/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-programs/partial_mod_count_limited_base.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:08:51,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:08:51,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:08:51,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:08:51,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:08:51,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:08:51,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:08:51,544 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 23:08:51,569 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:08:51,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:08:51,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:08:51,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:08:51,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:08:51,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:08:51,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:08:51,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:08:51,570 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:08:51,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:08:51,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:08:51,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:08:51,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:08:51,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:08:51,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:08:51,572 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:08:51,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:08:51,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:08:51,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:08:51,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:08:51,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:08:51,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:08:51,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:08:51,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:08:51,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:08:51,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:08:51,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:08:51,573 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:08:51,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:08:51,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:08:51,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:08:51,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:08:51,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:08:51,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:08:51,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:08:51,794 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:08:51,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2022-01-09 23:08:51,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758d4796b/6ee733fa61de404faca9b0e1a1f59a72/FLAG7d9996ac1 [2022-01-09 23:08:52,169 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:08:52,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2022-01-09 23:08:52,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758d4796b/6ee733fa61de404faca9b0e1a1f59a72/FLAG7d9996ac1 [2022-01-09 23:08:52,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758d4796b/6ee733fa61de404faca9b0e1a1f59a72 [2022-01-09 23:08:52,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:08:52,585 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:08:52,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:08:52,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:08:52,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:08:52,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639e621d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52, skipping insertion in model container [2022-01-09 23:08:52,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:08:52,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:08:52,729 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-programs/partial_mod_count_limited_base.c[334,347] [2022-01-09 23:08:52,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:08:52,757 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:08:52,767 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-programs/partial_mod_count_limited_base.c[334,347] [2022-01-09 23:08:52,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:08:52,791 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:08:52,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52 WrapperNode [2022-01-09 23:08:52,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:08:52,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:08:52,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:08:52,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:08:52,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,832 INFO L137 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-01-09 23:08:52,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:08:52,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:08:52,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:08:52,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:08:52,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:08:52,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:08:52,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:08:52,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:08:52,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (1/1) ... [2022-01-09 23:08:52,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:08:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:08:52,875 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 23:08:52,885 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 23:08:52,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:08:52,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:08:52,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 23:08:52,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:08:52,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:08:52,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:08:52,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:08:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 23:08:52,948 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:08:52,949 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:08:53,080 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:08:53,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:08:53,084 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-09 23:08:53,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:08:53 BoogieIcfgContainer [2022-01-09 23:08:53,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:08:53,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:08:53,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:08:53,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:08:53,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:08:52" (1/3) ... [2022-01-09 23:08:53,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a051b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:08:53, skipping insertion in model container [2022-01-09 23:08:53,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:08:52" (2/3) ... [2022-01-09 23:08:53,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a051b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:08:53, skipping insertion in model container [2022-01-09 23:08:53,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:08:53" (3/3) ... [2022-01-09 23:08:53,091 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2022-01-09 23:08:53,094 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:08:53,094 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:08:53,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:08:53,124 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 23:08:53,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:08:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 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) [2022-01-09 23:08:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-09 23:08:53,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:53,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:53,136 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1939796378, now seen corresponding path program 1 times [2022-01-09 23:08:53,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:53,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151448042] [2022-01-09 23:08:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:53,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:53,286 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 23:08:53,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:53,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151448042] [2022-01-09 23:08:53,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151448042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:08:53,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:08:53,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:08:53,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121734955] [2022-01-09 23:08:53,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:08:53,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 23:08:53,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:53,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 23:08:53,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:08:53,320 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-01-09 23:08:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:53,333 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2022-01-09 23:08:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 23:08:53,334 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2022-01-09 23:08:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:53,340 INFO L225 Difference]: With dead ends: 41 [2022-01-09 23:08:53,340 INFO L226 Difference]: Without dead ends: 18 [2022-01-09 23:08:53,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:08:53,345 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:53,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:08:53,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-09 23:08:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-09 23:08:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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 23:08:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-01-09 23:08:53,375 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2022-01-09 23:08:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:53,376 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-01-09 23:08:53,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-01-09 23:08:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-01-09 23:08:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-09 23:08:53,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:53,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:53,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:08:53,377 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:53,381 INFO L85 PathProgramCache]: Analyzing trace with hash -54935082, now seen corresponding path program 1 times [2022-01-09 23:08:53,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:53,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205377362] [2022-01-09 23:08:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:53,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:53,480 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 23:08:53,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:53,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205377362] [2022-01-09 23:08:53,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205377362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:08:53,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:08:53,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:08:53,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979953708] [2022-01-09 23:08:53,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:08:53,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:08:53,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:53,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:08:53,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:08:53,482 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) 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) [2022-01-09 23:08:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:53,529 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2022-01-09 23:08:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:08:53,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 [2022-01-09 23:08:53,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:53,531 INFO L225 Difference]: With dead ends: 45 [2022-01-09 23:08:53,531 INFO L226 Difference]: Without dead ends: 31 [2022-01-09 23:08:53,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:08:53,535 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:53,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:08:53,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-09 23:08:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2022-01-09 23:08:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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 23:08:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-01-09 23:08:53,543 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2022-01-09 23:08:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:53,544 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-01-09 23:08:53,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) 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) [2022-01-09 23:08:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-01-09 23:08:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-09 23:08:53,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:53,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:53,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 23:08:53,546 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:53,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1485448361, now seen corresponding path program 1 times [2022-01-09 23:08:53,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:53,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369218818] [2022-01-09 23:08:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:53,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:08:53,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:53,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369218818] [2022-01-09 23:08:53,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369218818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:08:53,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:08:53,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-09 23:08:53,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404697801] [2022-01-09 23:08:53,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:08:53,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 23:08:53,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 23:08:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:08:53,646 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 23:08:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:53,686 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-01-09 23:08:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 23:08:53,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-01-09 23:08:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:53,687 INFO L225 Difference]: With dead ends: 45 [2022-01-09 23:08:53,687 INFO L226 Difference]: Without dead ends: 31 [2022-01-09 23:08:53,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:08:53,688 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:53,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 45 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:08:53,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-09 23:08:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2022-01-09 23:08:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2022-01-09 23:08:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-01-09 23:08:53,692 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2022-01-09 23:08:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:53,692 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-01-09 23:08:53,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 23:08:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-01-09 23:08:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-09 23:08:53,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:53,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:53,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-09 23:08:53,693 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:53,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:53,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2129460565, now seen corresponding path program 1 times [2022-01-09 23:08:53,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:53,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321598239] [2022-01-09 23:08:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:53,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 23:08:53,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:53,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321598239] [2022-01-09 23:08:53,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321598239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:08:53,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:08:53,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:08:53,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575773866] [2022-01-09 23:08:53,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:08:53,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:08:53,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:08:53,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:08:53,737 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 23:08:53,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:53,752 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-01-09 23:08:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 23:08:53,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-01-09 23:08:53,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:53,753 INFO L225 Difference]: With dead ends: 34 [2022-01-09 23:08:53,753 INFO L226 Difference]: Without dead ends: 32 [2022-01-09 23:08:53,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:08:53,754 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:53,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 45 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:08:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-09 23:08:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-01-09 23:08:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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 23:08:53,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-01-09 23:08:53,758 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2022-01-09 23:08:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:53,758 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-01-09 23:08:53,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 23:08:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-01-09 23:08:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-09 23:08:53,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:53,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:53,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-09 23:08:53,759 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2129520147, now seen corresponding path program 1 times [2022-01-09 23:08:53,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:53,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791456324] [2022-01-09 23:08:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:53,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 23:08:53,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:53,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791456324] [2022-01-09 23:08:53,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791456324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:08:53,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:08:53,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-09 23:08:53,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544293496] [2022-01-09 23:08:53,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:08:53,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 23:08:53,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 23:08:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:08:53,795 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 23:08:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:53,817 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-01-09 23:08:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-09 23:08:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-01-09 23:08:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:53,818 INFO L225 Difference]: With dead ends: 40 [2022-01-09 23:08:53,818 INFO L226 Difference]: Without dead ends: 38 [2022-01-09 23:08:53,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-09 23:08:53,819 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:53,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 52 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:08:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-09 23:08:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2022-01-09 23:08:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 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 23:08:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-01-09 23:08:53,823 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 16 [2022-01-09 23:08:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:53,823 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-01-09 23:08:53,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 23:08:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-01-09 23:08:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-09 23:08:53,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:53,824 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:53,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-09 23:08:53,824 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:53,825 INFO L85 PathProgramCache]: Analyzing trace with hash -593145504, now seen corresponding path program 1 times [2022-01-09 23:08:53,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:53,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306687638] [2022-01-09 23:08:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:53,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:08:53,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:53,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306687638] [2022-01-09 23:08:53,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306687638] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:08:53,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739743134] [2022-01-09 23:08:53,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:53,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:08:53,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:08:53,897 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 23:08:53,900 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 23:08:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:53,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 23:08:53,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:08:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:08:54,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:08:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:08:54,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739743134] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:08:54,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:08:54,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-01-09 23:08:54,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069634396] [2022-01-09 23:08:54,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:08:54,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-09 23:08:54,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:54,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-09 23:08:54,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-01-09 23:08:54,137 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 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 23:08:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:54,199 INFO L93 Difference]: Finished difference Result 123 states and 148 transitions. [2022-01-09 23:08:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-09 23:08:54,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 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 [2022-01-09 23:08:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:54,203 INFO L225 Difference]: With dead ends: 123 [2022-01-09 23:08:54,203 INFO L226 Difference]: Without dead ends: 97 [2022-01-09 23:08:54,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-09 23:08:54,210 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 169 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:54,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 41 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:08:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-09 23:08:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 46. [2022-01-09 23:08:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 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 23:08:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-01-09 23:08:54,220 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 22 [2022-01-09 23:08:54,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:54,220 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-01-09 23:08:54,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 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 23:08:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-01-09 23:08:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-09 23:08:54,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:54,221 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:54,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-09 23:08:54,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-09 23:08:54,436 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:54,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:54,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1836734985, now seen corresponding path program 1 times [2022-01-09 23:08:54,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:54,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70802011] [2022-01-09 23:08:54,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:54,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:54,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:08:54,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545653279] [2022-01-09 23:08:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:54,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:08:54,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:08:54,455 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 23:08:54,475 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 23:08:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:54,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:08:54,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:08:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-09 23:08:54,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:08:54,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:54,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70802011] [2022-01-09 23:08:54,608 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:08:54,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545653279] [2022-01-09 23:08:54,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545653279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:08:54,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:08:54,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:08:54,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684022721] [2022-01-09 23:08:54,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:08:54,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:08:54,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:54,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:08:54,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:08:54,609 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2022-01-09 23:08:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:54,625 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2022-01-09 23:08:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:08:54,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) Word has length 37 [2022-01-09 23:08:54,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:54,626 INFO L225 Difference]: With dead ends: 109 [2022-01-09 23:08:54,626 INFO L226 Difference]: Without dead ends: 79 [2022-01-09 23:08:54,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:08:54,627 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:54,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 41 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:08:54,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-09 23:08:54,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 58. [2022-01-09 23:08:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 57 states have internal predecessors, (70), 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 23:08:54,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2022-01-09 23:08:54,640 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 37 [2022-01-09 23:08:54,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:54,640 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2022-01-09 23:08:54,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2022-01-09 23:08:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2022-01-09 23:08:54,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-09 23:08:54,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:54,642 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:54,659 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 23:08:54,858 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,SelfDestructingSolverStorable6 [2022-01-09 23:08:54,859 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash 467241801, now seen corresponding path program 1 times [2022-01-09 23:08:54,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:54,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461846716] [2022-01-09 23:08:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:54,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-09 23:08:54,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:54,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461846716] [2022-01-09 23:08:54,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461846716] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:08:54,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955730773] [2022-01-09 23:08:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:54,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:08:54,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:08:54,936 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 23:08:54,943 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 23:08:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:54,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 23:08:54,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:08:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:08:55,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:08:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:08:55,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955730773] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:08:55,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:08:55,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-01-09 23:08:55,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950501665] [2022-01-09 23:08:55,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:08:55,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-09 23:08:55,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-09 23:08:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-01-09 23:08:55,216 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 18 states have internal predecessors, (78), 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 23:08:55,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:55,568 INFO L93 Difference]: Finished difference Result 346 states and 426 transitions. [2022-01-09 23:08:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-09 23:08:55,568 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 18 states have internal predecessors, (78), 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 37 [2022-01-09 23:08:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:55,569 INFO L225 Difference]: With dead ends: 346 [2022-01-09 23:08:55,569 INFO L226 Difference]: Without dead ends: 304 [2022-01-09 23:08:55,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=411, Invalid=779, Unknown=0, NotChecked=0, Total=1190 [2022-01-09 23:08:55,571 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 425 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:55,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 141 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:08:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-09 23:08:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 113. [2022-01-09 23:08:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2321428571428572) internal successors, (138), 112 states have internal predecessors, (138), 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 23:08:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 138 transitions. [2022-01-09 23:08:55,591 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 138 transitions. Word has length 37 [2022-01-09 23:08:55,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:55,592 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 138 transitions. [2022-01-09 23:08:55,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 18 states have internal predecessors, (78), 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 23:08:55,592 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 138 transitions. [2022-01-09 23:08:55,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-09 23:08:55,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:55,593 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:55,622 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 23:08:55,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:08:55,809 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:55,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:55,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1314879253, now seen corresponding path program 2 times [2022-01-09 23:08:55,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:55,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681323330] [2022-01-09 23:08:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:55,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-01-09 23:08:55,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:55,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681323330] [2022-01-09 23:08:55,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681323330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:08:55,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:08:55,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-09 23:08:55,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408875849] [2022-01-09 23:08:55,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:08:55,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-09 23:08:55,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-09 23:08:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-09 23:08:55,947 INFO L87 Difference]: Start difference. First operand 113 states and 138 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 23:08:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:56,030 INFO L93 Difference]: Finished difference Result 235 states and 283 transitions. [2022-01-09 23:08:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-09 23:08:56,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 67 [2022-01-09 23:08:56,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:56,031 INFO L225 Difference]: With dead ends: 235 [2022-01-09 23:08:56,031 INFO L226 Difference]: Without dead ends: 182 [2022-01-09 23:08:56,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-09 23:08:56,032 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:56,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 56 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:08:56,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-01-09 23:08:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 155. [2022-01-09 23:08:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.2012987012987013) internal successors, (185), 154 states have internal predecessors, (185), 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 23:08:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2022-01-09 23:08:56,040 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 67 [2022-01-09 23:08:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:56,040 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2022-01-09 23:08:56,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 23:08:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2022-01-09 23:08:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-09 23:08:56,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:56,041 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 6, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:56,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-09 23:08:56,041 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1890253811, now seen corresponding path program 3 times [2022-01-09 23:08:56,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:56,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788941092] [2022-01-09 23:08:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:56,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:08:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-01-09 23:08:56,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:56,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788941092] [2022-01-09 23:08:56,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788941092] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:08:56,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5823817] [2022-01-09 23:08:56,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:08:56,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:08:56,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:08:56,139 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 23:08:56,140 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 23:08:56,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-09 23:08:56,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:08:56,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-09 23:08:56,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:08:56,293 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-09 23:08:56,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2022-01-09 23:08:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-01-09 23:08:56,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:08:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-01-09 23:08:56,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5823817] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:08:56,594 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:08:56,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2022-01-09 23:08:56,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853390122] [2022-01-09 23:08:56,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:08:56,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-09 23:08:56,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:56,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-09 23:08:56,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-01-09 23:08:56,595 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 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 23:08:56,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:56,926 INFO L93 Difference]: Finished difference Result 278 states and 325 transitions. [2022-01-09 23:08:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-09 23:08:56,927 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 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 67 [2022-01-09 23:08:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:56,927 INFO L225 Difference]: With dead ends: 278 [2022-01-09 23:08:56,927 INFO L226 Difference]: Without dead ends: 188 [2022-01-09 23:08:56,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=389, Invalid=943, Unknown=0, NotChecked=0, Total=1332 [2022-01-09 23:08:56,929 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 205 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:56,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 137 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:08:56,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-09 23:08:56,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 108. [2022-01-09 23:08:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.1495327102803738) internal successors, (123), 107 states have internal predecessors, (123), 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 23:08:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2022-01-09 23:08:56,933 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 67 [2022-01-09 23:08:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:56,933 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2022-01-09 23:08:56,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 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 23:08:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2022-01-09 23:08:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-09 23:08:56,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:56,934 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:56,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-09 23:08:57,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:08:57,150 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:57,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:57,150 INFO L85 PathProgramCache]: Analyzing trace with hash -573175961, now seen corresponding path program 2 times [2022-01-09 23:08:57,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:57,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123127711] [2022-01-09 23:08:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:57,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:57,161 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:08:57,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51704075] [2022-01-09 23:08:57,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:08:57,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:08:57,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:08:57,163 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 23:08:57,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-09 23:08:57,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:08:57,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:08:57,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-09 23:08:57,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:08:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:08:57,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:08:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:08:57,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:57,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123127711] [2022-01-09 23:08:57,765 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:08:57,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51704075] [2022-01-09 23:08:57,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51704075] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:08:57,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:08:57,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-01-09 23:08:57,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80874375] [2022-01-09 23:08:57,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:08:57,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-09 23:08:57,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-09 23:08:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2022-01-09 23:08:57,766 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 25 states have internal predecessors, (119), 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 23:08:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:08:58,161 INFO L93 Difference]: Finished difference Result 696 states and 825 transitions. [2022-01-09 23:08:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-09 23:08:58,161 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 25 states have internal predecessors, (119), 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 67 [2022-01-09 23:08:58,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:08:58,163 INFO L225 Difference]: With dead ends: 696 [2022-01-09 23:08:58,163 INFO L226 Difference]: Without dead ends: 621 [2022-01-09 23:08:58,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2022-01-09 23:08:58,164 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 1172 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:08:58,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 195 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-09 23:08:58,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-01-09 23:08:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 210. [2022-01-09 23:08:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.1339712918660287) internal successors, (237), 209 states have internal predecessors, (237), 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 23:08:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 237 transitions. [2022-01-09 23:08:58,172 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 237 transitions. Word has length 67 [2022-01-09 23:08:58,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:08:58,172 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 237 transitions. [2022-01-09 23:08:58,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 25 states have internal predecessors, (119), 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 23:08:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 237 transitions. [2022-01-09 23:08:58,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-09 23:08:58,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:08:58,173 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:08:58,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-09 23:08:58,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-09 23:08:58,391 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:08:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:08:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash -314647257, now seen corresponding path program 3 times [2022-01-09 23:08:58,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:08:58,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140313021] [2022-01-09 23:08:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:08:58,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:08:58,408 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:08:58,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429658495] [2022-01-09 23:08:58,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:08:58,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:08:58,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:08:58,410 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) [2022-01-09 23:08:58,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-09 23:08:58,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-01-09 23:08:58,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:08:58,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-09 23:08:58,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:08:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 613 proven. 319 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-01-09 23:08:59,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:08:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 932 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-01-09 23:08:59,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:08:59,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140313021] [2022-01-09 23:08:59,502 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:08:59,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429658495] [2022-01-09 23:08:59,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429658495] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:08:59,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:08:59,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2022-01-09 23:08:59,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238449603] [2022-01-09 23:08:59,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:08:59,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-09 23:08:59,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:08:59,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-09 23:08:59,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=594, Unknown=0, NotChecked=0, Total=992 [2022-01-09 23:08:59,503 INFO L87 Difference]: Start difference. First operand 210 states and 237 transitions. Second operand has 32 states, 32 states have (on average 4.59375) internal successors, (147), 31 states have internal predecessors, (147), 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 23:09:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:09:01,172 INFO L93 Difference]: Finished difference Result 1882 states and 2267 transitions. [2022-01-09 23:09:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-09 23:09:01,172 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.59375) internal successors, (147), 31 states have internal predecessors, (147), 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 127 [2022-01-09 23:09:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:09:01,178 INFO L225 Difference]: With dead ends: 1882 [2022-01-09 23:09:01,178 INFO L226 Difference]: Without dead ends: 1861 [2022-01-09 23:09:01,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3082, Invalid=5474, Unknown=0, NotChecked=0, Total=8556 [2022-01-09 23:09:01,182 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 1519 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-09 23:09:01,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1519 Valid, 255 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-09 23:09:01,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2022-01-09 23:09:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 432. [2022-01-09 23:09:01,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.1809744779582367) internal successors, (509), 431 states have internal predecessors, (509), 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 23:09:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 509 transitions. [2022-01-09 23:09:01,203 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 509 transitions. Word has length 127 [2022-01-09 23:09:01,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:09:01,204 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 509 transitions. [2022-01-09 23:09:01,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.59375) internal successors, (147), 31 states have internal predecessors, (147), 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 23:09:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 509 transitions. [2022-01-09 23:09:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-09 23:09:01,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:09:01,205 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:09:01,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-09 23:09:01,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:09:01,426 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:09:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:09:01,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1490439733, now seen corresponding path program 2 times [2022-01-09 23:09:01,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:09:01,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048988897] [2022-01-09 23:09:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:09:01,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:09:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:09:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:09:01,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:09:01,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048988897] [2022-01-09 23:09:01,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048988897] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:09:01,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849220676] [2022-01-09 23:09:01,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:09:01,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:09:01,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:09:01,872 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:09:01,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-09 23:09:01,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:09:01,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:09:01,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-09 23:09:01,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:09:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:09:02,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:09:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:09:03,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849220676] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:09:03,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:09:03,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 78 [2022-01-09 23:09:03,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299742583] [2022-01-09 23:09:03,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:09:03,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-09 23:09:03,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:09:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-09 23:09:04,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=3455, Unknown=0, NotChecked=0, Total=6162 [2022-01-09 23:09:04,000 INFO L87 Difference]: Start difference. First operand 432 states and 509 transitions. Second operand has 79 states, 79 states have (on average 4.822784810126582) internal successors, (381), 78 states have internal predecessors, (381), 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 23:09:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:09:06,114 INFO L93 Difference]: Finished difference Result 6229 states and 7420 transitions. [2022-01-09 23:09:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-09 23:09:06,114 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.822784810126582) internal successors, (381), 78 states have internal predecessors, (381), 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 137 [2022-01-09 23:09:06,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:09:06,128 INFO L225 Difference]: With dead ends: 6229 [2022-01-09 23:09:06,128 INFO L226 Difference]: Without dead ends: 5853 [2022-01-09 23:09:06,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3797 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4082, Invalid=6630, Unknown=0, NotChecked=0, Total=10712 [2022-01-09 23:09:06,133 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 2854 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:09:06,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2854 Valid, 560 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:09:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5853 states. [2022-01-09 23:09:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5853 to 587. [2022-01-09 23:09:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 1.18259385665529) internal successors, (693), 586 states have internal predecessors, (693), 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 23:09:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 693 transitions. [2022-01-09 23:09:06,188 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 693 transitions. Word has length 137 [2022-01-09 23:09:06,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:09:06,188 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 693 transitions. [2022-01-09 23:09:06,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.822784810126582) internal successors, (381), 78 states have internal predecessors, (381), 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 23:09:06,189 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 693 transitions. [2022-01-09 23:09:06,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-01-09 23:09:06,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:09:06,191 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:09:06,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-09 23:09:06,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:09:06,407 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:09:06,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:09:06,408 INFO L85 PathProgramCache]: Analyzing trace with hash -214224921, now seen corresponding path program 4 times [2022-01-09 23:09:06,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:09:06,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863580563] [2022-01-09 23:09:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:09:06,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:09:06,446 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:09:06,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896761233] [2022-01-09 23:09:06,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-09 23:09:06,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:09:06,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:09:06,458 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:09:06,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-09 23:09:07,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-09 23:09:07,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:09:07,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-09 23:09:07,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:09:09,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6179 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:09:09,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:09:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6179 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:09:13,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:09:13,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863580563] [2022-01-09 23:09:13,500 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:09:13,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896761233] [2022-01-09 23:09:13,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896761233] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:09:13,501 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:09:13,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105 [2022-01-09 23:09:13,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949173552] [2022-01-09 23:09:13,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:09:13,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-09 23:09:13,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:09:13,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-09 23:09:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5463, Invalid=5667, Unknown=0, NotChecked=0, Total=11130 [2022-01-09 23:09:13,504 INFO L87 Difference]: Start difference. First operand 587 states and 693 transitions. Second operand has 106 states, 106 states have (on average 4.89622641509434) internal successors, (519), 105 states have internal predecessors, (519), 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 23:09:24,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:09:24,339 INFO L93 Difference]: Finished difference Result 16704 states and 20014 transitions. [2022-01-09 23:09:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-09 23:09:24,340 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 4.89622641509434) internal successors, (519), 105 states have internal predecessors, (519), 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 267 [2022-01-09 23:09:24,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:09:24,374 INFO L225 Difference]: With dead ends: 16704 [2022-01-09 23:09:24,374 INFO L226 Difference]: Without dead ends: 16253 [2022-01-09 23:09:24,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5253 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=10869, Invalid=13623, Unknown=0, NotChecked=0, Total=24492 [2022-01-09 23:09:24,381 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6262 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:09:24,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6262 Valid, 882 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-09 23:09:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16253 states. [2022-01-09 23:09:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16253 to 1029. [2022-01-09 23:09:24,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.154669260700389) internal successors, (1187), 1028 states have internal predecessors, (1187), 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 23:09:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1187 transitions. [2022-01-09 23:09:24,703 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1187 transitions. Word has length 267 [2022-01-09 23:09:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:09:24,704 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 1187 transitions. [2022-01-09 23:09:24,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 4.89622641509434) internal successors, (519), 105 states have internal predecessors, (519), 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 23:09:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1187 transitions. [2022-01-09 23:09:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2022-01-09 23:09:24,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:09:24,711 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 102, 101, 101, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:09:24,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-09 23:09:24,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-09 23:09:24,924 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:09:24,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:09:24,924 INFO L85 PathProgramCache]: Analyzing trace with hash 253570599, now seen corresponding path program 5 times [2022-01-09 23:09:24,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:09:24,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366707583] [2022-01-09 23:09:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:09:24,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:09:24,969 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:09:24,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68940413] [2022-01-09 23:09:24,970 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-09 23:09:24,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:09:24,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:09:24,971 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:09:24,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process