/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 19:26:56,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 19:26:56,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 19:26:56,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 19:26:56,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 19:26:56,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 19:26:56,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 19:26:56,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 19:26:56,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 19:26:56,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 19:26:56,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 19:26:56,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 19:26:56,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 19:26:56,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 19:26:56,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 19:26:56,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 19:26:56,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 19:26:56,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 19:26:56,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 19:26:56,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 19:26:56,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-14 19:26:56,863 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 19:26:56,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 19:26:56,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-14 19:26:56,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-14 19:26:56,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-14 19:26:56,864 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-14 19:26:56,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-14 19:26:56,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-14 19:26:56,864 INFO L138 SettingsManager]: * Use SBE=true [2022-02-14 19:26:56,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 19:26:56,864 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 19:26:56,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 19:26:56,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 19:26:56,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 19:26:56,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 19:26:56,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 19:26:56,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-14 19:26:56,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-14 19:26:56,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 19:26:56,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-14 19:26:56,866 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-14 19:26:56,866 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-14 19:26:56,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-14 19:26:56,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 19:26:57,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 19:26:57,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 19:26:57,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 19:26:57,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 19:26:57,074 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 19:26:57,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound20.c [2022-02-14 19:26:57,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f4f2878/cc8c12eaaf7446f2a3b50138d453d5e8/FLAG08524d776 [2022-02-14 19:26:57,454 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 19:26:57,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound20.c [2022-02-14 19:26:57,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f4f2878/cc8c12eaaf7446f2a3b50138d453d5e8/FLAG08524d776 [2022-02-14 19:26:57,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f4f2878/cc8c12eaaf7446f2a3b50138d453d5e8 [2022-02-14 19:26:57,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 19:26:57,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-14 19:26:57,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 19:26:57,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 19:26:57,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 19:26:57,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 07:26:57" (1/1) ... [2022-02-14 19:26:57,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd18b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57, skipping insertion in model container [2022-02-14 19:26:57,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 07:26:57" (1/1) ... [2022-02-14 19:26:57,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 19:26:57,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 19:26:57,591 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound20.c[458,471] [2022-02-14 19:26:57,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 19:26:57,614 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 19:26:57,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound20.c[458,471] [2022-02-14 19:26:57,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 19:26:57,631 INFO L208 MainTranslator]: Completed translation [2022-02-14 19:26:57,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57 WrapperNode [2022-02-14 19:26:57,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 19:26:57,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 19:26:57,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 19:26:57,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 19:26:57,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57" (1/1) ... [2022-02-14 19:26:57,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57" (1/1) ... [2022-02-14 19:26:57,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57" (1/1) ... [2022-02-14 19:26:57,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57" (1/1) ... [2022-02-14 19:26:57,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57" (1/1) ... [2022-02-14 19:26:57,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57" (1/1) ... [2022-02-14 19:26:57,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57" (1/1) ... [2022-02-14 19:26:57,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 19:26:57,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 19:26:57,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 19:26:57,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 19:26:57,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57" (1/1) ... [2022-02-14 19:26:57,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 19:26:57,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:26:57,694 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) [2022-02-14 19:26:57,719 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 [2022-02-14 19:26:57,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 19:26:57,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 19:26:57,754 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 19:26:57,754 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 19:26:57,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 19:26:57,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 19:26:57,756 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 19:26:57,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 19:26:57,756 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 19:26:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 19:26:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-02-14 19:26:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 19:26:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 19:26:57,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 19:26:57,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 19:26:57,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 19:26:57,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 19:26:57,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 19:26:57,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 19:26:57,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 19:26:57,809 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 19:26:57,811 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 19:26:57,942 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 19:26:57,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 19:26:57,959 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 19:26:57,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 07:26:57 BoogieIcfgContainer [2022-02-14 19:26:57,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 19:26:57,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 19:26:57,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 19:26:57,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 19:26:57,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 07:26:57" (1/3) ... [2022-02-14 19:26:57,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278ecc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 07:26:57, skipping insertion in model container [2022-02-14 19:26:57,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:26:57" (2/3) ... [2022-02-14 19:26:57,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278ecc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 07:26:57, skipping insertion in model container [2022-02-14 19:26:57,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 07:26:57" (3/3) ... [2022-02-14 19:26:57,966 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound20.c [2022-02-14 19:26:57,969 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-14 19:26:57,970 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 19:26:58,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 19:26:58,034 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 [2022-02-14 19:26:58,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 19:26:58,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-14 19:26:58,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-14 19:26:58,060 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:26:58,060 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:26:58,061 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:26:58,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:26:58,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1098891495, now seen corresponding path program 1 times [2022-02-14 19:26:58,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:26:58,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575370176] [2022-02-14 19:26:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:26:58,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:26:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:26:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:26:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:26:58,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:26:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:26:58,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-14 19:26:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:26:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 19:26:58,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:26:58,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575370176] [2022-02-14 19:26:58,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575370176] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:26:58,231 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:26:58,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 19:26:58,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608304919] [2022-02-14 19:26:58,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:26:58,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 19:26:58,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:26:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 19:26:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 19:26:58,258 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 19:26:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:26:58,326 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2022-02-14 19:26:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 19:26:58,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-02-14 19:26:58,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:26:58,333 INFO L225 Difference]: With dead ends: 51 [2022-02-14 19:26:58,333 INFO L226 Difference]: Without dead ends: 24 [2022-02-14 19:26:58,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 19:26:58,337 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:26:58,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 19:26:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-14 19:26:58,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-02-14 19:26:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 19:26:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-02-14 19:26:58,364 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-02-14 19:26:58,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:26:58,365 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-02-14 19:26:58,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 19:26:58,365 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-02-14 19:26:58,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-14 19:26:58,366 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:26:58,366 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:26:58,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 19:26:58,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:26:58,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:26:58,367 INFO L85 PathProgramCache]: Analyzing trace with hash 769620075, now seen corresponding path program 1 times [2022-02-14 19:26:58,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:26:58,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611825847] [2022-02-14 19:26:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:26:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:26:58,380 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:26:58,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110368288] [2022-02-14 19:26:58,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:26:58,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:26:58,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:26:58,382 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) [2022-02-14 19:26:58,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 19:26:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:26:58,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-14 19:26:58,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 19:26:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 19:26:58,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 19:26:58,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:26:58,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611825847] [2022-02-14 19:26:58,550 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 19:26:58,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110368288] [2022-02-14 19:26:58,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110368288] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:26:58,550 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:26:58,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 19:26:58,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302818405] [2022-02-14 19:26:58,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:26:58,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 19:26:58,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:26:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 19:26:58,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-14 19:26:58,552 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-14 19:26:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:26:58,578 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-02-14 19:26:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 19:26:58,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-02-14 19:26:58,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:26:58,579 INFO L225 Difference]: With dead ends: 35 [2022-02-14 19:26:58,579 INFO L226 Difference]: Without dead ends: 31 [2022-02-14 19:26:58,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-14 19:26:58,581 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:26:58,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 19:26:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-14 19:26:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-14 19:26:58,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 19:26:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-02-14 19:26:58,592 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2022-02-14 19:26:58,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:26:58,592 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-02-14 19:26:58,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-14 19:26:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-02-14 19:26:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-14 19:26:58,594 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:26:58,594 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:26:58,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-14 19:26:58,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:26:58,800 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:26:58,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:26:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash 645812411, now seen corresponding path program 1 times [2022-02-14 19:26:58,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:26:58,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814592099] [2022-02-14 19:26:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:26:58,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:26:58,810 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:26:58,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431070555] [2022-02-14 19:26:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:26:58,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:26:58,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:26:58,811 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) [2022-02-14 19:26:58,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-14 19:26:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:26:58,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-14 19:26:58,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 19:26:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 19:26:58,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 19:26:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-14 19:26:59,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:26:59,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814592099] [2022-02-14 19:26:59,087 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 19:26:59,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431070555] [2022-02-14 19:26:59,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431070555] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-14 19:26:59,088 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-14 19:26:59,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-02-14 19:26:59,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705381357] [2022-02-14 19:26:59,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:26:59,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 19:26:59,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:26:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 19:26:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-14 19:26:59,089 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-14 19:26:59,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:26:59,129 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-02-14 19:26:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 19:26:59,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-02-14 19:26:59,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:26:59,131 INFO L225 Difference]: With dead ends: 37 [2022-02-14 19:26:59,131 INFO L226 Difference]: Without dead ends: 33 [2022-02-14 19:26:59,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-14 19:26:59,132 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:26:59,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 81 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 19:26:59,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-14 19:26:59,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-14 19:26:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 19:26:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-02-14 19:26:59,137 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2022-02-14 19:26:59,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:26:59,138 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-02-14 19:26:59,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-14 19:26:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-02-14 19:26:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-14 19:26:59,139 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:26:59,139 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:26:59,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-14 19:26:59,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-14 19:26:59,346 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:26:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:26:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash 463554397, now seen corresponding path program 1 times [2022-02-14 19:26:59,347 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:26:59,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937421205] [2022-02-14 19:26:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:26:59,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:26:59,358 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:26:59,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345549808] [2022-02-14 19:26:59,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:26:59,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:26:59,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:26:59,382 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) [2022-02-14 19:26:59,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-14 19:26:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:26:59,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-14 19:26:59,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 19:26:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-14 19:26:59,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 19:27:00,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:27:00,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937421205] [2022-02-14 19:27:00,008 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 19:27:00,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345549808] [2022-02-14 19:27:00,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345549808] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 19:27:00,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-14 19:27:00,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-02-14 19:27:00,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548812710] [2022-02-14 19:27:00,008 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-14 19:27:00,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-14 19:27:00,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:27:00,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-14 19:27:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:27:00,009 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-02-14 19:27:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:27:00,064 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-02-14 19:27:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-14 19:27:00,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2022-02-14 19:27:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:27:00,065 INFO L225 Difference]: With dead ends: 42 [2022-02-14 19:27:00,065 INFO L226 Difference]: Without dead ends: 36 [2022-02-14 19:27:00,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:27:00,066 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:27:00,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 155 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 19:27:00,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-14 19:27:00,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-02-14 19:27:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-14 19:27:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-02-14 19:27:00,072 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 40 [2022-02-14 19:27:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:27:00,073 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-02-14 19:27:00,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-02-14 19:27:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-02-14 19:27:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-14 19:27:00,074 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:27:00,074 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:27:00,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-14 19:27:00,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:00,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:27:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:27:00,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1886956461, now seen corresponding path program 2 times [2022-02-14 19:27:00,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:27:00,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938385087] [2022-02-14 19:27:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:27:00,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:27:00,321 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:27:00,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149578874] [2022-02-14 19:27:00,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 19:27:00,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:27:00,323 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) [2022-02-14 19:27:00,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-14 19:27:00,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 19:27:00,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 19:27:00,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-14 19:27:00,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 19:27:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-14 19:27:00,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 19:27:00,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:27:00,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938385087] [2022-02-14 19:27:00,760 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 19:27:00,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149578874] [2022-02-14 19:27:00,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149578874] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 19:27:00,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-14 19:27:00,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-02-14 19:27:00,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686452296] [2022-02-14 19:27:00,761 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-14 19:27:00,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 19:27:00,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:27:00,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 19:27:00,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:27:00,762 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-14 19:27:00,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:27:00,821 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2022-02-14 19:27:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-14 19:27:00,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2022-02-14 19:27:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:27:00,823 INFO L225 Difference]: With dead ends: 45 [2022-02-14 19:27:00,823 INFO L226 Difference]: Without dead ends: 39 [2022-02-14 19:27:00,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:27:00,824 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:27:00,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 195 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 19:27:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-14 19:27:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-02-14 19:27:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-14 19:27:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-02-14 19:27:00,829 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 47 [2022-02-14 19:27:00,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:27:00,830 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-02-14 19:27:00,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-14 19:27:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-02-14 19:27:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-14 19:27:00,831 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:27:00,831 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:27:00,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-14 19:27:01,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:01,035 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:27:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:27:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1213805219, now seen corresponding path program 3 times [2022-02-14 19:27:01,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:27:01,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859248268] [2022-02-14 19:27:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:27:01,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:27:01,043 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:27:01,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986052124] [2022-02-14 19:27:01,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-14 19:27:01,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:01,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:27:01,045 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) [2022-02-14 19:27:01,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-14 19:27:01,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-14 19:27:01,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 19:27:01,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-14 19:27:01,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 19:27:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-02-14 19:27:01,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 19:27:01,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:27:01,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859248268] [2022-02-14 19:27:01,505 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 19:27:01,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986052124] [2022-02-14 19:27:01,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986052124] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 19:27:01,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-14 19:27:01,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-02-14 19:27:01,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068875769] [2022-02-14 19:27:01,505 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-14 19:27:01,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-14 19:27:01,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:27:01,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-14 19:27:01,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:27:01,506 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-02-14 19:27:01,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:27:01,573 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-02-14 19:27:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 19:27:01,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 54 [2022-02-14 19:27:01,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:27:01,575 INFO L225 Difference]: With dead ends: 48 [2022-02-14 19:27:01,575 INFO L226 Difference]: Without dead ends: 42 [2022-02-14 19:27:01,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:27:01,575 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:27:01,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 239 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 19:27:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-02-14 19:27:01,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-02-14 19:27:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-14 19:27:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-02-14 19:27:01,581 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 54 [2022-02-14 19:27:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:27:01,582 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-02-14 19:27:01,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-02-14 19:27:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-02-14 19:27:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-14 19:27:01,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:27:01,583 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:27:01,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-14 19:27:01,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:01,812 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:27:01,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:27:01,813 INFO L85 PathProgramCache]: Analyzing trace with hash 307258797, now seen corresponding path program 4 times [2022-02-14 19:27:01,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:27:01,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352079166] [2022-02-14 19:27:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:27:01,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:27:01,820 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:27:01,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927825716] [2022-02-14 19:27:01,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-14 19:27:01,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:01,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:27:01,821 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) [2022-02-14 19:27:01,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-14 19:27:01,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-14 19:27:01,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 19:27:01,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-14 19:27:01,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 19:27:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-02-14 19:27:02,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 19:27:02,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:27:02,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352079166] [2022-02-14 19:27:02,148 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 19:27:02,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927825716] [2022-02-14 19:27:02,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927825716] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 19:27:02,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-14 19:27:02,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-02-14 19:27:02,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914550442] [2022-02-14 19:27:02,149 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-14 19:27:02,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 19:27:02,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:27:02,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 19:27:02,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-14 19:27:02,150 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-02-14 19:27:02,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:27:02,230 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-02-14 19:27:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-14 19:27:02,230 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2022-02-14 19:27:02,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:27:02,231 INFO L225 Difference]: With dead ends: 51 [2022-02-14 19:27:02,231 INFO L226 Difference]: Without dead ends: 45 [2022-02-14 19:27:02,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-14 19:27:02,232 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 19:27:02,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 287 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 19:27:02,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-14 19:27:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-02-14 19:27:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 12 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-14 19:27:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-02-14 19:27:02,259 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 61 [2022-02-14 19:27:02,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:27:02,259 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-02-14 19:27:02,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-02-14 19:27:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-02-14 19:27:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-14 19:27:02,260 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:27:02,260 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:27:02,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-14 19:27:02,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:02,474 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:27:02,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:27:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1082774365, now seen corresponding path program 5 times [2022-02-14 19:27:02,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:27:02,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801592987] [2022-02-14 19:27:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:27:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:27:02,481 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:27:02,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639566328] [2022-02-14 19:27:02,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-14 19:27:02,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:02,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:27:02,483 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) [2022-02-14 19:27:02,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-14 19:27:17,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-14 19:27:17,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 19:27:17,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-14 19:27:17,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 19:27:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-02-14 19:27:17,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 19:27:17,711 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:27:17,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801592987] [2022-02-14 19:27:17,711 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 19:27:17,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639566328] [2022-02-14 19:27:17,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639566328] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 19:27:17,711 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-14 19:27:17,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-02-14 19:27:17,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262959368] [2022-02-14 19:27:17,711 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-14 19:27:17,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-14 19:27:17,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:27:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-14 19:27:17,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:27:17,712 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-02-14 19:27:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:27:17,810 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2022-02-14 19:27:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 19:27:17,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 68 [2022-02-14 19:27:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:27:17,811 INFO L225 Difference]: With dead ends: 54 [2022-02-14 19:27:17,811 INFO L226 Difference]: Without dead ends: 48 [2022-02-14 19:27:17,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-02-14 19:27:17,811 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 19:27:17,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 339 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 19:27:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-02-14 19:27:17,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-02-14 19:27:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 13 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-02-14 19:27:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-02-14 19:27:17,817 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 68 [2022-02-14 19:27:17,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:27:17,818 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-02-14 19:27:17,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-02-14 19:27:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-02-14 19:27:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-14 19:27:17,818 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:27:17,819 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:27:17,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-14 19:27:18,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:18,029 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:27:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:27:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1692754003, now seen corresponding path program 6 times [2022-02-14 19:27:18,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:27:18,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602379790] [2022-02-14 19:27:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:27:18,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:27:18,036 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:27:18,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692691182] [2022-02-14 19:27:18,037 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-14 19:27:18,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:18,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:27:18,038 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) [2022-02-14 19:27:18,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-14 19:27:30,030 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-14 19:27:30,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 19:27:30,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-14 19:27:30,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 19:27:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-02-14 19:27:30,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 19:27:30,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:27:30,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602379790] [2022-02-14 19:27:30,371 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 19:27:30,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692691182] [2022-02-14 19:27:30,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692691182] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 19:27:30,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-14 19:27:30,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-02-14 19:27:30,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659324578] [2022-02-14 19:27:30,372 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-14 19:27:30,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 19:27:30,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:27:30,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 19:27:30,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-02-14 19:27:30,373 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 9 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-02-14 19:27:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:27:30,493 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-02-14 19:27:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:27:30,493 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 9 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 75 [2022-02-14 19:27:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:27:30,494 INFO L225 Difference]: With dead ends: 57 [2022-02-14 19:27:30,494 INFO L226 Difference]: Without dead ends: 51 [2022-02-14 19:27:30,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-02-14 19:27:30,495 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 2 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 19:27:30,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 395 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 19:27:30,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-14 19:27:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-02-14 19:27:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 14 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-14 19:27:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-02-14 19:27:30,500 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 75 [2022-02-14 19:27:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:27:30,501 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-02-14 19:27:30,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 9 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-02-14 19:27:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-02-14 19:27:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-14 19:27:30,502 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:27:30,502 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:27:30,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-14 19:27:30,710 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,SelfDestructingSolverStorable8 [2022-02-14 19:27:30,710 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:27:30,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:27:30,710 INFO L85 PathProgramCache]: Analyzing trace with hash 615143773, now seen corresponding path program 7 times [2022-02-14 19:27:30,711 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:27:30,711 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034373813] [2022-02-14 19:27:30,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:27:30,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:27:30,729 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:27:30,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988161975] [2022-02-14 19:27:30,729 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-14 19:27:30,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:30,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:27:30,733 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) [2022-02-14 19:27:30,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-14 19:27:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:27:31,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-14 19:27:31,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 19:27:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 18 proven. 84 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-02-14 19:27:32,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 19:27:32,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:27:32,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034373813] [2022-02-14 19:27:32,158 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 19:27:32,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988161975] [2022-02-14 19:27:32,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988161975] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 19:27:32,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-14 19:27:32,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-02-14 19:27:32,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533384056] [2022-02-14 19:27:32,158 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-14 19:27:32,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-14 19:27:32,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:27:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-14 19:27:32,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-02-14 19:27:32,160 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 10 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-02-14 19:27:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:27:32,309 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2022-02-14 19:27:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:27:32,310 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 10 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 82 [2022-02-14 19:27:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:27:32,310 INFO L225 Difference]: With dead ends: 60 [2022-02-14 19:27:32,310 INFO L226 Difference]: Without dead ends: 54 [2022-02-14 19:27:32,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-02-14 19:27:32,311 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 2 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 19:27:32,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 455 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 19:27:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-14 19:27:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-02-14 19:27:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 15 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-02-14 19:27:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-02-14 19:27:32,317 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 82 [2022-02-14 19:27:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:27:32,317 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-02-14 19:27:32,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 10 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-02-14 19:27:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-02-14 19:27:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-14 19:27:32,318 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:27:32,318 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:27:32,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-02-14 19:27:32,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-14 19:27:32,524 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:27:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:27:32,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1334355539, now seen corresponding path program 8 times [2022-02-14 19:27:32,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:27:32,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056714787] [2022-02-14 19:27:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:27:32,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:27:32,531 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:27:32,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804112183] [2022-02-14 19:27:32,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 19:27:32,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:32,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:27:32,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 19:27:32,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-14 19:27:40,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 19:27:40,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 19:27:40,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 40 conjunts are in the unsatisfiable core [2022-02-14 19:27:40,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 19:27:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-02-14 19:27:40,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 19:27:41,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:27:41,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056714787] [2022-02-14 19:27:41,055 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 19:27:41,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804112183] [2022-02-14 19:27:41,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804112183] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 19:27:41,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-14 19:27:41,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-02-14 19:27:41,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496399608] [2022-02-14 19:27:41,056 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-14 19:27:41,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 19:27:41,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:27:41,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 19:27:41,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-02-14 19:27:41,057 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 11 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-02-14 19:27:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:27:41,209 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2022-02-14 19:27:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-14 19:27:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 11 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) Word has length 89 [2022-02-14 19:27:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:27:41,210 INFO L225 Difference]: With dead ends: 63 [2022-02-14 19:27:41,210 INFO L226 Difference]: Without dead ends: 57 [2022-02-14 19:27:41,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-02-14 19:27:41,211 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 2 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 19:27:41,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 519 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 19:27:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-14 19:27:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-02-14 19:27:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 16 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-14 19:27:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2022-02-14 19:27:41,217 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 89 [2022-02-14 19:27:41,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:27:41,217 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2022-02-14 19:27:41,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 11 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-02-14 19:27:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2022-02-14 19:27:41,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-02-14 19:27:41,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:27:41,218 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:27:41,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-02-14 19:27:41,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-14 19:27:41,419 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:27:41,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:27:41,419 INFO L85 PathProgramCache]: Analyzing trace with hash 711483229, now seen corresponding path program 9 times [2022-02-14 19:27:41,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:27:41,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141148929] [2022-02-14 19:27:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:27:41,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:27:41,426 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 19:27:41,426 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962171692] [2022-02-14 19:27:41,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-14 19:27:41,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 19:27:41,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:27:41,436 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 19:27:41,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process