/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-simple/nested_6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 01:41:11,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 01:41:11,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 01:41:11,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 01:41:11,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 01:41:11,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 01:41:11,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 01:41:11,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-16 01:41:11,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 01:41:11,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 01:41:11,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 01:41:11,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 01:41:11,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 01:41:11,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 01:41:11,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 01:41:11,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 01:41:11,991 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 01:41:11,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 01:41:11,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 01:41:11,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 01:41:11,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 01:41:11,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 01:41:11,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 01:41:11,994 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 01:41:11,994 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 01:41:11,994 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 01:41:11,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 01:41:11,994 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 01:41:11,995 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 01:41:11,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 01:41:11,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 01:41:11,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 01:41:11,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 01:41:11,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 01:41:11,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 01:41:11,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 01:41:11,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 01:41:11,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 01:41:11,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 01:41:12,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 01:41:12,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 01:41:12,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 01:41:12,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 01:41:12,511 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 01:41:12,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-simple/nested_6.c [2022-10-16 01:41:12,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6b272246/a5533d2b1d274c6b802bef0e34436227/FLAGeb9f107cd [2022-10-16 01:41:13,383 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 01:41:13,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-simple/nested_6.c [2022-10-16 01:41:13,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6b272246/a5533d2b1d274c6b802bef0e34436227/FLAGeb9f107cd [2022-10-16 01:41:13,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6b272246/a5533d2b1d274c6b802bef0e34436227 [2022-10-16 01:41:13,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 01:41:13,743 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 01:41:13,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 01:41:13,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 01:41:13,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 01:41:13,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:13" (1/1) ... [2022-10-16 01:41:13,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d5ae26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:13, skipping insertion in model container [2022-10-16 01:41:13,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:13" (1/1) ... [2022-10-16 01:41:13,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 01:41:13,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 01:41:13,954 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-simple/nested_6.c[959,972] [2022-10-16 01:41:13,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 01:41:13,971 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 01:41:13,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-simple/nested_6.c[959,972] [2022-10-16 01:41:13,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 01:41:14,022 INFO L208 MainTranslator]: Completed translation [2022-10-16 01:41:14,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14 WrapperNode [2022-10-16 01:41:14,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 01:41:14,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 01:41:14,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 01:41:14,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 01:41:14,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,089 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 68 [2022-10-16 01:41:14,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 01:41:14,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 01:41:14,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 01:41:14,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 01:41:14,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,137 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 01:41:14,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 01:41:14,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 01:41:14,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 01:41:14,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (1/1) ... [2022-10-16 01:41:14,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 01:41:14,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:41:14,181 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) [2022-10-16 01:41:14,189 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 [2022-10-16 01:41:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 01:41:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 01:41:14,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 01:41:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 01:41:14,316 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 01:41:14,319 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 01:41:14,524 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 01:41:14,542 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 01:41:14,542 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-16 01:41:14,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:14 BoogieIcfgContainer [2022-10-16 01:41:14,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 01:41:14,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 01:41:14,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 01:41:14,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 01:41:14,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:41:13" (1/3) ... [2022-10-16 01:41:14,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c85c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:14, skipping insertion in model container [2022-10-16 01:41:14,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:14" (2/3) ... [2022-10-16 01:41:14,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c85c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:14, skipping insertion in model container [2022-10-16 01:41:14,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:14" (3/3) ... [2022-10-16 01:41:14,570 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_6.c [2022-10-16 01:41:14,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 01:41:14,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-16 01:41:14,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 01:41:14,681 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b3baacf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 01:41:14,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-16 01:41:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 21 states have internal predecessors, (34), 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) [2022-10-16 01:41:14,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 01:41:14,697 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:14,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 01:41:14,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:14,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:14,708 INFO L85 PathProgramCache]: Analyzing trace with hash 28698918, now seen corresponding path program 1 times [2022-10-16 01:41:14,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:14,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071542415] [2022-10-16 01:41:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:14,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:15,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:15,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071542415] [2022-10-16 01:41:15,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071542415] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 01:41:15,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 01:41:15,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 01:41:15,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961391747] [2022-10-16 01:41:15,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 01:41:15,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 01:41:15,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 01:41:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 01:41:15,052 INFO L87 Difference]: Start difference. First operand has 22 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 21 states have internal predecessors, (34), 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-10-16 01:41:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:15,095 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2022-10-16 01:41:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 01:41:15,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-10-16 01:41:15,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:15,109 INFO L225 Difference]: With dead ends: 34 [2022-10-16 01:41:15,109 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 01:41:15,111 INFO L412 NwaCegarLoop]: 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 [2022-10-16 01:41:15,117 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:15,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:41:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 01:41:15,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 21. [2022-10-16 01:41:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 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) [2022-10-16 01:41:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-10-16 01:41:15,159 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 5 [2022-10-16 01:41:15,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:15,159 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-10-16 01:41:15,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-10-16 01:41:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-10-16 01:41:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 01:41:15,160 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:15,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:41:15,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 01:41:15,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash 270775882, now seen corresponding path program 1 times [2022-10-16 01:41:15,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:15,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011414243] [2022-10-16 01:41:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:15,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:15,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:15,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011414243] [2022-10-16 01:41:15,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011414243] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 01:41:15,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 01:41:15,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 01:41:15,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430664007] [2022-10-16 01:41:15,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 01:41:15,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 01:41:15,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:15,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 01:41:15,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 01:41:15,266 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-10-16 01:41:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:15,305 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-10-16 01:41:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 01:41:15,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2022-10-16 01:41:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:15,307 INFO L225 Difference]: With dead ends: 31 [2022-10-16 01:41:15,307 INFO L226 Difference]: Without dead ends: 31 [2022-10-16 01:41:15,311 INFO L412 NwaCegarLoop]: 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 [2022-10-16 01:41:15,313 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:15,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:41:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-10-16 01:41:15,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2022-10-16 01:41:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 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) [2022-10-16 01:41:15,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-10-16 01:41:15,326 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 8 [2022-10-16 01:41:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:15,328 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-10-16 01:41:15,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-10-16 01:41:15,329 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-10-16 01:41:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 01:41:15,329 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:15,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:41:15,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 01:41:15,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:15,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1936160826, now seen corresponding path program 1 times [2022-10-16 01:41:15,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:15,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826562867] [2022-10-16 01:41:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:15,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:15,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:15,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826562867] [2022-10-16 01:41:15,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826562867] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 01:41:15,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 01:41:15,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 01:41:15,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392626727] [2022-10-16 01:41:15,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 01:41:15,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 01:41:15,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:15,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 01:41:15,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 01:41:15,443 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-10-16 01:41:15,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:15,462 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-10-16 01:41:15,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 01:41:15,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2022-10-16 01:41:15,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:15,463 INFO L225 Difference]: With dead ends: 30 [2022-10-16 01:41:15,464 INFO L226 Difference]: Without dead ends: 30 [2022-10-16 01:41:15,464 INFO L412 NwaCegarLoop]: 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 [2022-10-16 01:41:15,466 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:15,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:41:15,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-16 01:41:15,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2022-10-16 01:41:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 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) [2022-10-16 01:41:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-10-16 01:41:15,473 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 11 [2022-10-16 01:41:15,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:15,474 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-10-16 01:41:15,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-10-16 01:41:15,474 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-10-16 01:41:15,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 01:41:15,475 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:15,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:41:15,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 01:41:15,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:15,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:15,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1227454858, now seen corresponding path program 1 times [2022-10-16 01:41:15,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:15,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069342414] [2022-10-16 01:41:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:15,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:15,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:15,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069342414] [2022-10-16 01:41:15,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069342414] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 01:41:15,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 01:41:15,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 01:41:15,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659554272] [2022-10-16 01:41:15,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 01:41:15,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 01:41:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:15,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 01:41:15,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 01:41:15,602 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-10-16 01:41:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:15,618 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-10-16 01:41:15,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 01:41:15,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2022-10-16 01:41:15,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:15,619 INFO L225 Difference]: With dead ends: 29 [2022-10-16 01:41:15,619 INFO L226 Difference]: Without dead ends: 29 [2022-10-16 01:41:15,620 INFO L412 NwaCegarLoop]: 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 [2022-10-16 01:41:15,622 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:15,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:41:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-16 01:41:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-10-16 01:41:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 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) [2022-10-16 01:41:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-10-16 01:41:15,628 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 14 [2022-10-16 01:41:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:15,628 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-10-16 01:41:15,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-10-16 01:41:15,629 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-10-16 01:41:15,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 01:41:15,629 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:15,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:41:15,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 01:41:15,630 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:15,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:15,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1691120258, now seen corresponding path program 1 times [2022-10-16 01:41:15,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:15,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863756891] [2022-10-16 01:41:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:15,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:15,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:15,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863756891] [2022-10-16 01:41:15,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863756891] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 01:41:15,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 01:41:15,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 01:41:15,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732945232] [2022-10-16 01:41:15,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 01:41:15,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 01:41:15,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:15,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 01:41:15,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 01:41:15,696 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-10-16 01:41:15,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:15,711 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2022-10-16 01:41:15,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 01:41:15,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) Word has length 17 [2022-10-16 01:41:15,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:15,713 INFO L225 Difference]: With dead ends: 28 [2022-10-16 01:41:15,713 INFO L226 Difference]: Without dead ends: 28 [2022-10-16 01:41:15,713 INFO L412 NwaCegarLoop]: 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 [2022-10-16 01:41:15,715 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:15,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:41:15,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-16 01:41:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-10-16 01:41:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 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) [2022-10-16 01:41:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-10-16 01:41:15,721 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 17 [2022-10-16 01:41:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:15,722 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-10-16 01:41:15,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-10-16 01:41:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-10-16 01:41:15,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 01:41:15,723 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:15,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:41:15,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 01:41:15,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1077656366, now seen corresponding path program 1 times [2022-10-16 01:41:15,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:15,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418006959] [2022-10-16 01:41:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:15,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:15,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:15,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:15,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418006959] [2022-10-16 01:41:15,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418006959] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 01:41:15,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 01:41:15,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 01:41:15,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057214896] [2022-10-16 01:41:15,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 01:41:15,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 01:41:15,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:15,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 01:41:15,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 01:41:15,803 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-10-16 01:41:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:15,819 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-10-16 01:41:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 01:41:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) Word has length 20 [2022-10-16 01:41:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:15,821 INFO L225 Difference]: With dead ends: 27 [2022-10-16 01:41:15,821 INFO L226 Difference]: Without dead ends: 27 [2022-10-16 01:41:15,822 INFO L412 NwaCegarLoop]: 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 [2022-10-16 01:41:15,823 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:15,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:41:15,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-16 01:41:15,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-10-16 01:41:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 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) [2022-10-16 01:41:15,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-10-16 01:41:15,829 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 20 [2022-10-16 01:41:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:15,830 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-10-16 01:41:15,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-10-16 01:41:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-10-16 01:41:15,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-16 01:41:15,832 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:15,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:41:15,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 01:41:15,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:15,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:15,834 INFO L85 PathProgramCache]: Analyzing trace with hash -624839792, now seen corresponding path program 1 times [2022-10-16 01:41:15,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:15,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737828205] [2022-10-16 01:41:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:15,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:15,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:15,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737828205] [2022-10-16 01:41:15,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737828205] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 01:41:15,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600712693] [2022-10-16 01:41:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:15,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:41:15,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:41:15,924 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) [2022-10-16 01:41:15,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 01:41:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:15,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 01:41:15,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 01:41:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:16,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 01:41:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:16,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600712693] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 01:41:16,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 01:41:16,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-16 01:41:16,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921294609] [2022-10-16 01:41:16,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 01:41:16,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 01:41:16,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 01:41:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-16 01:41:16,085 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2022-10-16 01:41:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:16,124 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-10-16 01:41:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 01:41:16,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) Word has length 22 [2022-10-16 01:41:16,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:16,126 INFO L225 Difference]: With dead ends: 32 [2022-10-16 01:41:16,126 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 01:41:16,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-16 01:41:16,128 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:16,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:41:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 01:41:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-16 01:41:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 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) [2022-10-16 01:41:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-10-16 01:41:16,135 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 22 [2022-10-16 01:41:16,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:16,136 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-10-16 01:41:16,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2022-10-16 01:41:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-10-16 01:41:16,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 01:41:16,138 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:16,138 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:41:16,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 01:41:16,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:41:16,353 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:16,355 INFO L85 PathProgramCache]: Analyzing trace with hash -222481718, now seen corresponding path program 2 times [2022-10-16 01:41:16,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:16,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049480598] [2022-10-16 01:41:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:16,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 01:41:16,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:16,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049480598] [2022-10-16 01:41:16,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049480598] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 01:41:16,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237751438] [2022-10-16 01:41:16,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 01:41:16,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:41:16,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:41:16,425 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) [2022-10-16 01:41:16,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 01:41:16,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 01:41:16,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 01:41:16,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 01:41:16,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 01:41:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:16,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 01:41:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:41:16,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237751438] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 01:41:16,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 01:41:16,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 10 [2022-10-16 01:41:16,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689475968] [2022-10-16 01:41:16,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 01:41:16,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 01:41:16,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:16,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 01:41:16,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-10-16 01:41:16,638 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) [2022-10-16 01:41:16,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:16,805 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2022-10-16 01:41:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 01:41:16,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) Word has length 28 [2022-10-16 01:41:16,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:16,807 INFO L225 Difference]: With dead ends: 65 [2022-10-16 01:41:16,807 INFO L226 Difference]: Without dead ends: 65 [2022-10-16 01:41:16,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2022-10-16 01:41:16,809 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:16,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 104 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:41:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-10-16 01:41:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2022-10-16 01:41:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.163265306122449) internal successors, (57), 50 states have internal predecessors, (57), 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) [2022-10-16 01:41:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-10-16 01:41:16,817 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 28 [2022-10-16 01:41:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:16,818 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-10-16 01:41:16,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) [2022-10-16 01:41:16,819 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-10-16 01:41:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-16 01:41:16,820 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:16,820 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:41:16,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 01:41:17,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-16 01:41:17,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:17,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1455035518, now seen corresponding path program 3 times [2022-10-16 01:41:17,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:17,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013363097] [2022-10-16 01:41:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:17,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-10-16 01:41:17,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:17,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013363097] [2022-10-16 01:41:17,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013363097] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 01:41:17,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960151392] [2022-10-16 01:41:17,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 01:41:17,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:41:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:41:17,164 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) [2022-10-16 01:41:17,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 01:41:17,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 01:41:17,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 01:41:17,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 01:41:17,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 01:41:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-10-16 01:41:17,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 01:41:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-10-16 01:41:17,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960151392] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 01:41:17,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 01:41:17,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-10-16 01:41:17,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276004554] [2022-10-16 01:41:17,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 01:41:17,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 01:41:17,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:17,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 01:41:17,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-16 01:41:17,419 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-10-16 01:41:17,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:17,546 INFO L93 Difference]: Finished difference Result 437 states and 485 transitions. [2022-10-16 01:41:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 01:41:17,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) Word has length 47 [2022-10-16 01:41:17,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:17,550 INFO L225 Difference]: With dead ends: 437 [2022-10-16 01:41:17,550 INFO L226 Difference]: Without dead ends: 437 [2022-10-16 01:41:17,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2022-10-16 01:41:17,552 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 176 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:17,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 104 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 01:41:17,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-10-16 01:41:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 309. [2022-10-16 01:41:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.1237785016286646) internal successors, (345), 308 states have internal predecessors, (345), 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) [2022-10-16 01:41:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 345 transitions. [2022-10-16 01:41:17,580 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 345 transitions. Word has length 47 [2022-10-16 01:41:17,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:17,580 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 345 transitions. [2022-10-16 01:41:17,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-10-16 01:41:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 345 transitions. [2022-10-16 01:41:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-10-16 01:41:17,595 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:17,596 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 16, 16, 16, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 01:41:17,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 01:41:17,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:41:17,811 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash -107592410, now seen corresponding path program 4 times [2022-10-16 01:41:17,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:17,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465021538] [2022-10-16 01:41:17,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:17,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11350 backedges. 4301 proven. 1 refuted. 0 times theorem prover too weak. 7048 trivial. 0 not checked. [2022-10-16 01:41:18,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:18,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465021538] [2022-10-16 01:41:18,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465021538] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 01:41:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692406077] [2022-10-16 01:41:18,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 01:41:18,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:41:18,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:41:18,203 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 01:41:18,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 01:41:18,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 01:41:18,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 01:41:18,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 01:41:18,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 01:41:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11350 backedges. 2500 proven. 89 refuted. 0 times theorem prover too weak. 8761 trivial. 0 not checked. [2022-10-16 01:41:18,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 01:41:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11350 backedges. 2500 proven. 89 refuted. 0 times theorem prover too weak. 8761 trivial. 0 not checked. [2022-10-16 01:41:18,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692406077] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 01:41:18,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 01:41:18,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2022-10-16 01:41:18,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149995257] [2022-10-16 01:41:18,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 01:41:18,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 01:41:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:18,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 01:41:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-10-16 01:41:18,571 INFO L87 Difference]: Start difference. First operand 309 states and 345 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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) [2022-10-16 01:41:18,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:18,742 INFO L93 Difference]: Finished difference Result 2297 states and 2485 transitions. [2022-10-16 01:41:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 01:41:18,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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) Word has length 305 [2022-10-16 01:41:18,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:18,753 INFO L225 Difference]: With dead ends: 2297 [2022-10-16 01:41:18,754 INFO L226 Difference]: Without dead ends: 2297 [2022-10-16 01:41:18,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2022-10-16 01:41:18,755 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 168 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:18,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 107 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 01:41:18,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-10-16 01:41:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1545. [2022-10-16 01:41:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1543 states have (on average 1.084251458198315) internal successors, (1673), 1544 states have internal predecessors, (1673), 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) [2022-10-16 01:41:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1673 transitions. [2022-10-16 01:41:18,824 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1673 transitions. Word has length 305 [2022-10-16 01:41:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:18,825 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 1673 transitions. [2022-10-16 01:41:18,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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) [2022-10-16 01:41:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1673 transitions. [2022-10-16 01:41:18,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1542 [2022-10-16 01:41:18,908 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:18,909 INFO L195 NwaCegarLoop]: trace histogram [576, 576, 96, 96, 96, 16, 16, 16, 8, 8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 01:41:18,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 01:41:19,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:41:19,122 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:19,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1672164490, now seen corresponding path program 5 times [2022-10-16 01:41:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:19,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973165025] [2022-10-16 01:41:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:19,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:41:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 402372 backedges. 151174 proven. 1 refuted. 0 times theorem prover too weak. 251197 trivial. 0 not checked. [2022-10-16 01:41:21,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:41:21,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973165025] [2022-10-16 01:41:21,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973165025] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 01:41:21,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896898485] [2022-10-16 01:41:21,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 01:41:21,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:41:21,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:41:21,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 01:41:21,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 01:41:21,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 69 check-sat command(s) [2022-10-16 01:41:21,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 01:41:21,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 01:41:21,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 01:41:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 402372 backedges. 214152 proven. 3149 refuted. 0 times theorem prover too weak. 185071 trivial. 0 not checked. [2022-10-16 01:41:22,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 01:41:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 402372 backedges. 214152 proven. 3149 refuted. 0 times theorem prover too weak. 185071 trivial. 0 not checked. [2022-10-16 01:41:22,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896898485] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 01:41:22,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 01:41:22,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2022-10-16 01:41:22,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462678280] [2022-10-16 01:41:22,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 01:41:22,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 01:41:22,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:41:22,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 01:41:22,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-10-16 01:41:22,572 INFO L87 Difference]: Start difference. First operand 1545 states and 1673 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 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) [2022-10-16 01:41:22,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:41:22,770 INFO L93 Difference]: Finished difference Result 13517 states and 14565 transitions. [2022-10-16 01:41:22,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 01:41:22,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 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) Word has length 1541 [2022-10-16 01:41:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:41:22,834 INFO L225 Difference]: With dead ends: 13517 [2022-10-16 01:41:22,835 INFO L226 Difference]: Without dead ends: 13517 [2022-10-16 01:41:22,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3096 GetRequests, 3076 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2022-10-16 01:41:22,836 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 222 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:41:22,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 107 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:41:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13517 states. [2022-10-16 01:41:23,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13517 to 9021. [2022-10-16 01:41:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9021 states, 9019 states have (on average 1.0778356802306241) internal successors, (9721), 9020 states have internal predecessors, (9721), 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) [2022-10-16 01:41:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9021 states to 9021 states and 9721 transitions. [2022-10-16 01:41:23,181 INFO L78 Accepts]: Start accepts. Automaton has 9021 states and 9721 transitions. Word has length 1541 [2022-10-16 01:41:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:41:23,183 INFO L495 AbstractCegarLoop]: Abstraction has 9021 states and 9721 transitions. [2022-10-16 01:41:23,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 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) [2022-10-16 01:41:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 9021 states and 9721 transitions. [2022-10-16 01:41:24,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9018 [2022-10-16 01:41:24,336 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:41:24,339 INFO L195 NwaCegarLoop]: trace histogram [3456, 3456, 576, 576, 576, 96, 96, 96, 16, 16, 16, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 01:41:24,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 01:41:24,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-16 01:41:24,548 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:41:24,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:41:24,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1229783514, now seen corresponding path program 6 times [2022-10-16 01:41:24,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:41:24,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99801148] [2022-10-16 01:41:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:41:24,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:41:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:42:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 14499074 backedges. 3172646 proven. 113309 refuted. 0 times theorem prover too weak. 11213119 trivial. 0 not checked. [2022-10-16 01:42:00,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:42:00,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99801148] [2022-10-16 01:42:00,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99801148] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 01:42:00,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661022961] [2022-10-16 01:42:00,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 01:42:00,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:42:00,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:42:00,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 01:42:00,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 01:42:09,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 755 check-sat command(s) [2022-10-16 01:42:09,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 01:42:09,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 5126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 01:42:09,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 01:42:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 14499074 backedges. 3172656 proven. 113309 refuted. 0 times theorem prover too weak. 11213109 trivial. 0 not checked. [2022-10-16 01:42:11,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 01:42:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14499074 backedges. 3172656 proven. 113309 refuted. 0 times theorem prover too weak. 11213109 trivial. 0 not checked. [2022-10-16 01:42:14,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661022961] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 01:42:14,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 01:42:14,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-10-16 01:42:14,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115613955] [2022-10-16 01:42:14,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 01:42:14,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 01:42:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:42:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 01:42:14,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-16 01:42:14,120 INFO L87 Difference]: Start difference. First operand 9021 states and 9721 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 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) [2022-10-16 01:42:14,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:42:14,253 INFO L93 Difference]: Finished difference Result 26973 states and 29049 transitions. [2022-10-16 01:42:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 01:42:14,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 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) Word has length 9017 [2022-10-16 01:42:14,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:42:14,361 INFO L225 Difference]: With dead ends: 26973 [2022-10-16 01:42:14,361 INFO L226 Difference]: Without dead ends: 26973 [2022-10-16 01:42:14,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18037 GetRequests, 18030 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-16 01:42:14,363 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:42:14,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 104 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:42:14,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26973 states. [2022-10-16 01:42:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26973 to 26973. [2022-10-16 01:42:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26973 states, 26971 states have (on average 1.0770457157687887) internal successors, (29049), 26972 states have internal predecessors, (29049), 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) [2022-10-16 01:42:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26973 states to 26973 states and 29049 transitions. [2022-10-16 01:42:14,868 INFO L78 Accepts]: Start accepts. Automaton has 26973 states and 29049 transitions. Word has length 9017 [2022-10-16 01:42:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:42:14,872 INFO L495 AbstractCegarLoop]: Abstraction has 26973 states and 29049 transitions. [2022-10-16 01:42:14,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 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) [2022-10-16 01:42:14,872 INFO L276 IsEmpty]: Start isEmpty. Operand 26973 states and 29049 transitions. [2022-10-16 01:42:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26970 [2022-10-16 01:42:19,109 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:42:19,119 INFO L195 NwaCegarLoop]: trace histogram [10368, 10368, 1728, 1728, 1728, 288, 288, 288, 48, 48, 48, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 01:42:19,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-16 01:42:19,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:42:19,321 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:42:19,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:42:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2046182950, now seen corresponding path program 7 times [2022-10-16 01:42:19,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:42:19,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307093451] [2022-10-16 01:42:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:42:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:42:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat