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:04:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2429, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:04:42,526 INFO L87 Difference]: Start difference. First operand 321 states and 458 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:04:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:04:50,772 INFO L93 Difference]: Finished difference Result 451 states and 616 transitions. [2022-01-31 20:04:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 20:04:50,773 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:04:50,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:04:50,774 INFO L225 Difference]: With dead ends: 451 [2022-01-31 20:04:50,774 INFO L226 Difference]: Without dead ends: 446 [2022-01-31 20:04:50,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1425, Invalid=12855, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 20:04:50,775 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 130 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 3893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:04:50,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 168 Invalid, 3893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 20:04:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-31 20:04:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 307. [2022-01-31 20:04:51,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 261 states have (on average 1.3524904214559388) internal successors, (353), 261 states have internal predecessors, (353), 43 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 20:04:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 437 transitions. [2022-01-31 20:04:51,824 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 437 transitions. Word has length 111 [2022-01-31 20:04:51,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:04:51,824 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 437 transitions. [2022-01-31 20:04:51,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:04:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 437 transitions. [2022-01-31 20:04:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:04:51,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:04:51,825 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:04:51,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 20:04:51,825 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:04:51,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:04:51,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1771538936, now seen corresponding path program 89 times [2022-01-31 20:04:51,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:04:51,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863536207] [2022-01-31 20:04:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:04:51,828 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:04:51,828 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:04:51,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:04:51,830 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:04:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:04:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:04:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:54,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:04:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:54,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:04:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:04:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:04:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:54,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:04:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:04:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:54,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:04:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:04:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:04:54,341 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:04:54,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863536207] [2022-01-31 20:04:54,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [863536207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:04:54,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:04:54,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:04:54,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231450378] [2022-01-31 20:04:54,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:04:54,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:04:54,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:04:54,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:04:54,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2444, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:04:54,343 INFO L87 Difference]: Start difference. First operand 307 states and 437 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:05:01,361 INFO L93 Difference]: Finished difference Result 425 states and 578 transitions. [2022-01-31 20:05:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 20:05:01,362 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:05:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:05:01,363 INFO L225 Difference]: With dead ends: 425 [2022-01-31 20:05:01,363 INFO L226 Difference]: Without dead ends: 420 [2022-01-31 20:05:01,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3389 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1028, Invalid=11854, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 20:05:01,364 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 110 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 4081 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 4253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 4081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 20:05:01,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 194 Invalid, 4253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 4081 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 20:05:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-31 20:05:02,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 313. [2022-01-31 20:05:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 266 states have (on average 1.3533834586466165) internal successors, (360), 266 states have internal predecessors, (360), 44 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 20:05:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 446 transitions. [2022-01-31 20:05:02,474 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 446 transitions. Word has length 111 [2022-01-31 20:05:02,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:05:02,474 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 446 transitions. [2022-01-31 20:05:02,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 446 transitions. [2022-01-31 20:05:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:05:02,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:05:02,475 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:05:02,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 20:05:02,475 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:05:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:05:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash 927533434, now seen corresponding path program 90 times [2022-01-31 20:05:02,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:05:02,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450114139] [2022-01-31 20:05:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:05:02,479 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:05:02,480 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:05:02,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:05:02,482 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:05:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:05:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:05,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:05:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:05:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:05:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:05,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:05:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:05:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:05:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:05,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:05:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:05:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:05:05,167 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:05:05,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450114139] [2022-01-31 20:05:05,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [450114139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:05:05,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:05:05,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:05:05,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923846780] [2022-01-31 20:05:05,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:05:05,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:05:05,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:05:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:05:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2494, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:05:05,168 INFO L87 Difference]: Start difference. First operand 313 states and 446 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:12,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:05:12,129 INFO L93 Difference]: Finished difference Result 407 states and 554 transitions. [2022-01-31 20:05:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 20:05:12,129 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:05:12,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:05:12,130 INFO L225 Difference]: With dead ends: 407 [2022-01-31 20:05:12,130 INFO L226 Difference]: Without dead ends: 402 [2022-01-31 20:05:12,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2671 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=756, Invalid=11234, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 20:05:12,131 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 107 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4288 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 4423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 4288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 20:05:12,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 179 Invalid, 4423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 4288 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 20:05:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-01-31 20:05:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 307. [2022-01-31 20:05:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 261 states have (on average 1.3524904214559388) internal successors, (353), 261 states have internal predecessors, (353), 43 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 20:05:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 437 transitions. [2022-01-31 20:05:13,220 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 437 transitions. Word has length 111 [2022-01-31 20:05:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:05:13,220 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 437 transitions. [2022-01-31 20:05:13,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 437 transitions. [2022-01-31 20:05:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:05:13,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:05:13,221 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:05:13,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 20:05:13,221 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:05:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:05:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1629942022, now seen corresponding path program 91 times [2022-01-31 20:05:13,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:05:13,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368086711] [2022-01-31 20:05:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:05:13,229 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:05:13,229 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:05:13,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:05:13,232 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:05:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:15,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:05:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:05:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:15,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:05:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:05:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:15,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:05:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:05:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:05:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:05:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:05:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:05:15,701 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:05:15,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368086711] [2022-01-31 20:05:15,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [368086711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:05:15,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:05:15,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:05:15,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779842397] [2022-01-31 20:05:15,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:05:15,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:05:15,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:05:15,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:05:15,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2453, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:05:15,702 INFO L87 Difference]: Start difference. First operand 307 states and 437 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:22,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:05:22,898 INFO L93 Difference]: Finished difference Result 425 states and 578 transitions. [2022-01-31 20:05:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 20:05:22,899 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:05:22,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:05:22,899 INFO L225 Difference]: With dead ends: 425 [2022-01-31 20:05:22,900 INFO L226 Difference]: Without dead ends: 420 [2022-01-31 20:05:22,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3345 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1106, Invalid=12466, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 20:05:22,900 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 113 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 3398 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 3398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:05:22,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 141 Invalid, 3583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 3398 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 20:05:22,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-31 20:05:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 313. [2022-01-31 20:05:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 266 states have (on average 1.3533834586466165) internal successors, (360), 266 states have internal predecessors, (360), 44 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 20:05:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 446 transitions. [2022-01-31 20:05:24,009 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 446 transitions. Word has length 111 [2022-01-31 20:05:24,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:05:24,009 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 446 transitions. [2022-01-31 20:05:24,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:24,010 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 446 transitions. [2022-01-31 20:05:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:05:24,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:05:24,010 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:05:24,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 20:05:24,010 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:05:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:05:24,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1821019772, now seen corresponding path program 92 times [2022-01-31 20:05:24,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:05:24,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034969384] [2022-01-31 20:05:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:05:24,013 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:05:24,013 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:05:24,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:05:24,015 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:05:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:26,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:05:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:26,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:05:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:26,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:05:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:05:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:05:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:05:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:05:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:26,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:05:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:26,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:05:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:05:26,546 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:05:26,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034969384] [2022-01-31 20:05:26,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1034969384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:05:26,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:05:26,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:05:26,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089879819] [2022-01-31 20:05:26,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:05:26,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:05:26,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:05:26,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:05:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2452, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:05:26,547 INFO L87 Difference]: Start difference. First operand 313 states and 446 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:05:33,828 INFO L93 Difference]: Finished difference Result 410 states and 557 transitions. [2022-01-31 20:05:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 20:05:33,829 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:05:33,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:05:33,830 INFO L225 Difference]: With dead ends: 410 [2022-01-31 20:05:33,830 INFO L226 Difference]: Without dead ends: 405 [2022-01-31 20:05:33,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1060, Invalid=11822, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 20:05:33,831 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 107 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4058 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 4224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 4058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:05:33,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 190 Invalid, 4224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 4058 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 20:05:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-01-31 20:05:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 301. [2022-01-31 20:05:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 256 states have (on average 1.3515625) internal successors, (346), 256 states have internal predecessors, (346), 42 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 20:05:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 428 transitions. [2022-01-31 20:05:34,882 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 428 transitions. Word has length 111 [2022-01-31 20:05:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:05:34,883 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 428 transitions. [2022-01-31 20:05:34,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:34,883 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 428 transitions. [2022-01-31 20:05:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:05:34,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:05:34,883 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:05:34,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 20:05:34,883 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:05:34,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:05:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1301426312, now seen corresponding path program 93 times [2022-01-31 20:05:34,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:05:34,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064770112] [2022-01-31 20:05:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:05:34,886 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:05:34,887 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:05:34,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:05:34,889 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:05:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:37,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:05:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:05:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:37,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:05:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:05:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:37,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:05:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:05:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:05:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:05:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:05:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:05:37,426 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:05:37,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064770112] [2022-01-31 20:05:37,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2064770112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:05:37,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:05:37,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:05:37,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136745576] [2022-01-31 20:05:37,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:05:37,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:05:37,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:05:37,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:05:37,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2454, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:05:37,427 INFO L87 Difference]: Start difference. First operand 301 states and 428 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:44,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:05:44,476 INFO L93 Difference]: Finished difference Result 412 states and 560 transitions. [2022-01-31 20:05:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 20:05:44,476 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:05:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:05:44,477 INFO L225 Difference]: With dead ends: 412 [2022-01-31 20:05:44,477 INFO L226 Difference]: Without dead ends: 407 [2022-01-31 20:05:44,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1044, Invalid=11838, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 20:05:44,478 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 116 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 3524 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 3524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:05:44,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 156 Invalid, 3693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 3524 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 20:05:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-31 20:05:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 313. [2022-01-31 20:05:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 266 states have (on average 1.3533834586466165) internal successors, (360), 266 states have internal predecessors, (360), 44 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 20:05:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 446 transitions. [2022-01-31 20:05:45,575 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 446 transitions. Word has length 111 [2022-01-31 20:05:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:05:45,575 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 446 transitions. [2022-01-31 20:05:45,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:45,575 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 446 transitions. [2022-01-31 20:05:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:05:45,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:05:45,576 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:05:45,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 20:05:45,576 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:05:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:05:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2145431814, now seen corresponding path program 94 times [2022-01-31 20:05:45,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:05:45,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641805690] [2022-01-31 20:05:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:05:45,579 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:05:45,579 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:05:45,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:05:45,581 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:05:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:48,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:05:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:48,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:05:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:48,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:05:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:05:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:05:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:05:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:05:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:48,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:05:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:48,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:05:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:05:48,181 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:05:48,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641805690] [2022-01-31 20:05:48,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641805690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:05:48,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:05:48,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:05:48,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076577130] [2022-01-31 20:05:48,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:05:48,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:05:48,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:05:48,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:05:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2452, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:05:48,182 INFO L87 Difference]: Start difference. First operand 313 states and 446 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:05:55,178 INFO L93 Difference]: Finished difference Result 400 states and 541 transitions. [2022-01-31 20:05:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 20:05:55,178 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 111 [2022-01-31 20:05:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:05:55,179 INFO L225 Difference]: With dead ends: 400 [2022-01-31 20:05:55,179 INFO L226 Difference]: Without dead ends: 395 [2022-01-31 20:05:55,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3151 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1060, Invalid=11822, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 20:05:55,180 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 106 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 3450 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 3450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:05:55,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 146 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 3450 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 20:05:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-31 20:05:56,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 307. [2022-01-31 20:05:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 261 states have (on average 1.3524904214559388) internal successors, (353), 261 states have internal predecessors, (353), 43 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 20:05:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 437 transitions. [2022-01-31 20:05:56,255 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 437 transitions. Word has length 111 [2022-01-31 20:05:56,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:05:56,255 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 437 transitions. [2022-01-31 20:05:56,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 50 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-01-31 20:05:56,255 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 437 transitions. [2022-01-31 20:05:56,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 20:05:56,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:05:56,256 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:05:56,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 20:05:56,256 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:05:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:05:56,256 INFO L85 PathProgramCache]: Analyzing trace with hash -407939974, now seen corresponding path program 95 times [2022-01-31 20:05:56,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:05:56,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562564650] [2022-01-31 20:05:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:05:56,261 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:05:56,261 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:05:56,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:05:56,263 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:05:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:05:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:58,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 20:05:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 20:05:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:58,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:05:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 20:05:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:58,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 20:05:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 20:05:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:58,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 20:05:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 20:05:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:05:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:05:58,832 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:05:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562564650] [2022-01-31 20:05:58,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [562564650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:05:58,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:05:58,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 20:05:58,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570481303] [2022-01-31 20:05:58,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:05:58,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 20:05:58,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:05:58,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 20:05:58,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2542, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 20:05:58,833 INFO L87 Difference]: Start difference. First operand 307 states and 437 transitions. Second operand has 53 states, 53 states have (on average 1.320754716981132) internal successors, (70), 51 states have internal predecessors, (70), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9)