/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/array-industry-pattern/array_of_struct_ptr_cond_init.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-30 21:44:49,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-30 21:44:49,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-30 21:44:49,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-30 21:44:49,551 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 [2022-01-30 21:44:49,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-30 21:44:49,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-30 21:44:49,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-30 21:44:49,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-30 21:44:49,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-30 21:44:49,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-30 21:44:49,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-30 21:44:49,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-30 21:44:49,577 INFO L138 SettingsManager]: * Use SBE=true [2022-01-30 21:44:49,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-30 21:44:49,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-30 21:44:49,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-30 21:44:49,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-30 21:44:49,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-30 21:44:49,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-30 21:44:49,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-30 21:44:49,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-30 21:44:49,578 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-30 21:44:49,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-30 21:44:49,578 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-30 21:44:49,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-30 21:44:49,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-30 21:44:49,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-30 21:44:49,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-30 21:44:49,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-30 21:44:49,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-30 21:44:49,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-30 21:44:49,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-30 21:44:49,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-30 21:44:49,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-30 21:44:49,580 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-30 21:44:49,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-30 21:44:49,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-30 21:44:49,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-30 21:44:49,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-30 21:44:49,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-30 21:44:49,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-30 21:44:49,769 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-30 21:44:49,769 INFO L275 PluginConnector]: CDTParser initialized [2022-01-30 21:44:49,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_cond_init.i [2022-01-30 21:44:49,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5877f279e/422a2f7587974a5d9e89e3df354e6d8b/FLAG097c67084 [2022-01-30 21:44:50,174 INFO L306 CDTParser]: Found 1 translation units. [2022-01-30 21:44:50,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_cond_init.i [2022-01-30 21:44:50,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5877f279e/422a2f7587974a5d9e89e3df354e6d8b/FLAG097c67084 [2022-01-30 21:44:50,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5877f279e/422a2f7587974a5d9e89e3df354e6d8b [2022-01-30 21:44:50,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-30 21:44:50,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-30 21:44:50,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-30 21:44:50,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-30 21:44:50,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-30 21:44:50,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 09:44:50" (1/1) ... [2022-01-30 21:44:50,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b7304f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50, skipping insertion in model container [2022-01-30 21:44:50,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 09:44:50" (1/1) ... [2022-01-30 21:44:50,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-30 21:44:50,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-30 21:44:50,749 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-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2022-01-30 21:44:50,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-30 21:44:50,798 INFO L203 MainTranslator]: Completed pre-run [2022-01-30 21:44:50,809 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-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2022-01-30 21:44:50,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-30 21:44:50,823 INFO L208 MainTranslator]: Completed translation [2022-01-30 21:44:50,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50 WrapperNode [2022-01-30 21:44:50,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-30 21:44:50,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-30 21:44:50,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-30 21:44:50,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-30 21:44:50,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50" (1/1) ... [2022-01-30 21:44:50,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50" (1/1) ... [2022-01-30 21:44:50,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50" (1/1) ... [2022-01-30 21:44:50,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50" (1/1) ... [2022-01-30 21:44:50,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50" (1/1) ... [2022-01-30 21:44:50,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50" (1/1) ... [2022-01-30 21:44:50,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50" (1/1) ... [2022-01-30 21:44:50,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-30 21:44:50,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-30 21:44:50,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-30 21:44:50,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-30 21:44:50,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50" (1/1) ... [2022-01-30 21:44:50,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-30 21:44:50,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:44:50,928 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) [2022-01-30 21:44:50,934 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 [2022-01-30 21:44:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-30 21:44:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-30 21:44:50,966 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-30 21:44:50,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-30 21:44:50,966 INFO L138 BoogieDeclarations]: Found implementation of procedure user_read [2022-01-30 21:44:50,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-30 21:44:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-30 21:44:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-30 21:44:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-30 21:44:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-30 21:44:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-30 21:44:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-30 21:44:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-30 21:44:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-30 21:44:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure user_read [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-30 21:44:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-30 21:44:51,027 INFO L234 CfgBuilder]: Building ICFG [2022-01-30 21:44:51,028 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-30 21:44:51,116 INFO L275 CfgBuilder]: Performing block encoding [2022-01-30 21:44:51,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-30 21:44:51,120 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-30 21:44:51,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 09:44:51 BoogieIcfgContainer [2022-01-30 21:44:51,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-30 21:44:51,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-30 21:44:51,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-30 21:44:51,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-30 21:44:51,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 09:44:50" (1/3) ... [2022-01-30 21:44:51,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d9ea74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 09:44:51, skipping insertion in model container [2022-01-30 21:44:51,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:44:50" (2/3) ... [2022-01-30 21:44:51,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d9ea74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 09:44:51, skipping insertion in model container [2022-01-30 21:44:51,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 09:44:51" (3/3) ... [2022-01-30 21:44:51,135 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_cond_init.i [2022-01-30 21:44:51,138 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-30 21:44:51,138 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-30 21:44:51,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-30 21:44:51,168 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-30 21:44:51,168 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-30 21:44:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-30 21:44:51,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-30 21:44:51,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:44:51,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 21:44:51,181 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:44:51,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:44:51,184 INFO L85 PathProgramCache]: Analyzing trace with hash 25889909, now seen corresponding path program 1 times [2022-01-30 21:44:51,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:44:51,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158843983] [2022-01-30 21:44:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:44:51,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:44:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:51,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:44:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-30 21:44:51,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:44:51,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158843983] [2022-01-30 21:44:51,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158843983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-30 21:44:51,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-30 21:44:51,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-30 21:44:51,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078546167] [2022-01-30 21:44:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-30 21:44:51,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-30 21:44:51,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:44:51,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-30 21:44:51,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-30 21:44:51,354 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-30 21:44:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:44:51,417 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2022-01-30 21:44:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-30 21:44:51,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-30 21:44:51,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:44:51,424 INFO L225 Difference]: With dead ends: 61 [2022-01-30 21:44:51,424 INFO L226 Difference]: Without dead ends: 36 [2022-01-30 21:44:51,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-30 21:44:51,429 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-30 21:44:51,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 34 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-30 21:44:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-30 21:44:51,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2022-01-30 21:44:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-30 21:44:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-01-30 21:44:51,456 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 14 [2022-01-30 21:44:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:44:51,456 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-01-30 21:44:51,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-30 21:44:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-01-30 21:44:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-30 21:44:51,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:44:51,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 21:44:51,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-30 21:44:51,458 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:44:51,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:44:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash -346461340, now seen corresponding path program 1 times [2022-01-30 21:44:51,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:44:51,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628689116] [2022-01-30 21:44:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:44:51,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:44:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:51,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:44:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-30 21:44:51,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:44:51,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628689116] [2022-01-30 21:44:51,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628689116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-30 21:44:51,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-30 21:44:51,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-30 21:44:51,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65707065] [2022-01-30 21:44:51,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-30 21:44:51,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-30 21:44:51,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:44:51,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-30 21:44:51,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-30 21:44:51,514 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-30 21:44:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:44:51,582 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2022-01-30 21:44:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-30 21:44:51,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-30 21:44:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:44:51,583 INFO L225 Difference]: With dead ends: 50 [2022-01-30 21:44:51,584 INFO L226 Difference]: Without dead ends: 38 [2022-01-30 21:44:51,584 INFO L932 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 [2022-01-30 21:44:51,585 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-30 21:44:51,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 37 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-30 21:44:51,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-30 21:44:51,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2022-01-30 21:44:51,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-30 21:44:51,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-30 21:44:51,591 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 14 [2022-01-30 21:44:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:44:51,591 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-30 21:44:51,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-30 21:44:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-30 21:44:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-30 21:44:51,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:44:51,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 21:44:51,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-30 21:44:51,592 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:44:51,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:44:51,593 INFO L85 PathProgramCache]: Analyzing trace with hash -710905502, now seen corresponding path program 1 times [2022-01-30 21:44:51,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:44:51,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394857938] [2022-01-30 21:44:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:44:51,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:44:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:44:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-30 21:44:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-30 21:44:51,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:44:51,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394857938] [2022-01-30 21:44:51,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394857938] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 21:44:51,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898813768] [2022-01-30 21:44:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:44:51,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:44:51,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:44:51,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-30 21:44:51,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-30 21:44:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:51,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-30 21:44:51,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 21:44:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-30 21:44:51,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 21:44:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-30 21:44:52,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898813768] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 21:44:52,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 21:44:52,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-30 21:44:52,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806609807] [2022-01-30 21:44:52,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 21:44:52,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-30 21:44:52,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:44:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-30 21:44:52,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-30 21:44:52,005 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-30 21:44:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:44:52,133 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2022-01-30 21:44:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-30 21:44:52,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2022-01-30 21:44:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:44:52,137 INFO L225 Difference]: With dead ends: 74 [2022-01-30 21:44:52,137 INFO L226 Difference]: Without dead ends: 62 [2022-01-30 21:44:52,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-30 21:44:52,141 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 21:44:52,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 70 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 21:44:52,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-30 21:44:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2022-01-30 21:44:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-30 21:44:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-01-30 21:44:52,162 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 23 [2022-01-30 21:44:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:44:52,162 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-01-30 21:44:52,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-30 21:44:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-01-30 21:44:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-30 21:44:52,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:44:52,165 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 21:44:52,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-30 21:44:52,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:44:52,379 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:44:52,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:44:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash 715994852, now seen corresponding path program 2 times [2022-01-30 21:44:52,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:44:52,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144710958] [2022-01-30 21:44:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:44:52,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:44:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:52,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:44:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-30 21:44:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-30 21:44:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-30 21:44:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:52,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-30 21:44:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-30 21:44:52,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:44:52,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144710958] [2022-01-30 21:44:52,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144710958] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 21:44:52,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566164526] [2022-01-30 21:44:52,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-30 21:44:52,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:44:52,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:44:52,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-30 21:44:52,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-30 21:44:52,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-30 21:44:52,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-30 21:44:52,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-30 21:44:52,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 21:44:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-30 21:44:52,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 21:44:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-30 21:44:52,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566164526] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 21:44:52,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 21:44:52,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-01-30 21:44:52,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488619273] [2022-01-30 21:44:52,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 21:44:52,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-30 21:44:52,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:44:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-30 21:44:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-30 21:44:52,923 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-30 21:44:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:44:53,099 INFO L93 Difference]: Finished difference Result 140 states and 186 transitions. [2022-01-30 21:44:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-30 21:44:53,100 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 50 [2022-01-30 21:44:53,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:44:53,103 INFO L225 Difference]: With dead ends: 140 [2022-01-30 21:44:53,103 INFO L226 Difference]: Without dead ends: 128 [2022-01-30 21:44:53,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2022-01-30 21:44:53,108 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 194 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 21:44:53,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 108 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 21:44:53,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-01-30 21:44:53,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 82. [2022-01-30 21:44:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 65 states have (on average 1.2) internal successors, (78), 65 states have internal predecessors, (78), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-30 21:44:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2022-01-30 21:44:53,125 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 50 [2022-01-30 21:44:53,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:44:53,126 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2022-01-30 21:44:53,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-30 21:44:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2022-01-30 21:44:53,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-30 21:44:53,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:44:53,128 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 21:44:53,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-30 21:44:53,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-30 21:44:53,369 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:44:53,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:44:53,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1452449756, now seen corresponding path program 3 times [2022-01-30 21:44:53,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:44:53,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809382452] [2022-01-30 21:44:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:44:53,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:44:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:44:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-30 21:44:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-30 21:44:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-30 21:44:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-30 21:44:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-30 21:44:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-30 21:44:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-30 21:44:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-30 21:44:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-30 21:44:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-30 21:44:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:44:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-01-30 21:44:53,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:44:53,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809382452] [2022-01-30 21:44:53,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809382452] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 21:44:53,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314431162] [2022-01-30 21:44:53,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-30 21:44:53,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:44:53,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:44:53,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-30 21:44:53,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process