/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-cav19/array_tripl_access_init_const.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:18:21,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:18:21,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:18:21,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:18:21,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:18:21,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:18:21,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:18:21,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 23:18:21,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:18:21,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:18:21,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:18:21,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:18:21,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:18:21,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:18:21,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:18:21,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:18:21,538 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:18:21,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:18:21,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:18:21,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:18:21,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:18:21,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:18:21,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:18:21,540 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:18:21,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:18:21,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:18:21,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:18:21,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:18:21,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:18:21,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:18:21,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:18:21,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:18:21,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:18:21,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:18:21,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:18:21,542 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:18:21,542 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:18:21,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:18:21,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:18:21,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:18:21,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:18:21,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:18:21,742 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:18:21,744 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:18:21,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_tripl_access_init_const.c [2022-01-09 23:18:21,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ff55e9f6/261455d963e144d8a303245220d07651/FLAG68b07a903 [2022-01-09 23:18:22,198 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:18:22,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_tripl_access_init_const.c [2022-01-09 23:18:22,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ff55e9f6/261455d963e144d8a303245220d07651/FLAG68b07a903 [2022-01-09 23:18:22,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ff55e9f6/261455d963e144d8a303245220d07651 [2022-01-09 23:18:22,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:18:22,613 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:18:22,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:18:22,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:18:22,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:18:22,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4252b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22, skipping insertion in model container [2022-01-09 23:18:22,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:18:22,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:18:22,758 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_tripl_access_init_const.c[420,433] [2022-01-09 23:18:22,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:18:22,772 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:18:22,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_tripl_access_init_const.c[420,433] [2022-01-09 23:18:22,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:18:22,791 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:18:22,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22 WrapperNode [2022-01-09 23:18:22,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:18:22,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:18:22,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:18:22,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:18:22,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,819 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2022-01-09 23:18:22,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:18:22,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:18:22,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:18:22,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:18:22,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:18:22,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:18:22,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:18:22,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:18:22,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (1/1) ... [2022-01-09 23:18:22,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:18:22,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:18:22,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-09 23:18:22,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-09 23:18:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:18:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:18:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 23:18:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:18:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:18:22,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:18:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:18:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 23:18:22,947 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:18:22,948 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:18:23,037 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:18:23,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:18:23,042 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-09 23:18:23,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:18:23 BoogieIcfgContainer [2022-01-09 23:18:23,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:18:23,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:18:23,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:18:23,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:18:23,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:18:22" (1/3) ... [2022-01-09 23:18:23,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2ad7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:18:23, skipping insertion in model container [2022-01-09 23:18:23,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:18:22" (2/3) ... [2022-01-09 23:18:23,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2ad7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:18:23, skipping insertion in model container [2022-01-09 23:18:23,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:18:23" (3/3) ... [2022-01-09 23:18:23,050 INFO L111 eAbstractionObserver]: Analyzing ICFG array_tripl_access_init_const.c [2022-01-09 23:18:23,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:18:23,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:18:23,106 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:18:23,116 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 23:18:23,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:18:23,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-01-09 23:18:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-09 23:18:23,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:18:23,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:18:23,135 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:18:23,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:18:23,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1807957391, now seen corresponding path program 1 times [2022-01-09 23:18:23,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:18:23,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700449121] [2022-01-09 23:18:23,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:18:23,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:18:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:18:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:23,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:18:23,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700449121] [2022-01-09 23:18:23,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700449121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:18:23,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:18:23,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:18:23,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761909018] [2022-01-09 23:18:23,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:18:23,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:18:23,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:18:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:18:23,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:18:23,373 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-01-09 23:18:23,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:18:23,418 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-01-09 23:18:23,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:18:23,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-01-09 23:18:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:18:23,427 INFO L225 Difference]: With dead ends: 28 [2022-01-09 23:18:23,427 INFO L226 Difference]: Without dead ends: 13 [2022-01-09 23:18:23,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:18:23,434 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:18:23,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:18:23,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-09 23:18:23,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-01-09 23:18:23,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-01-09 23:18:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-01-09 23:18:23,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2022-01-09 23:18:23,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:18:23,468 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-01-09 23:18:23,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-01-09 23:18:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-01-09 23:18:23,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-09 23:18:23,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:18:23,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:18:23,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:18:23,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:18:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:18:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash -369319347, now seen corresponding path program 1 times [2022-01-09 23:18:23,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:18:23,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318088646] [2022-01-09 23:18:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:18:23,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:18:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:18:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:23,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:18:23,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318088646] [2022-01-09 23:18:23,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318088646] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:18:23,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84130163] [2022-01-09 23:18:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:18:23,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:18:23,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:18:23,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:18:23,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 23:18:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:18:23,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 23:18:23,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:18:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:23,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:18:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:23,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84130163] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:18:23,780 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:18:23,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-01-09 23:18:23,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770213862] [2022-01-09 23:18:23,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:18:23,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-09 23:18:23,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:18:23,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-09 23:18:23,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-09 23:18:23,783 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2022-01-09 23:18:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:18:23,824 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-01-09 23:18:23,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-09 23:18:23,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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 9 [2022-01-09 23:18:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:18:23,826 INFO L225 Difference]: With dead ends: 25 [2022-01-09 23:18:23,826 INFO L226 Difference]: Without dead ends: 18 [2022-01-09 23:18:23,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-09 23:18:23,827 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:18:23,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:18:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-09 23:18:23,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-09 23:18:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-01-09 23:18:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-01-09 23:18:23,832 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 9 [2022-01-09 23:18:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:18:23,832 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-01-09 23:18:23,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2022-01-09 23:18:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-01-09 23:18:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-09 23:18:23,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:18:23,833 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:18:23,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 23:18:24,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:18:24,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:18:24,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:18:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1716192135, now seen corresponding path program 2 times [2022-01-09 23:18:24,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:18:24,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012411527] [2022-01-09 23:18:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:18:24,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:18:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:18:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:24,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:18:24,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012411527] [2022-01-09 23:18:24,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012411527] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:18:24,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120712044] [2022-01-09 23:18:24,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:18:24,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:18:24,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:18:24,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:18:24,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 23:18:24,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:18:24,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:18:24,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 23:18:24,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:18:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:24,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:18:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:24,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120712044] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:18:24,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:18:24,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-01-09 23:18:24,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219459380] [2022-01-09 23:18:24,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:18:24,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-09 23:18:24,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:18:24,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-09 23:18:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2022-01-09 23:18:24,450 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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) [2022-01-09 23:18:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:18:24,505 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-01-09 23:18:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 23:18:24,506 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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 15 [2022-01-09 23:18:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:18:24,507 INFO L225 Difference]: With dead ends: 37 [2022-01-09 23:18:24,508 INFO L226 Difference]: Without dead ends: 30 [2022-01-09 23:18:24,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2022-01-09 23:18:24,511 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:18:24,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:18:24,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-09 23:18:24,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-01-09 23:18:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 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) [2022-01-09 23:18:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-01-09 23:18:24,521 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 15 [2022-01-09 23:18:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:18:24,521 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-01-09 23:18:24,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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) [2022-01-09 23:18:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-01-09 23:18:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-09 23:18:24,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:18:24,523 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:18:24,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 23:18:24,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-09 23:18:24,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:18:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:18:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1328180091, now seen corresponding path program 3 times [2022-01-09 23:18:24,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:18:24,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53985945] [2022-01-09 23:18:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:18:24,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:18:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:18:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:24,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:18:24,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53985945] [2022-01-09 23:18:24,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53985945] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:18:24,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818507301] [2022-01-09 23:18:24,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:18:24,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:18:24,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:18:24,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:18:24,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 23:18:25,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-01-09 23:18:25,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:18:25,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-09 23:18:25,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:18:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:25,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:18:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:25,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818507301] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:18:25,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:18:25,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2022-01-09 23:18:25,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939235563] [2022-01-09 23:18:25,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:18:25,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-09 23:18:25,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:18:25,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-09 23:18:25,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2022-01-09 23:18:25,787 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 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) [2022-01-09 23:18:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:18:25,887 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2022-01-09 23:18:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-09 23:18:25,887 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 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 27 [2022-01-09 23:18:25,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:18:25,888 INFO L225 Difference]: With dead ends: 61 [2022-01-09 23:18:25,889 INFO L226 Difference]: Without dead ends: 54 [2022-01-09 23:18:25,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2022-01-09 23:18:25,890 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:18:25,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 30 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:18:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-09 23:18:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-01-09 23:18:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 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) [2022-01-09 23:18:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2022-01-09 23:18:25,898 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 27 [2022-01-09 23:18:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:18:25,898 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2022-01-09 23:18:25,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 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) [2022-01-09 23:18:25,899 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2022-01-09 23:18:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-09 23:18:25,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:18:25,900 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:18:25,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-09 23:18:26,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:18:26,118 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:18:26,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:18:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1458393443, now seen corresponding path program 4 times [2022-01-09 23:18:26,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:18:26,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048313908] [2022-01-09 23:18:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:18:26,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:18:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:18:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:26,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:18:26,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048313908] [2022-01-09 23:18:26,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048313908] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:18:26,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189159928] [2022-01-09 23:18:26,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-09 23:18:26,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:18:26,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:18:26,504 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) [2022-01-09 23:18:26,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 23:18:26,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-09 23:18:26,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:18:26,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-09 23:18:26,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:18:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:27,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:18:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:27,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189159928] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:18:27,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:18:27,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 71 [2022-01-09 23:18:27,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080381001] [2022-01-09 23:18:27,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:18:27,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-09 23:18:27,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:18:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-09 23:18:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2022-01-09 23:18:27,899 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 71 states have internal predecessors, (143), 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) [2022-01-09 23:18:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:18:28,086 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2022-01-09 23:18:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-09 23:18:28,086 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 71 states have internal predecessors, (143), 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 51 [2022-01-09 23:18:28,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:18:28,087 INFO L225 Difference]: With dead ends: 109 [2022-01-09 23:18:28,088 INFO L226 Difference]: Without dead ends: 102 [2022-01-09 23:18:28,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2022-01-09 23:18:28,090 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 69 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:18:28,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 30 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:18:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-01-09 23:18:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-01-09 23:18:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 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) [2022-01-09 23:18:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2022-01-09 23:18:28,100 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 51 [2022-01-09 23:18:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:18:28,101 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2022-01-09 23:18:28,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 71 states have internal predecessors, (143), 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) [2022-01-09 23:18:28,101 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2022-01-09 23:18:28,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-09 23:18:28,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:18:28,103 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:18:28,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-09 23:18:28,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:18:28,323 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:18:28,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:18:28,323 INFO L85 PathProgramCache]: Analyzing trace with hash 546272563, now seen corresponding path program 5 times [2022-01-09 23:18:28,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:18:28,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852062743] [2022-01-09 23:18:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:18:28,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:18:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:18:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:18:29,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:18:29,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852062743] [2022-01-09 23:18:29,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852062743] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:18:29,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957030212] [2022-01-09 23:18:29,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-09 23:18:29,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:18:29,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:18:29,431 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) [2022-01-09 23:18:29,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process