/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 02:32:52,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 02:32:52,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 02:32:52,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 02:32:52,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-20 02:32:52,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 02:32:52,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 02:32:52,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-20 02:32:52,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-20 02:32:52,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 02:32:52,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 02:32:52,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 02:32:52,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 02:32:52,729 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 02:32:52,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 02:32:52,730 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 02:32:52,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 02:32:52,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 02:32:52,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 02:32:52,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 02:32:52,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 02:32:52,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 02:32:52,731 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 02:32:52,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 02:32:52,731 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 02:32:52,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 02:32:52,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 02:32:52,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 02:32:52,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 02:32:52,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 02:32:52,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 02:32:52,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 02:32:52,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 02:32:52,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 02:32:52,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 02:32:52,733 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-20 02:32:52,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-20 02:32:52,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 02:32:52,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 02:32:52,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 02:32:52,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 02:32:52,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 02:32:53,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 02:32:53,001 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 02:32:53,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c [2022-03-20 02:32:53,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b8f87177/af2239bd3e514de892fc37eef692e7e6/FLAG8e77ae336 [2022-03-20 02:32:53,530 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 02:32:53,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c [2022-03-20 02:32:53,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b8f87177/af2239bd3e514de892fc37eef692e7e6/FLAG8e77ae336 [2022-03-20 02:32:53,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b8f87177/af2239bd3e514de892fc37eef692e7e6 [2022-03-20 02:32:53,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 02:32:53,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 02:32:53,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 02:32:53,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 02:32:53,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 02:32:53,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 02:32:53" (1/1) ... [2022-03-20 02:32:53,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c84aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:53, skipping insertion in model container [2022-03-20 02:32:53,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 02:32:53" (1/1) ... [2022-03-20 02:32:53,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 02:32:53,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 02:32:54,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2022-03-20 02:32:54,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 02:32:54,121 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 02:32:54,140 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2022-03-20 02:32:54,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 02:32:54,151 INFO L208 MainTranslator]: Completed translation [2022-03-20 02:32:54,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:54 WrapperNode [2022-03-20 02:32:54,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 02:32:54,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 02:32:54,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 02:32:54,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 02:32:54,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:54" (1/1) ... [2022-03-20 02:32:54,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:54" (1/1) ... [2022-03-20 02:32:54,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:54" (1/1) ... [2022-03-20 02:32:54,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:54" (1/1) ... [2022-03-20 02:32:54,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:54" (1/1) ... [2022-03-20 02:32:54,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:54" (1/1) ... [2022-03-20 02:32:54,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:54" (1/1) ... [2022-03-20 02:32:54,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 02:32:54,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 02:32:54,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 02:32:54,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 02:32:54,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:54" (1/1) ... [2022-03-20 02:32:54,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 02:32:54,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:32:54,218 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) [2022-03-20 02:32:54,242 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 [2022-03-20 02:32:54,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 02:32:54,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 02:32:54,266 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 02:32:54,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 02:32:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 02:32:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 02:32:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 02:32:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 02:32:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 02:32:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 02:32:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 02:32:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 02:32:54,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 02:32:54,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 02:32:54,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 02:32:54,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 02:32:54,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 02:32:54,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 02:32:54,325 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 02:32:54,327 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 02:32:54,492 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 02:32:54,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 02:32:54,507 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 02:32:54,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 02:32:54 BoogieIcfgContainer [2022-03-20 02:32:54,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 02:32:54,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 02:32:54,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 02:32:54,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 02:32:54,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 02:32:53" (1/3) ... [2022-03-20 02:32:54,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84d2eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 02:32:54, skipping insertion in model container [2022-03-20 02:32:54,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:32:54" (2/3) ... [2022-03-20 02:32:54,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84d2eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 02:32:54, skipping insertion in model container [2022-03-20 02:32:54,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 02:32:54" (3/3) ... [2022-03-20 02:32:54,546 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2022-03-20 02:32:54,551 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 02:32:54,551 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 02:32:54,623 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 02:32:54,632 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-03-20 02:32:54,632 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 02:32:54,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 02:32:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-20 02:32:54,664 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:54,665 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:32:54,666 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:54,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:54,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1468663722, now seen corresponding path program 1 times [2022-03-20 02:32:54,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:54,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320084877] [2022-03-20 02:32:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:54,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:32:54,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:54,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320084877] [2022-03-20 02:32:54,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320084877] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:54,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:54,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:54,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582688240] [2022-03-20 02:32:54,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:54,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:54,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:54,931 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:55,072 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2022-03-20 02:32:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:55,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-03-20 02:32:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:55,087 INFO L225 Difference]: With dead ends: 70 [2022-03-20 02:32:55,088 INFO L226 Difference]: Without dead ends: 39 [2022-03-20 02:32:55,091 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:55,095 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 79 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:55,095 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 44 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:55,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-20 02:32:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-03-20 02:32:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-03-20 02:32:55,136 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 9 [2022-03-20 02:32:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:55,136 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-03-20 02:32:55,137 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-03-20 02:32:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 02:32:55,139 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:55,139 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:32:55,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 02:32:55,140 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash -968056640, now seen corresponding path program 1 times [2022-03-20 02:32:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:55,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859113124] [2022-03-20 02:32:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:55,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:32:55,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:55,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859113124] [2022-03-20 02:32:55,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859113124] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:55,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:55,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:55,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81332912] [2022-03-20 02:32:55,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:55,226 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:55,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:55,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:55,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:55,227 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:55,309 INFO L93 Difference]: Finished difference Result 70 states and 103 transitions. [2022-03-20 02:32:55,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:55,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-20 02:32:55,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:55,312 INFO L225 Difference]: With dead ends: 70 [2022-03-20 02:32:55,312 INFO L226 Difference]: Without dead ends: 52 [2022-03-20 02:32:55,317 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:55,318 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:55,319 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-20 02:32:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-03-20 02:32:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2022-03-20 02:32:55,335 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 14 [2022-03-20 02:32:55,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:55,336 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2022-03-20 02:32:55,336 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2022-03-20 02:32:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-20 02:32:55,337 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:55,337 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:32:55,337 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 02:32:55,338 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1990721020, now seen corresponding path program 1 times [2022-03-20 02:32:55,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:55,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647924228] [2022-03-20 02:32:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:55,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:55,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:32:55,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:55,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647924228] [2022-03-20 02:32:55,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647924228] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:55,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:55,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:55,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357404071] [2022-03-20 02:32:55,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:55,422 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:55,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:55,423 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:55,501 INFO L93 Difference]: Finished difference Result 93 states and 131 transitions. [2022-03-20 02:32:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:55,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-03-20 02:32:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:55,503 INFO L225 Difference]: With dead ends: 93 [2022-03-20 02:32:55,503 INFO L226 Difference]: Without dead ends: 62 [2022-03-20 02:32:55,504 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:55,505 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 32 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:55,505 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 43 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-20 02:32:55,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2022-03-20 02:32:55,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.375) internal successors, (77), 56 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2022-03-20 02:32:55,516 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 21 [2022-03-20 02:32:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:55,517 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2022-03-20 02:32:55,517 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,517 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2022-03-20 02:32:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-20 02:32:55,518 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:55,518 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:32:55,518 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 02:32:55,518 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:55,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:55,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1603181698, now seen corresponding path program 1 times [2022-03-20 02:32:55,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:55,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246072306] [2022-03-20 02:32:55,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:55,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:55,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 02:32:55,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:55,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246072306] [2022-03-20 02:32:55,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246072306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:55,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:55,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:55,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458745994] [2022-03-20 02:32:55,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:55,626 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:55,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:55,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:55,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:55,627 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:55,737 INFO L93 Difference]: Finished difference Result 120 states and 167 transitions. [2022-03-20 02:32:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:55,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-03-20 02:32:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:55,739 INFO L225 Difference]: With dead ends: 120 [2022-03-20 02:32:55,739 INFO L226 Difference]: Without dead ends: 81 [2022-03-20 02:32:55,739 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:55,740 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 51 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:55,741 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 53 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 02:32:55,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-03-20 02:32:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-03-20 02:32:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 75 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 106 transitions. [2022-03-20 02:32:55,763 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 106 transitions. Word has length 21 [2022-03-20 02:32:55,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:55,764 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 106 transitions. [2022-03-20 02:32:55,764 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,764 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 106 transitions. [2022-03-20 02:32:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-20 02:32:55,765 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:55,765 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:32:55,765 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 02:32:55,766 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:55,766 INFO L85 PathProgramCache]: Analyzing trace with hash 351223625, now seen corresponding path program 1 times [2022-03-20 02:32:55,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:55,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579569050] [2022-03-20 02:32:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:55,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:55,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 02:32:55,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:55,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579569050] [2022-03-20 02:32:55,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579569050] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:55,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:55,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:55,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169284235] [2022-03-20 02:32:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:55,833 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:55,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:55,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:55,834 INFO L87 Difference]: Start difference. First operand 79 states and 106 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:55,910 INFO L93 Difference]: Finished difference Result 148 states and 201 transitions. [2022-03-20 02:32:55,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:55,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-03-20 02:32:55,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:55,912 INFO L225 Difference]: With dead ends: 148 [2022-03-20 02:32:55,912 INFO L226 Difference]: Without dead ends: 61 [2022-03-20 02:32:55,912 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:55,914 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:55,915 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 41 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 02:32:55,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-03-20 02:32:55,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-03-20 02:32:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2022-03-20 02:32:55,923 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 24 [2022-03-20 02:32:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:55,924 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2022-03-20 02:32:55,924 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2022-03-20 02:32:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 02:32:55,925 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:32:55,925 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:32:55,925 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 02:32:55,925 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:32:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:32:55,926 INFO L85 PathProgramCache]: Analyzing trace with hash 322478086, now seen corresponding path program 1 times [2022-03-20 02:32:55,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:32:55,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567304395] [2022-03-20 02:32:55,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:32:55,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:32:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:32:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:32:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-20 02:32:56,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:32:56,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567304395] [2022-03-20 02:32:56,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567304395] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:32:56,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:32:56,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 02:32:56,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050254408] [2022-03-20 02:32:56,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:32:56,022 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:32:56,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:32:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:32:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 02:32:56,023 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:56,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:32:56,069 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2022-03-20 02:32:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:32:56,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-03-20 02:32:56,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:32:56,070 INFO L225 Difference]: With dead ends: 92 [2022-03-20 02:32:56,071 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 02:32:56,073 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:32:56,076 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 36 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 02:32:56,078 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 02:32:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 02:32:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 02:32:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 02:32:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 02:32:56,079 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2022-03-20 02:32:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:32:56,079 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 02:32:56,079 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 02:32:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 02:32:56,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 02:32:56,083 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 02:32:56,083 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 02:32:56,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 02:32:56,208 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 13) no Hoare annotation was computed. [2022-03-20 02:32:56,209 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 13) no Hoare annotation was computed. [2022-03-20 02:32:56,209 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 13) no Hoare annotation was computed. [2022-03-20 02:32:56,209 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 20 152) no Hoare annotation was computed. [2022-03-20 02:32:56,209 INFO L882 garLoopResultBuilder]: For program point L89-1(lines 65 118) no Hoare annotation was computed. [2022-03-20 02:32:56,209 INFO L882 garLoopResultBuilder]: For program point L81(lines 81 85) no Hoare annotation was computed. [2022-03-20 02:32:56,210 INFO L882 garLoopResultBuilder]: For program point L36(lines 36 139) no Hoare annotation was computed. [2022-03-20 02:32:56,210 INFO L882 garLoopResultBuilder]: For program point L69-1(lines 65 118) no Hoare annotation was computed. [2022-03-20 02:32:56,210 INFO L882 garLoopResultBuilder]: For program point L61(lines 61 120) no Hoare annotation was computed. [2022-03-20 02:32:56,211 INFO L882 garLoopResultBuilder]: For program point L57(lines 57 122) no Hoare annotation was computed. [2022-03-20 02:32:56,211 INFO L885 garLoopResultBuilder]: At program point L148(lines 20 152) the Hoare annotation is: true [2022-03-20 02:32:56,211 INFO L878 garLoopResultBuilder]: At program point L111(lines 29 146) the Hoare annotation is: (or (= main_~blastFlag~0 0) (and (= 3 main_~blastFlag~0) (not (= main_~s__hit~0 0)) (<= 8640 main_~s__state~0)) (= 2 main_~blastFlag~0)) [2022-03-20 02:32:56,211 INFO L882 garLoopResultBuilder]: For program point L107(lines 107 109) no Hoare annotation was computed. [2022-03-20 02:32:56,211 INFO L882 garLoopResultBuilder]: For program point L41(lines 41 136) no Hoare annotation was computed. [2022-03-20 02:32:56,211 INFO L878 garLoopResultBuilder]: At program point L37(lines 36 139) the Hoare annotation is: (or (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-20 02:32:56,212 INFO L878 garLoopResultBuilder]: At program point L62(lines 61 120) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and .cse0 (= 2 main_~blastFlag~0)) (and (= 3 main_~blastFlag~0) (not (= main_~s__hit~0 0)) .cse0) (and (= main_~blastFlag~0 0) .cse0))) [2022-03-20 02:32:56,213 INFO L878 garLoopResultBuilder]: At program point L58(lines 57 122) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and .cse0 (= 2 main_~blastFlag~0)) (and (= 3 main_~blastFlag~0) (not (= main_~s__hit~0 0)) .cse0) (and (= main_~blastFlag~0 0) .cse0))) [2022-03-20 02:32:56,213 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 20 152) no Hoare annotation was computed. [2022-03-20 02:32:56,213 INFO L878 garLoopResultBuilder]: At program point L108(lines 20 152) the Hoare annotation is: false [2022-03-20 02:32:56,213 INFO L878 garLoopResultBuilder]: At program point L42(lines 41 136) the Hoare annotation is: (let ((.cse0 (= (+ (- 8512) main_~s__state~0) 0))) (or (and (= (+ (- 2) main_~blastFlag~0) 0) .cse0) (and (= main_~blastFlag~0 0) .cse0))) [2022-03-20 02:32:56,213 INFO L882 garLoopResultBuilder]: For program point L104-1(lines 65 118) no Hoare annotation was computed. [2022-03-20 02:32:56,213 INFO L882 garLoopResultBuilder]: For program point L100-1(lines 65 118) no Hoare annotation was computed. [2022-03-20 02:32:56,214 INFO L882 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 150) no Hoare annotation was computed. [2022-03-20 02:32:56,214 INFO L882 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2022-03-20 02:32:56,214 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 20 152) the Hoare annotation is: true [2022-03-20 02:32:56,214 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 02:32:56,214 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 02:32:56,214 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 02:32:56,214 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 02:32:56,214 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 02:32:56,214 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 02:32:56,215 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 02:32:56,219 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-03-20 02:32:56,220 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 02:32:56,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 02:32:56 BoogieIcfgContainer [2022-03-20 02:32:56,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 02:32:56,242 INFO L158 Benchmark]: Toolchain (without parser) took 2321.49ms. Allocated memory was 190.8MB in the beginning and 254.8MB in the end (delta: 64.0MB). Free memory was 163.9MB in the beginning and 198.4MB in the end (delta: -34.5MB). Peak memory consumption was 28.7MB. Max. memory is 8.0GB. [2022-03-20 02:32:56,242 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 157.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 02:32:56,243 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.93ms. Allocated memory is still 190.8MB. Free memory was 163.7MB in the beginning and 169.4MB in the end (delta: -5.7MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2022-03-20 02:32:56,244 INFO L158 Benchmark]: Boogie Preprocessor took 25.89ms. Allocated memory is still 190.8MB. Free memory was 169.4MB in the beginning and 167.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 02:32:56,244 INFO L158 Benchmark]: RCFGBuilder took 329.62ms. Allocated memory is still 190.8MB. Free memory was 167.9MB in the beginning and 157.1MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 02:32:56,245 INFO L158 Benchmark]: TraceAbstraction took 1731.28ms. Allocated memory was 190.8MB in the beginning and 254.8MB in the end (delta: 64.0MB). Free memory was 156.6MB in the beginning and 198.4MB in the end (delta: -41.8MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. [2022-03-20 02:32:56,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 157.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.93ms. Allocated memory is still 190.8MB. Free memory was 163.7MB in the beginning and 169.4MB in the end (delta: -5.7MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.89ms. Allocated memory is still 190.8MB. Free memory was 169.4MB in the beginning and 167.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 329.62ms. Allocated memory is still 190.8MB. Free memory was 167.9MB in the beginning and 157.1MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1731.28ms. Allocated memory was 190.8MB in the beginning and 254.8MB in the end (delta: 64.0MB). Free memory was 156.6MB in the beginning and 198.4MB in the end (delta: -41.8MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 150]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 286 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 286 mSDsluCounter, 271 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 185 IncrementalHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 227 mSDtfsCounter, 185 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=4, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 32 NumberOfFragments, 112 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 72 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 43/43 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 && -8512 + s__state == 0) || (blastFlag == 0 && -8512 + s__state == 0) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (blastFlag == 0 || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || 2 == blastFlag - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((8640 <= s__state && 2 == blastFlag) || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || (blastFlag == 0 && 8640 <= s__state) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((8640 <= s__state && 2 == blastFlag) || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || (blastFlag == 0 && 8640 <= s__state) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: -2 + blastFlag == 0 || blastFlag == 0 RESULT: Ultimate proved your program to be correct! [2022-03-20 02:32:56,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...