/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 00:28:55,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 00:28:55,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 00:28:55,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 00:28:55,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 00:28:55,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 00:28:55,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 00:28:55,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 00:28:55,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 00:28:55,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 00:28:55,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 00:28:55,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 00:28:55,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 00:28:55,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 00:28:55,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 00:28:55,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 00:28:55,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 00:28:55,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 00:28:55,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 00:28:55,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 00:28:55,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-15 00:28:55,434 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 00:28:55,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 00:28:55,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 00:28:55,436 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 00:28:55,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 00:28:55,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 00:28:55,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 00:28:55,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 00:28:55,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 00:28:55,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 00:28:55,437 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 00:28:55,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 00:28:55,437 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 00:28:55,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 00:28:55,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 00:28:55,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 00:28:55,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 00:28:55,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 00:28:55,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:28:55,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 00:28:55,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 00:28:55,438 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-15 00:28:55,438 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 00:28:55,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 00:28:55,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 00:28:55,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 00:28:55,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 00:28:55,659 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 00:28:55,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound100.c [2022-02-15 00:28:55,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9873bb8c/9c8e95023cdc4bb88d6dbed432f50f46/FLAG209986d03 [2022-02-15 00:28:56,065 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 00:28:56,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound100.c [2022-02-15 00:28:56,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9873bb8c/9c8e95023cdc4bb88d6dbed432f50f46/FLAG209986d03 [2022-02-15 00:28:56,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9873bb8c/9c8e95023cdc4bb88d6dbed432f50f46 [2022-02-15 00:28:56,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 00:28:56,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 00:28:56,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 00:28:56,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 00:28:56,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 00:28:56,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:56,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61160d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56, skipping insertion in model container [2022-02-15 00:28:56,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:56,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 00:28:56,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 00:28:56,639 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/ps6-ll_valuebound100.c[458,471] [2022-02-15 00:28:56,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:28:56,675 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 00:28:56,683 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/ps6-ll_valuebound100.c[458,471] [2022-02-15 00:28:56,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:28:56,695 INFO L208 MainTranslator]: Completed translation [2022-02-15 00:28:56,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56 WrapperNode [2022-02-15 00:28:56,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 00:28:56,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 00:28:56,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 00:28:56,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 00:28:56,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:56,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:56,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:56,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:56,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:56,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:56,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:56,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 00:28:56,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 00:28:56,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 00:28:56,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 00:28:56,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:56,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:28:56,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:28:56,751 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) [2022-02-15 00:28:56,771 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 [2022-02-15 00:28:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 00:28:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 00:28:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 00:28:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-15 00:28:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 00:28:56,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 00:28:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 00:28:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 00:28:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 00:28:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 00:28:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-02-15 00:28:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-15 00:28:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 00:28:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 00:28:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 00:28:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 00:28:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 00:28:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 00:28:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 00:28:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 00:28:56,839 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 00:28:56,840 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 00:28:56,977 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 00:28:56,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 00:28:56,981 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 00:28:56,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:28:56 BoogieIcfgContainer [2022-02-15 00:28:56,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 00:28:56,999 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-15 00:28:56,999 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-15 00:28:57,000 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-15 00:28:57,003 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:28:56" (1/1) ... [2022-02-15 00:28:57,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:28:57 BasicIcfg [2022-02-15 00:28:57,016 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-15 00:28:57,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 00:28:57,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 00:28:57,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 00:28:57,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:28:56" (1/4) ... [2022-02-15 00:28:57,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341ae39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:28:57, skipping insertion in model container [2022-02-15 00:28:57,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:28:56" (2/4) ... [2022-02-15 00:28:57,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341ae39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:28:57, skipping insertion in model container [2022-02-15 00:28:57,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:28:56" (3/4) ... [2022-02-15 00:28:57,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341ae39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:28:57, skipping insertion in model container [2022-02-15 00:28:57,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:28:57" (4/4) ... [2022-02-15 00:28:57,035 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound100.cJordan [2022-02-15 00:28:57,039 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-15 00:28:57,039 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 00:28:57,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 00:28:57,102 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-15 00:28:57,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 00:28:57,115 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) [2022-02-15 00:28:57,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 00:28:57,128 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:28:57,129 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:28:57,129 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:28:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:28:57,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1187991702, now seen corresponding path program 1 times [2022-02-15 00:28:57,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:28:57,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040996725] [2022-02-15 00:28:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:28:57,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:28:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:28:57,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:28:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:28:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 00:28:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:28:57,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 00:28:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:28:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 00:28:57,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:28:57,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040996725] [2022-02-15 00:28:57,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040996725] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:28:57,331 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:28:57,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 00:28:57,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058513981] [2022-02-15 00:28:57,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:28:57,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 00:28:57,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:28:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 00:28:57,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 00:28:57,362 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) [2022-02-15 00:28:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:28:57,425 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-02-15 00:28:57,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 00:28:57,427 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 [2022-02-15 00:28:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:28:57,435 INFO L225 Difference]: With dead ends: 29 [2022-02-15 00:28:57,435 INFO L226 Difference]: Without dead ends: 24 [2022-02-15 00:28:57,437 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 [2022-02-15 00:28:57,440 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 [2022-02-15 00:28:57,442 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] [2022-02-15 00:28:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-15 00:28:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-02-15 00:28:57,469 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) [2022-02-15 00:28:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-02-15 00:28:57,473 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-02-15 00:28:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:28:57,474 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-02-15 00:28:57,474 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) [2022-02-15 00:28:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-02-15 00:28:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 00:28:57,476 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:28:57,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:28:57,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 00:28:57,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:28:57,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:28:57,477 INFO L85 PathProgramCache]: Analyzing trace with hash 793962506, now seen corresponding path program 1 times [2022-02-15 00:28:57,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:28:57,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996538971] [2022-02-15 00:28:57,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:28:57,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:28:57,502 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:28:57,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873098325] [2022-02-15 00:28:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:28:57,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:28:57,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:28:57,506 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) [2022-02-15 00:28:57,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 00:28:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:28:57,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-15 00:28:57,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:28:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 00:28:57,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 00:28:57,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:28:57,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996538971] [2022-02-15 00:28:57,708 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:28:57,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873098325] [2022-02-15 00:28:57,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873098325] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:28:57,708 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:28:57,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 00:28:57,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066996444] [2022-02-15 00:28:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:28:57,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 00:28:57,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:28:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 00:28:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:28:57,722 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) [2022-02-15 00:28:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:28:57,783 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-02-15 00:28:57,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 00:28:57,784 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 [2022-02-15 00:28:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:28:57,785 INFO L225 Difference]: With dead ends: 33 [2022-02-15 00:28:57,785 INFO L226 Difference]: Without dead ends: 31 [2022-02-15 00:28:57,785 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 [2022-02-15 00:28:57,786 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 [2022-02-15 00:28:57,786 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] [2022-02-15 00:28:57,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-15 00:28:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-15 00:28:57,791 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) [2022-02-15 00:28:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-02-15 00:28:57,792 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2022-02-15 00:28:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:28:57,792 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-02-15 00:28:57,792 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) [2022-02-15 00:28:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-02-15 00:28:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 00:28:57,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:28:57,793 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] [2022-02-15 00:28:57,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-15 00:28:58,009 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 [2022-02-15 00:28:58,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:28:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:28:58,010 INFO L85 PathProgramCache]: Analyzing trace with hash -503871754, now seen corresponding path program 1 times [2022-02-15 00:28:58,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:28:58,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371239022] [2022-02-15 00:28:58,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:28:58,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:28:58,025 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:28:58,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073840226] [2022-02-15 00:28:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:28:58,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:28:58,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:28:58,028 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) [2022-02-15 00:28:58,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-15 00:28:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:28:58,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 00:28:58,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:28:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 00:28:58,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:28:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-15 00:28:58,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:28:58,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371239022] [2022-02-15 00:28:58,926 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:28:58,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073840226] [2022-02-15 00:28:58,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073840226] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 00:28:58,927 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:28:58,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-02-15 00:28:58,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967650240] [2022-02-15 00:28:58,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:28:58,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 00:28:58,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:28:58,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 00:28:58,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-15 00:28:58,928 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) [2022-02-15 00:28:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:28:58,952 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-02-15 00:28:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 00:28:58,953 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 [2022-02-15 00:28:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:28:58,953 INFO L225 Difference]: With dead ends: 35 [2022-02-15 00:28:58,953 INFO L226 Difference]: Without dead ends: 33 [2022-02-15 00:28:58,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 00:28:58,955 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 [2022-02-15 00:28:58,955 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] [2022-02-15 00:28:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-15 00:28:58,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-15 00:28:58,958 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) [2022-02-15 00:28:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-02-15 00:28:58,959 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2022-02-15 00:28:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:28:58,959 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-02-15 00:28:58,959 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) [2022-02-15 00:28:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-02-15 00:28:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 00:28:58,960 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:28:58,960 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] [2022-02-15 00:28:58,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-15 00:28:59,164 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 [2022-02-15 00:28:59,166 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:28:59,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:28:59,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1285656823, now seen corresponding path program 1 times [2022-02-15 00:28:59,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:28:59,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79892696] [2022-02-15 00:28:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:28:59,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:28:59,176 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:28:59,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721457793] [2022-02-15 00:28:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:28:59,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:28:59,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:28:59,178 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) [2022-02-15 00:28:59,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-15 00:28:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:28:59,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 00:28:59,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:28:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-15 00:28:59,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:28:59,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:28:59,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79892696] [2022-02-15 00:28:59,584 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:28:59,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721457793] [2022-02-15 00:28:59,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721457793] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:28:59,584 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:28:59,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-02-15 00:28:59,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507572990] [2022-02-15 00:28:59,584 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-15 00:28:59,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 00:28:59,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:28:59,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 00:28:59,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-15 00:28:59,586 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) [2022-02-15 00:28:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:28:59,650 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-02-15 00:28:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 00:28:59,651 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 [2022-02-15 00:28:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:28:59,651 INFO L225 Difference]: With dead ends: 40 [2022-02-15 00:28:59,652 INFO L226 Difference]: Without dead ends: 36 [2022-02-15 00:28:59,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:28:59,653 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 [2022-02-15 00:28:59,653 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] [2022-02-15 00:28:59,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-15 00:28:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-02-15 00:28:59,656 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) [2022-02-15 00:28:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-02-15 00:28:59,657 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 40 [2022-02-15 00:28:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:28:59,657 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-02-15 00:28:59,657 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) [2022-02-15 00:28:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-02-15 00:28:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 00:28:59,658 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:28:59,658 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] [2022-02-15 00:28:59,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-15 00:28:59,871 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 [2022-02-15 00:28:59,872 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:28:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:28:59,872 INFO L85 PathProgramCache]: Analyzing trace with hash -542323485, now seen corresponding path program 2 times [2022-02-15 00:28:59,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:28:59,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019181231] [2022-02-15 00:28:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:28:59,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:28:59,881 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:28:59,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113287914] [2022-02-15 00:28:59,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 00:28:59,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:28:59,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:28:59,883 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) [2022-02-15 00:28:59,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-15 00:28:59,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 00:28:59,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 00:28:59,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-15 00:28:59,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:29:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-15 00:29:00,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:29:00,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:29:00,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019181231] [2022-02-15 00:29:00,278 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:29:00,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113287914] [2022-02-15 00:29:00,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113287914] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:29:00,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:29:00,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-02-15 00:29:00,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784272513] [2022-02-15 00:29:00,279 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-15 00:29:00,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 00:29:00,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:29:00,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 00:29:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-15 00:29:00,280 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) [2022-02-15 00:29:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:29:00,342 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-02-15 00:29:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 00:29:00,348 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 [2022-02-15 00:29:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:29:00,350 INFO L225 Difference]: With dead ends: 43 [2022-02-15 00:29:00,350 INFO L226 Difference]: Without dead ends: 39 [2022-02-15 00:29:00,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:29:00,351 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 [2022-02-15 00:29:00,352 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] [2022-02-15 00:29:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-15 00:29:00,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-02-15 00:29:00,360 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) [2022-02-15 00:29:00,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-02-15 00:29:00,361 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 47 [2022-02-15 00:29:00,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:29:00,361 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-02-15 00:29:00,361 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) [2022-02-15 00:29:00,361 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-02-15 00:29:00,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 00:29:00,363 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:29:00,363 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] [2022-02-15 00:29:00,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-15 00:29:00,568 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 [2022-02-15 00:29:00,569 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:29:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:29:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2094100617, now seen corresponding path program 3 times [2022-02-15 00:29:00,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:29:00,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251088889] [2022-02-15 00:29:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:29:00,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:29:00,580 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:29:00,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419637794] [2022-02-15 00:29:00,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 00:29:00,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:29:00,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:29:00,582 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) [2022-02-15 00:29:00,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-15 00:29:00,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 00:29:00,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 00:29:00,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 00:29:00,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:29:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-02-15 00:29:00,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:29:00,967 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:29:00,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251088889] [2022-02-15 00:29:00,967 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:29:00,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419637794] [2022-02-15 00:29:00,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419637794] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:29:00,967 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:29:00,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-02-15 00:29:00,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546687300] [2022-02-15 00:29:00,968 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-15 00:29:00,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 00:29:00,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:29:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 00:29:00,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-15 00:29:00,969 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) [2022-02-15 00:29:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:29:01,045 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-02-15 00:29:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 00:29:01,045 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 [2022-02-15 00:29:01,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:29:01,046 INFO L225 Difference]: With dead ends: 46 [2022-02-15 00:29:01,046 INFO L226 Difference]: Without dead ends: 42 [2022-02-15 00:29:01,046 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 [2022-02-15 00:29:01,047 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:29:01,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 239 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:29:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-02-15 00:29:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-02-15 00:29:01,051 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) [2022-02-15 00:29:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-02-15 00:29:01,052 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 54 [2022-02-15 00:29:01,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:29:01,052 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-02-15 00:29:01,052 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) [2022-02-15 00:29:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-02-15 00:29:01,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 00:29:01,053 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:29:01,053 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] [2022-02-15 00:29:01,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-15 00:29:01,259 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 [2022-02-15 00:29:01,259 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:29:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:29:01,260 INFO L85 PathProgramCache]: Analyzing trace with hash -826507677, now seen corresponding path program 4 times [2022-02-15 00:29:01,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:29:01,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417605372] [2022-02-15 00:29:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:29:01,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:29:01,269 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:29:01,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599470954] [2022-02-15 00:29:01,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 00:29:01,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:29:01,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:29:01,272 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) [2022-02-15 00:29:01,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-15 00:29:01,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 00:29:01,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 00:29:01,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 00:29:01,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:29:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-02-15 00:29:01,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:29:01,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:29:01,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417605372] [2022-02-15 00:29:01,587 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:29:01,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599470954] [2022-02-15 00:29:01,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599470954] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:29:01,588 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:29:01,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-02-15 00:29:01,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312876030] [2022-02-15 00:29:01,588 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-15 00:29:01,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 00:29:01,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:29:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 00:29:01,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 00:29:01,593 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) [2022-02-15 00:29:01,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:29:01,693 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-02-15 00:29:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 00:29:01,693 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 [2022-02-15 00:29:01,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:29:01,696 INFO L225 Difference]: With dead ends: 49 [2022-02-15 00:29:01,696 INFO L226 Difference]: Without dead ends: 45 [2022-02-15 00:29:01,697 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 [2022-02-15 00:29:01,698 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-02-15 00:29:01,698 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] [2022-02-15 00:29:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-15 00:29:01,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-02-15 00:29:01,708 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) [2022-02-15 00:29:01,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-02-15 00:29:01,710 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 61 [2022-02-15 00:29:01,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:29:01,710 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-02-15 00:29:01,711 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) [2022-02-15 00:29:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-02-15 00:29:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-15 00:29:01,712 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:29:01,712 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] [2022-02-15 00:29:01,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-15 00:29:01,915 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 [2022-02-15 00:29:01,916 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:29:01,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:29:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash -170119689, now seen corresponding path program 5 times [2022-02-15 00:29:01,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:29:01,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368540898] [2022-02-15 00:29:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:29:01,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:29:01,924 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:29:01,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797875976] [2022-02-15 00:29:01,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 00:29:01,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:29:01,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:29:01,925 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) [2022-02-15 00:29:01,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-15 00:29:02,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-15 00:29:02,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 00:29:02,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-15 00:29:02,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:29:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-02-15 00:29:02,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:29:02,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:29:02,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368540898] [2022-02-15 00:29:02,844 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:29:02,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797875976] [2022-02-15 00:29:02,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797875976] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:29:02,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:29:02,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-02-15 00:29:02,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227346162] [2022-02-15 00:29:02,845 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-15 00:29:02,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 00:29:02,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:29:02,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 00:29:02,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-15 00:29:02,846 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) [2022-02-15 00:29:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:29:02,954 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2022-02-15 00:29:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 00:29:02,956 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 [2022-02-15 00:29:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:29:02,957 INFO L225 Difference]: With dead ends: 52 [2022-02-15 00:29:02,957 INFO L226 Difference]: Without dead ends: 48 [2022-02-15 00:29:02,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-02-15 00:29:02,957 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 [2022-02-15 00:29:02,958 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] [2022-02-15 00:29:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-02-15 00:29:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-02-15 00:29:02,960 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) [2022-02-15 00:29:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-02-15 00:29:02,961 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 68 [2022-02-15 00:29:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:29:02,961 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-02-15 00:29:02,961 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) [2022-02-15 00:29:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-02-15 00:29:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 00:29:02,962 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:29:02,962 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] [2022-02-15 00:29:02,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-15 00:29:03,170 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 [2022-02-15 00:29:03,170 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:29:03,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:29:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1505202147, now seen corresponding path program 6 times [2022-02-15 00:29:03,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:29:03,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718980274] [2022-02-15 00:29:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:29:03,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:29:03,178 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:29:03,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239320539] [2022-02-15 00:29:03,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 00:29:03,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:29:03,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:29:03,181 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) [2022-02-15 00:29:03,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-15 00:29:03,574 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-15 00:29:03,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 00:29:03,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-15 00:29:03,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:29:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-02-15 00:29:03,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:29:04,289 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:29:04,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718980274] [2022-02-15 00:29:04,290 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:29:04,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239320539] [2022-02-15 00:29:04,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239320539] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:29:04,290 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:29:04,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-02-15 00:29:04,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704557168] [2022-02-15 00:29:04,290 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-15 00:29:04,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 00:29:04,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:29:04,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 00:29:04,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-02-15 00:29:04,291 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) [2022-02-15 00:29:04,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:29:04,420 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-02-15 00:29:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 00:29:04,421 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 [2022-02-15 00:29:04,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:29:04,421 INFO L225 Difference]: With dead ends: 55 [2022-02-15 00:29:04,422 INFO L226 Difference]: Without dead ends: 51 [2022-02-15 00:29:04,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-02-15 00:29:04,422 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 [2022-02-15 00:29:04,423 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] [2022-02-15 00:29:04,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-15 00:29:04,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-02-15 00:29:04,425 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) [2022-02-15 00:29:04,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-02-15 00:29:04,426 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 75 [2022-02-15 00:29:04,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:29:04,426 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-02-15 00:29:04,426 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) [2022-02-15 00:29:04,426 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-02-15 00:29:04,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-15 00:29:04,427 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:29:04,427 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] [2022-02-15 00:29:04,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-15 00:29:04,627 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 [2022-02-15 00:29:04,628 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:29:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:29:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash 252865655, now seen corresponding path program 7 times [2022-02-15 00:29:04,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:29:04,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534362465] [2022-02-15 00:29:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:29:04,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:29:04,636 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:29:04,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023810982] [2022-02-15 00:29:04,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 00:29:04,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:29:04,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:29:04,641 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) [2022-02-15 00:29:04,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-15 00:30:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:30:17,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-15 00:30:17,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:30:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 18 proven. 84 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-02-15 00:30:18,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:30:18,183 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:30:18,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534362465] [2022-02-15 00:30:18,184 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:30:18,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023810982] [2022-02-15 00:30:18,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023810982] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:30:18,184 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:30:18,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-02-15 00:30:18,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330517482] [2022-02-15 00:30:18,184 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-15 00:30:18,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 00:30:18,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:30:18,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 00:30:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-02-15 00:30:18,186 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) [2022-02-15 00:30:18,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:30:18,323 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-02-15 00:30:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 00:30:18,324 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 [2022-02-15 00:30:18,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:30:18,324 INFO L225 Difference]: With dead ends: 58 [2022-02-15 00:30:18,324 INFO L226 Difference]: Without dead ends: 54 [2022-02-15 00:30:18,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-02-15 00:30:18,325 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 [2022-02-15 00:30:18,325 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] [2022-02-15 00:30:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-15 00:30:18,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-02-15 00:30:18,328 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) [2022-02-15 00:30:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-02-15 00:30:18,328 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 82 [2022-02-15 00:30:18,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:30:18,328 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-02-15 00:30:18,329 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) [2022-02-15 00:30:18,329 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-02-15 00:30:18,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 00:30:18,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:30:18,329 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] [2022-02-15 00:30:18,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-15 00:30:18,547 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 [2022-02-15 00:30:18,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:30:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:30:18,548 INFO L85 PathProgramCache]: Analyzing trace with hash 288751971, now seen corresponding path program 8 times [2022-02-15 00:30:18,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:30:18,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309646605] [2022-02-15 00:30:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:30:18,555 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:30:18,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899683628] [2022-02-15 00:30:18,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 00:30:18,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:30:18,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:30:18,562 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) [2022-02-15 00:30:18,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-15 00:30:19,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 00:30:19,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 00:30:19,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 40 conjunts are in the unsatisfiable core [2022-02-15 00:30:19,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 00:30:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-02-15 00:30:19,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 00:30:19,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:30:19,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309646605] [2022-02-15 00:30:19,628 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-15 00:30:19,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899683628] [2022-02-15 00:30:19,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899683628] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 00:30:19,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-15 00:30:19,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-02-15 00:30:19,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67979820] [2022-02-15 00:30:19,628 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-15 00:30:19,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 00:30:19,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:30:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 00:30:19,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-02-15 00:30:19,630 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) [2022-02-15 00:30:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:30:19,794 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2022-02-15 00:30:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 00:30:19,796 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 [2022-02-15 00:30:19,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:30:19,797 INFO L225 Difference]: With dead ends: 61 [2022-02-15 00:30:19,797 INFO L226 Difference]: Without dead ends: 57 [2022-02-15 00:30:19,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-02-15 00:30:19,798 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 [2022-02-15 00:30:19,798 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] [2022-02-15 00:30:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-15 00:30:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-02-15 00:30:19,800 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) [2022-02-15 00:30:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2022-02-15 00:30:19,801 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 89 [2022-02-15 00:30:19,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:30:19,801 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2022-02-15 00:30:19,801 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) [2022-02-15 00:30:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2022-02-15 00:30:19,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-02-15 00:30:19,802 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:30:19,802 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] [2022-02-15 00:30:19,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-15 00:30:20,007 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 [2022-02-15 00:30:20,007 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:30:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:30:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -482784521, now seen corresponding path program 9 times [2022-02-15 00:30:20,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:30:20,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74501868] [2022-02-15 00:30:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:30:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:30:20,015 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-15 00:30:20,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177553165] [2022-02-15 00:30:20,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 00:30:20,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 00:30:20,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:30:20,017 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) [2022-02-15 00:30:20,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process