/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:12:33,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:12:33,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:12:33,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:12:33,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:12:33,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:12:33,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:12:33,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:12:33,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:12:33,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:12:33,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:12:33,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:12:33,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:12:33,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:12:33,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:12:33,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:12:33,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:12:33,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:12:33,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:12:33,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:12:33,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:12:33,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:12:33,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:12:33,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:12:33,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:12:33,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:12:33,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:12:33,840 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:12:33,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:12:33,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:12:33,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:12:33,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:12:33,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:12:33,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:12:33,841 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:12:33,841 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:12:33,841 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:12:33,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:12:33,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:12:33,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:12:33,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:12:33,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:12:33,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:12:33,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:12:33,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:12:33,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:12:33,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:12:33,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:12:33,842 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:12:33,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:12:33,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:12:33,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:12:33,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:12:33,843 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:12:33,843 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:12:34,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:12:34,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:12:34,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:12:34,082 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:12:34,082 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:12:34,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2022-01-11 00:12:34,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34f30060d/3cc48f0e91814b1496b67cd2b5670f35/FLAGe906dff02 [2022-01-11 00:12:34,504 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:12:34,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2022-01-11 00:12:34,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34f30060d/3cc48f0e91814b1496b67cd2b5670f35/FLAGe906dff02 [2022-01-11 00:12:34,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34f30060d/3cc48f0e91814b1496b67cd2b5670f35 [2022-01-11 00:12:34,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:12:34,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:12:34,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:12:34,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:12:34,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:12:34,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303b1911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34, skipping insertion in model container [2022-01-11 00:12:34,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:12:34,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:12:34,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c[946,959] [2022-01-11 00:12:34,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:12:34,745 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:12:34,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c[946,959] [2022-01-11 00:12:34,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:12:34,773 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:12:34,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34 WrapperNode [2022-01-11 00:12:34,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:12:34,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:12:34,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:12:34,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:12:34,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,797 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-01-11 00:12:34,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:12:34,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:12:34,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:12:34,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:12:34,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:12:34,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:12:34,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:12:34,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:12:34,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (1/1) ... [2022-01-11 00:12:34,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:12:34,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:12:34,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:12:34,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:12:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:12:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:12:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-01-11 00:12:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-01-11 00:12:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-01-11 00:12:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-01-11 00:12:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:12:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:12:34,954 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:12:34,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:12:35,086 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:12:35,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:12:35,095 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:12:35,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:12:35 BoogieIcfgContainer [2022-01-11 00:12:35,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:12:35,097 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:12:35,097 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:12:35,098 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:12:35,101 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:12:35" (1/1) ... [2022-01-11 00:12:35,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:12:35 BasicIcfg [2022-01-11 00:12:35,150 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:12:35,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:12:35,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:12:35,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:12:35,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:12:34" (1/4) ... [2022-01-11 00:12:35,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13622fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:12:35, skipping insertion in model container [2022-01-11 00:12:35,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:12:34" (2/4) ... [2022-01-11 00:12:35,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13622fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:12:35, skipping insertion in model container [2022-01-11 00:12:35,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:12:35" (3/4) ... [2022-01-11 00:12:35,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13622fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:12:35, skipping insertion in model container [2022-01-11 00:12:35,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:12:35" (4/4) ... [2022-01-11 00:12:35,156 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.cTransformedIcfg [2022-01-11 00:12:35,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:12:35,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:12:35,212 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:12:35,220 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:12:35,220 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:12:35,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-11 00:12:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 00:12:35,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:12:35,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:12:35,239 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:12:35,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:12:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash 409070419, now seen corresponding path program 1 times [2022-01-11 00:12:35,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:12:35,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811824239] [2022-01-11 00:12:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:35,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:12:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:12:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:12:35,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:12:35,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811824239] [2022-01-11 00:12:35,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811824239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:12:35,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:12:35,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:12:35,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247237385] [2022-01-11 00:12:35,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:12:35,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:12:35,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:12:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:12:35,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:12:35,521 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:12:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:12:35,563 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-01-11 00:12:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:12:35,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-01-11 00:12:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:12:35,572 INFO L225 Difference]: With dead ends: 41 [2022-01-11 00:12:35,572 INFO L226 Difference]: Without dead ends: 25 [2022-01-11 00:12:35,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:12:35,577 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:12:35,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 118 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:12:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-11 00:12:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-11 00:12:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-11 00:12:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-01-11 00:12:35,612 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 10 [2022-01-11 00:12:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:12:35,613 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-01-11 00:12:35,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:12:35,614 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-01-11 00:12:35,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 00:12:35,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:12:35,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:12:35,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:12:35,617 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:12:35,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:12:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash 697486659, now seen corresponding path program 1 times [2022-01-11 00:12:35,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:12:35,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329038079] [2022-01-11 00:12:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:35,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:12:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:35,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:12:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:12:35,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:12:35,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329038079] [2022-01-11 00:12:35,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329038079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:12:35,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:12:35,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:12:35,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138203296] [2022-01-11 00:12:35,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:12:35,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:12:35,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:12:35,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:12:35,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:12:35,718 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:12:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:12:35,794 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-01-11 00:12:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:12:35,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-11 00:12:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:12:35,795 INFO L225 Difference]: With dead ends: 31 [2022-01-11 00:12:35,795 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 00:12:35,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:12:35,796 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:12:35,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 72 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:12:35,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 00:12:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-01-11 00:12:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-11 00:12:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-01-11 00:12:35,802 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 11 [2022-01-11 00:12:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:12:35,802 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-01-11 00:12:35,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:12:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-01-11 00:12:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 00:12:35,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:12:35,803 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:12:35,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:12:35,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:12:35,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:12:35,804 INFO L85 PathProgramCache]: Analyzing trace with hash 63510830, now seen corresponding path program 1 times [2022-01-11 00:12:35,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:12:35,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478643069] [2022-01-11 00:12:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:35,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:12:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:12:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:36,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:12:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 00:12:36,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:12:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478643069] [2022-01-11 00:12:36,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478643069] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:12:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4549989] [2022-01-11 00:12:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:36,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:36,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:12:36,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:12:36,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 00:12:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:36,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 00:12:36,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:12:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 00:12:36,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 00:12:36,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4549989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:12:36,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 00:12:36,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-01-11 00:12:36,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347078483] [2022-01-11 00:12:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:12:36,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 00:12:36,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:12:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 00:12:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-11 00:12:36,357 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 00:12:36,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:12:36,384 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-01-11 00:12:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 00:12:36,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-01-11 00:12:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:12:36,385 INFO L225 Difference]: With dead ends: 38 [2022-01-11 00:12:36,385 INFO L226 Difference]: Without dead ends: 34 [2022-01-11 00:12:36,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-11 00:12:36,387 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:12:36,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 184 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:12:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-11 00:12:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-01-11 00:12:36,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-01-11 00:12:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-01-11 00:12:36,394 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 22 [2022-01-11 00:12:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:12:36,394 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-01-11 00:12:36,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 00:12:36,394 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-01-11 00:12:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 00:12:36,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:12:36,395 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:12:36,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 00:12:36,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:36,610 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:12:36,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:12:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1726490069, now seen corresponding path program 1 times [2022-01-11 00:12:36,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:12:36,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479261260] [2022-01-11 00:12:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:36,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:12:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:36,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:12:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:36,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:12:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 00:12:36,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:12:36,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479261260] [2022-01-11 00:12:36,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479261260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:12:36,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:12:36,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:12:36,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810391717] [2022-01-11 00:12:36,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:12:36,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:12:36,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:12:36,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:12:36,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:12:36,771 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 00:12:36,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:12:36,868 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2022-01-11 00:12:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:12:36,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-01-11 00:12:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:12:36,869 INFO L225 Difference]: With dead ends: 41 [2022-01-11 00:12:36,870 INFO L226 Difference]: Without dead ends: 37 [2022-01-11 00:12:36,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:12:36,871 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:12:36,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 90 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:12:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-11 00:12:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2022-01-11 00:12:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2022-01-11 00:12:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 47 transitions. [2022-01-11 00:12:36,878 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 47 transitions. Word has length 23 [2022-01-11 00:12:36,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:12:36,878 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 47 transitions. [2022-01-11 00:12:36,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 00:12:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 47 transitions. [2022-01-11 00:12:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-11 00:12:36,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:12:36,880 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:12:36,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:12:36,880 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:12:36,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:12:36,881 INFO L85 PathProgramCache]: Analyzing trace with hash -312577904, now seen corresponding path program 1 times [2022-01-11 00:12:36,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:12:36,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518882866] [2022-01-11 00:12:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:36,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:12:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:12:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:12:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:12:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 00:12:37,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:12:37,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518882866] [2022-01-11 00:12:37,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518882866] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:12:37,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133718462] [2022-01-11 00:12:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:37,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:37,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:12:37,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:12:37,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 00:12:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-11 00:12:37,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:12:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-11 00:12:37,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 00:12:37,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133718462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:12:37,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 00:12:37,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2022-01-11 00:12:37,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034578349] [2022-01-11 00:12:37,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:12:37,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 00:12:37,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:12:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 00:12:37,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2022-01-11 00:12:37,486 INFO L87 Difference]: Start difference. First operand 32 states and 47 transitions. Second operand has 10 states, 8 states have (on average 2.125) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 00:12:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:12:37,518 INFO L93 Difference]: Finished difference Result 50 states and 78 transitions. [2022-01-11 00:12:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 00:12:37,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2022-01-11 00:12:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:12:37,520 INFO L225 Difference]: With dead ends: 50 [2022-01-11 00:12:37,520 INFO L226 Difference]: Without dead ends: 46 [2022-01-11 00:12:37,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2022-01-11 00:12:37,521 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:12:37,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 192 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:12:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-11 00:12:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2022-01-11 00:12:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (22), 11 states have call predecessors, (22), 8 states have call successors, (22) [2022-01-11 00:12:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 56 transitions. [2022-01-11 00:12:37,529 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 56 transitions. Word has length 34 [2022-01-11 00:12:37,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:12:37,530 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 56 transitions. [2022-01-11 00:12:37,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 00:12:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 56 transitions. [2022-01-11 00:12:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-11 00:12:37,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:12:37,531 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:12:37,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 00:12:37,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:37,749 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:12:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:12:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash 176289166, now seen corresponding path program 1 times [2022-01-11 00:12:37,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:12:37,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851619147] [2022-01-11 00:12:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:37,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:12:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:12:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:12:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:12:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 00:12:37,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:12:37,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851619147] [2022-01-11 00:12:37,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851619147] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:12:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976595274] [2022-01-11 00:12:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:37,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:37,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:12:37,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:12:37,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 00:12:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:38,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 00:12:38,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:12:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 00:12:38,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:12:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 00:12:38,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976595274] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:12:38,754 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:12:38,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 9] total 22 [2022-01-11 00:12:38,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659432992] [2022-01-11 00:12:38,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:12:38,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-11 00:12:38,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:12:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-11 00:12:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-01-11 00:12:38,760 INFO L87 Difference]: Start difference. First operand 37 states and 56 transitions. Second operand has 22 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2022-01-11 00:12:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:12:39,337 INFO L93 Difference]: Finished difference Result 99 states and 185 transitions. [2022-01-11 00:12:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 00:12:39,338 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) Word has length 35 [2022-01-11 00:12:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:12:39,339 INFO L225 Difference]: With dead ends: 99 [2022-01-11 00:12:39,339 INFO L226 Difference]: Without dead ends: 65 [2022-01-11 00:12:39,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2022-01-11 00:12:39,341 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:12:39,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 312 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 00:12:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-11 00:12:39,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2022-01-11 00:12:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 33 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 11 states have return successors, (41), 15 states have call predecessors, (41), 9 states have call successors, (41) [2022-01-11 00:12:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 84 transitions. [2022-01-11 00:12:39,350 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 84 transitions. Word has length 35 [2022-01-11 00:12:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:12:39,350 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 84 transitions. [2022-01-11 00:12:39,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2022-01-11 00:12:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 84 transitions. [2022-01-11 00:12:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-11 00:12:39,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:12:39,352 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:12:39,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 00:12:39,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:39,571 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:12:39,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:12:39,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1759393138, now seen corresponding path program 2 times [2022-01-11 00:12:39,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:12:39,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651240198] [2022-01-11 00:12:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:39,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:12:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:39,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:12:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:39,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:12:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:12:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 00:12:39,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:12:39,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651240198] [2022-01-11 00:12:39,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651240198] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:12:39,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848483364] [2022-01-11 00:12:39,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 00:12:39,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:39,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:12:39,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:12:39,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 00:12:39,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 00:12:39,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:12:39,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 00:12:39,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:12:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 00:12:39,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:12:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 00:12:40,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848483364] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:12:40,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:12:40,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 19 [2022-01-11 00:12:40,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465393357] [2022-01-11 00:12:40,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:12:40,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-11 00:12:40,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:12:40,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-11 00:12:40,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-01-11 00:12:40,464 INFO L87 Difference]: Start difference. First operand 51 states and 84 transitions. Second operand has 19 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 17 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 8 states have call predecessors, (14), 12 states have call successors, (14) [2022-01-11 00:12:40,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:12:40,949 INFO L93 Difference]: Finished difference Result 141 states and 270 transitions. [2022-01-11 00:12:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 00:12:40,950 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 17 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 8 states have call predecessors, (14), 12 states have call successors, (14) Word has length 35 [2022-01-11 00:12:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:12:40,952 INFO L225 Difference]: With dead ends: 141 [2022-01-11 00:12:40,952 INFO L226 Difference]: Without dead ends: 74 [2022-01-11 00:12:40,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-01-11 00:12:40,954 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 00:12:40,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 231 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 00:12:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-11 00:12:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2022-01-11 00:12:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 11 states have call successors, (11), 4 states have call predecessors, (11), 14 states have return successors, (48), 18 states have call predecessors, (48), 11 states have call successors, (48) [2022-01-11 00:12:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 103 transitions. [2022-01-11 00:12:40,962 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 103 transitions. Word has length 35 [2022-01-11 00:12:40,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:12:40,962 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 103 transitions. [2022-01-11 00:12:40,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 17 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 8 states have call predecessors, (14), 12 states have call successors, (14) [2022-01-11 00:12:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 103 transitions. [2022-01-11 00:12:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-11 00:12:40,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:12:40,964 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:12:40,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 00:12:41,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:41,184 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:12:41,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:12:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash 94684969, now seen corresponding path program 1 times [2022-01-11 00:12:41,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:12:41,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196406771] [2022-01-11 00:12:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:41,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:12:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:41,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:12:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:41,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:41,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:41,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:41,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:12:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 00:12:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:41,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-11 00:12:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 00:12:41,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:12:41,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196406771] [2022-01-11 00:12:41,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196406771] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:12:41,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430172321] [2022-01-11 00:12:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:41,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:41,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:12:41,347 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:12:41,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 00:12:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:41,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 00:12:41,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:12:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 00:12:41,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:12:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-11 00:12:42,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430172321] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:12:42,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:12:42,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2022-01-11 00:12:42,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823506077] [2022-01-11 00:12:42,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:12:42,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-11 00:12:42,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:12:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-11 00:12:42,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-01-11 00:12:42,045 INFO L87 Difference]: Start difference. First operand 65 states and 103 transitions. Second operand has 18 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 10 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-11 00:12:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:12:42,365 INFO L93 Difference]: Finished difference Result 154 states and 294 transitions. [2022-01-11 00:12:42,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:12:42,366 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 10 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) Word has length 47 [2022-01-11 00:12:42,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:12:42,367 INFO L225 Difference]: With dead ends: 154 [2022-01-11 00:12:42,367 INFO L226 Difference]: Without dead ends: 89 [2022-01-11 00:12:42,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-01-11 00:12:42,368 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:12:42,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 237 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 00:12:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-11 00:12:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2022-01-11 00:12:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 51 states have internal predecessors, (55), 14 states have call successors, (14), 5 states have call predecessors, (14), 17 states have return successors, (66), 23 states have call predecessors, (66), 14 states have call successors, (66) [2022-01-11 00:12:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 135 transitions. [2022-01-11 00:12:42,378 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 135 transitions. Word has length 47 [2022-01-11 00:12:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:12:42,379 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 135 transitions. [2022-01-11 00:12:42,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 10 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-11 00:12:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 135 transitions. [2022-01-11 00:12:42,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-11 00:12:42,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:12:42,380 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:12:42,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-11 00:12:42,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:42,596 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:12:42,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:12:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1359840148, now seen corresponding path program 1 times [2022-01-11 00:12:42,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:12:42,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586159358] [2022-01-11 00:12:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:42,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:12:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:42,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:12:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:42,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:12:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:42,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:12:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:12:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-11 00:12:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 00:12:42,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:12:42,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586159358] [2022-01-11 00:12:42,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586159358] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:12:42,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115378998] [2022-01-11 00:12:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:12:42,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:12:42,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:12:42,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:12:42,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 00:12:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:12:42,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-11 00:12:42,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:12:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-11 00:12:43,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:13:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 6 refuted. 2 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-11 00:13:00,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115378998] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:13:00,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:13:00,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 14] total 37 [2022-01-11 00:13:00,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329884745] [2022-01-11 00:13:00,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:13:00,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-11 00:13:00,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:13:00,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-11 00:13:00,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1219, Unknown=6, NotChecked=0, Total=1332 [2022-01-11 00:13:00,981 INFO L87 Difference]: Start difference. First operand 80 states and 135 transitions. Second operand has 37 states, 29 states have (on average 2.103448275862069) internal successors, (61), 24 states have internal predecessors, (61), 12 states have call successors, (14), 1 states have call predecessors, (14), 15 states have return successors, (18), 17 states have call predecessors, (18), 12 states have call successors, (18) [2022-01-11 00:13:03,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:13:03,431 INFO L93 Difference]: Finished difference Result 282 states and 784 transitions. [2022-01-11 00:13:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-11 00:13:03,432 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 29 states have (on average 2.103448275862069) internal successors, (61), 24 states have internal predecessors, (61), 12 states have call successors, (14), 1 states have call predecessors, (14), 15 states have return successors, (18), 17 states have call predecessors, (18), 12 states have call successors, (18) Word has length 47 [2022-01-11 00:13:03,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:13:03,435 INFO L225 Difference]: With dead ends: 282 [2022-01-11 00:13:03,435 INFO L226 Difference]: Without dead ends: 201 [2022-01-11 00:13:03,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1352 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=526, Invalid=5168, Unknown=6, NotChecked=0, Total=5700 [2022-01-11 00:13:03,439 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 00:13:03,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 343 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 869 Invalid, 0 Unknown, 7 Unchecked, 0.8s Time] [2022-01-11 00:13:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-01-11 00:13:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 126. [2022-01-11 00:13:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 77 states have internal predecessors, (79), 23 states have call successors, (23), 5 states have call predecessors, (23), 30 states have return successors, (217), 43 states have call predecessors, (217), 23 states have call successors, (217) [2022-01-11 00:13:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 319 transitions. [2022-01-11 00:13:03,468 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 319 transitions. Word has length 47 [2022-01-11 00:13:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:13:03,468 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 319 transitions. [2022-01-11 00:13:03,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 29 states have (on average 2.103448275862069) internal successors, (61), 24 states have internal predecessors, (61), 12 states have call successors, (14), 1 states have call predecessors, (14), 15 states have return successors, (18), 17 states have call predecessors, (18), 12 states have call successors, (18) [2022-01-11 00:13:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 319 transitions. [2022-01-11 00:13:03,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 00:13:03,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:13:03,470 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:13:03,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-11 00:13:03,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:13:03,688 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:13:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:13:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1733964340, now seen corresponding path program 3 times [2022-01-11 00:13:03,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:13:03,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79041116] [2022-01-11 00:13:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:13:03,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:13:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:13:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:03,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:13:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:04,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 00:13:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 00:13:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:04,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-11 00:13:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 24 proven. 36 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-01-11 00:13:04,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:13:04,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79041116] [2022-01-11 00:13:04,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79041116] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:13:04,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356682789] [2022-01-11 00:13:04,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 00:13:04,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:13:04,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:13:04,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:13:04,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-11 00:13:04,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-11 00:13:04,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:13:04,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 00:13:04,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:13:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-01-11 00:13:04,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:13:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-01-11 00:13:04,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356682789] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:13:04,879 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:13:04,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 21 [2022-01-11 00:13:04,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189650689] [2022-01-11 00:13:04,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:13:04,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-11 00:13:04,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:13:04,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-11 00:13:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-01-11 00:13:04,880 INFO L87 Difference]: Start difference. First operand 126 states and 319 transitions. Second operand has 21 states, 16 states have (on average 3.0) internal successors, (48), 20 states have internal predecessors, (48), 9 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (17), 7 states have call predecessors, (17), 9 states have call successors, (17) [2022-01-11 00:13:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:13:05,241 INFO L93 Difference]: Finished difference Result 252 states and 688 transitions. [2022-01-11 00:13:05,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 00:13:05,242 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 3.0) internal successors, (48), 20 states have internal predecessors, (48), 9 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (17), 7 states have call predecessors, (17), 9 states have call successors, (17) Word has length 71 [2022-01-11 00:13:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:13:05,244 INFO L225 Difference]: With dead ends: 252 [2022-01-11 00:13:05,244 INFO L226 Difference]: Without dead ends: 129 [2022-01-11 00:13:05,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-01-11 00:13:05,246 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 57 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:13:05,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 151 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:13:05,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-11 00:13:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 96. [2022-01-11 00:13:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 60 states have internal predecessors, (64), 17 states have call successors, (17), 6 states have call predecessors, (17), 21 states have return successors, (99), 29 states have call predecessors, (99), 17 states have call successors, (99) [2022-01-11 00:13:05,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 180 transitions. [2022-01-11 00:13:05,257 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 180 transitions. Word has length 71 [2022-01-11 00:13:05,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:13:05,258 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 180 transitions. [2022-01-11 00:13:05,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 3.0) internal successors, (48), 20 states have internal predecessors, (48), 9 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (17), 7 states have call predecessors, (17), 9 states have call successors, (17) [2022-01-11 00:13:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 180 transitions. [2022-01-11 00:13:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-11 00:13:05,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:13:05,259 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:13:05,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-11 00:13:05,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:13:05,476 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:13:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:13:05,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1929615941, now seen corresponding path program 1 times [2022-01-11 00:13:05,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:13:05,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541931700] [2022-01-11 00:13:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:13:05,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:13:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:13:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-11 00:13:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-11 00:13:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:13:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-11 00:13:05,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:13:05,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541931700] [2022-01-11 00:13:05,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541931700] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:13:05,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530602260] [2022-01-11 00:13:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:13:05,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:13:05,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:13:05,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:13:05,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-11 00:13:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:06,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-11 00:13:06,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:13:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 137 proven. 9 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-01-11 00:13:07,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:13:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-11 00:13:08,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530602260] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:13:08,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:13:08,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 9] total 33 [2022-01-11 00:13:08,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68095714] [2022-01-11 00:13:08,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:13:08,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-11 00:13:08,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:13:08,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-11 00:13:08,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2022-01-11 00:13:08,083 INFO L87 Difference]: Start difference. First operand 96 states and 180 transitions. Second operand has 33 states, 24 states have (on average 3.25) internal successors, (78), 27 states have internal predecessors, (78), 18 states have call successors, (27), 2 states have call predecessors, (27), 12 states have return successors, (30), 14 states have call predecessors, (30), 18 states have call successors, (30) [2022-01-11 00:13:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:13:09,707 INFO L93 Difference]: Finished difference Result 204 states and 431 transitions. [2022-01-11 00:13:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-11 00:13:09,708 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 24 states have (on average 3.25) internal successors, (78), 27 states have internal predecessors, (78), 18 states have call successors, (27), 2 states have call predecessors, (27), 12 states have return successors, (30), 14 states have call predecessors, (30), 18 states have call successors, (30) Word has length 97 [2022-01-11 00:13:09,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:13:09,709 INFO L225 Difference]: With dead ends: 204 [2022-01-11 00:13:09,709 INFO L226 Difference]: Without dead ends: 105 [2022-01-11 00:13:09,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=418, Invalid=2552, Unknown=0, NotChecked=0, Total=2970 [2022-01-11 00:13:09,711 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 121 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 00:13:09,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 374 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 00:13:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-11 00:13:09,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2022-01-11 00:13:09,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 58 states have internal predecessors, (65), 16 states have call successors, (16), 9 states have call predecessors, (16), 15 states have return successors, (45), 19 states have call predecessors, (45), 16 states have call successors, (45) [2022-01-11 00:13:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 126 transitions. [2022-01-11 00:13:09,719 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 126 transitions. Word has length 97 [2022-01-11 00:13:09,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:13:09,719 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 126 transitions. [2022-01-11 00:13:09,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 24 states have (on average 3.25) internal successors, (78), 27 states have internal predecessors, (78), 18 states have call successors, (27), 2 states have call predecessors, (27), 12 states have return successors, (30), 14 states have call predecessors, (30), 18 states have call successors, (30) [2022-01-11 00:13:09,719 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 126 transitions. [2022-01-11 00:13:09,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-11 00:13:09,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:13:09,720 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:13:09,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-11 00:13:09,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 00:13:09,924 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:13:09,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:13:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash 439286884, now seen corresponding path program 2 times [2022-01-11 00:13:09,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:13:09,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677947901] [2022-01-11 00:13:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:13:09,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:13:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:13:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-11 00:13:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-11 00:13:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-11 00:13:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 41 proven. 66 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-01-11 00:13:10,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:13:10,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677947901] [2022-01-11 00:13:10,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677947901] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:13:10,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418953551] [2022-01-11 00:13:10,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 00:13:10,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:13:10,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:13:10,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:13:10,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-11 00:13:10,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 00:13:10,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:13:10,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-11 00:13:10,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:13:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-01-11 00:13:13,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:13:14,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418953551] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:13:14,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 00:13:14,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20] total 32 [2022-01-11 00:13:14,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921591062] [2022-01-11 00:13:14,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 00:13:14,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-11 00:13:14,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:13:14,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-11 00:13:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1453, Unknown=0, NotChecked=0, Total=1560 [2022-01-11 00:13:14,168 INFO L87 Difference]: Start difference. First operand 87 states and 126 transitions. Second operand has 32 states, 25 states have (on average 2.2) internal successors, (55), 20 states have internal predecessors, (55), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (21), 18 states have call predecessors, (21), 11 states have call successors, (21) [2022-01-11 00:13:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:13:15,952 INFO L93 Difference]: Finished difference Result 166 states and 326 transitions. [2022-01-11 00:13:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-11 00:13:15,952 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 25 states have (on average 2.2) internal successors, (55), 20 states have internal predecessors, (55), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (21), 18 states have call predecessors, (21), 11 states have call successors, (21) Word has length 97 [2022-01-11 00:13:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:13:15,954 INFO L225 Difference]: With dead ends: 166 [2022-01-11 00:13:15,954 INFO L226 Difference]: Without dead ends: 160 [2022-01-11 00:13:15,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=445, Invalid=4957, Unknown=0, NotChecked=0, Total=5402 [2022-01-11 00:13:15,956 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 41 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 00:13:15,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 474 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 00:13:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-11 00:13:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 111. [2022-01-11 00:13:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 70 states have internal predecessors, (77), 22 states have call successors, (22), 9 states have call predecessors, (22), 21 states have return successors, (100), 31 states have call predecessors, (100), 22 states have call successors, (100) [2022-01-11 00:13:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 199 transitions. [2022-01-11 00:13:15,969 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 199 transitions. Word has length 97 [2022-01-11 00:13:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:13:15,969 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 199 transitions. [2022-01-11 00:13:15,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 25 states have (on average 2.2) internal successors, (55), 20 states have internal predecessors, (55), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (21), 18 states have call predecessors, (21), 11 states have call successors, (21) [2022-01-11 00:13:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 199 transitions. [2022-01-11 00:13:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-11 00:13:15,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:13:15,971 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 12, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:13:16,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-11 00:13:16,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:13:16,189 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:13:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:13:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1889955325, now seen corresponding path program 2 times [2022-01-11 00:13:16,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:13:16,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379988526] [2022-01-11 00:13:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:13:16,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:13:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:13:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-11 00:13:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-11 00:13:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-11 00:13:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-11 00:13:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-11 00:13:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:13:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1313 backedges. 74 proven. 286 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2022-01-11 00:13:16,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:13:16,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379988526] [2022-01-11 00:13:16,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379988526] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:13:16,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29970906] [2022-01-11 00:13:16,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 00:13:16,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:13:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:13:17,136 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) [2022-01-11 00:13:17,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-11 00:13:17,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 00:13:17,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:13:17,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-11 00:13:17,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:13:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1313 backedges. 243 proven. 94 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2022-01-11 00:13:18,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:13:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1313 backedges. 243 proven. 105 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2022-01-11 00:13:19,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29970906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:13:19,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:13:19,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 13] total 32 [2022-01-11 00:13:19,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912937387] [2022-01-11 00:13:19,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:13:19,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-11 00:13:19,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:13:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-11 00:13:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-01-11 00:13:19,699 INFO L87 Difference]: Start difference. First operand 111 states and 199 transitions. Second operand has 32 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 30 states have internal predecessors, (77), 16 states have call successors, (25), 1 states have call predecessors, (25), 14 states have return successors, (30), 17 states have call predecessors, (30), 16 states have call successors, (30) [2022-01-11 00:13:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:13:20,680 INFO L93 Difference]: Finished difference Result 241 states and 460 transitions. [2022-01-11 00:13:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-11 00:13:20,681 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 30 states have internal predecessors, (77), 16 states have call successors, (25), 1 states have call predecessors, (25), 14 states have return successors, (30), 17 states have call predecessors, (30), 16 states have call successors, (30) Word has length 209 [2022-01-11 00:13:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:13:20,682 INFO L225 Difference]: With dead ends: 241 [2022-01-11 00:13:20,683 INFO L226 Difference]: Without dead ends: 129 [2022-01-11 00:13:20,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 466 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2022-01-11 00:13:20,684 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 60 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 00:13:20,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 421 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 00:13:20,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-11 00:13:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2022-01-11 00:13:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 73 states have internal predecessors, (79), 20 states have call successors, (20), 10 states have call predecessors, (20), 22 states have return successors, (84), 30 states have call predecessors, (84), 20 states have call successors, (84) [2022-01-11 00:13:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 183 transitions. [2022-01-11 00:13:20,695 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 183 transitions. Word has length 209 [2022-01-11 00:13:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:13:20,695 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 183 transitions. [2022-01-11 00:13:20,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 30 states have internal predecessors, (77), 16 states have call successors, (25), 1 states have call predecessors, (25), 14 states have return successors, (30), 17 states have call predecessors, (30), 16 states have call successors, (30) [2022-01-11 00:13:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 183 transitions. [2022-01-11 00:13:20,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-11 00:13:20,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:13:20,697 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 10, 10, 9, 9, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:13:20,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-11 00:13:20,909 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,SelfDestructingSolverStorable12 [2022-01-11 00:13:20,910 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:13:20,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:13:20,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1687583745, now seen corresponding path program 3 times [2022-01-11 00:13:20,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:13:20,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026750294] [2022-01-11 00:13:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:13:20,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:13:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:20,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:13:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:21,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:21,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:21,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:21,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:13:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 00:13:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-11 00:13:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:13:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 214 proven. 216 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-01-11 00:13:22,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:13:22,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026750294] [2022-01-11 00:13:22,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026750294] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:13:22,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590568630] [2022-01-11 00:13:22,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 00:13:22,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:13:22,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:13:22,766 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) [2022-01-11 00:13:22,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-11 00:13:22,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-11 00:13:22,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:13:22,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-11 00:13:22,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:13:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 240 proven. 16 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-01-11 00:13:24,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:13:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 167 proven. 6 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-01-11 00:13:26,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590568630] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:13:26,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:13:26,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 16, 10] total 57 [2022-01-11 00:13:26,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997947276] [2022-01-11 00:13:26,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:13:26,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-11 00:13:26,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:13:26,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-11 00:13:26,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2912, Unknown=0, NotChecked=0, Total=3192 [2022-01-11 00:13:26,266 INFO L87 Difference]: Start difference. First operand 114 states and 183 transitions. Second operand has 57 states, 38 states have (on average 2.5) internal successors, (95), 45 states have internal predecessors, (95), 26 states have call successors, (31), 1 states have call predecessors, (31), 19 states have return successors, (35), 25 states have call predecessors, (35), 26 states have call successors, (35) [2022-01-11 00:13:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:13:30,896 INFO L93 Difference]: Finished difference Result 223 states and 405 transitions. [2022-01-11 00:13:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-11 00:13:30,898 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 38 states have (on average 2.5) internal successors, (95), 45 states have internal predecessors, (95), 26 states have call successors, (31), 1 states have call predecessors, (31), 19 states have return successors, (35), 25 states have call predecessors, (35), 26 states have call successors, (35) Word has length 149 [2022-01-11 00:13:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:13:30,901 INFO L225 Difference]: With dead ends: 223 [2022-01-11 00:13:30,901 INFO L226 Difference]: Without dead ends: 107 [2022-01-11 00:13:30,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 315 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=659, Invalid=5193, Unknown=0, NotChecked=0, Total=5852 [2022-01-11 00:13:30,904 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 133 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-11 00:13:30,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 666 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-11 00:13:30,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-11 00:13:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2022-01-11 00:13:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 67 states have internal predecessors, (74), 18 states have call successors, (18), 14 states have call predecessors, (18), 14 states have return successors, (39), 20 states have call predecessors, (39), 18 states have call successors, (39) [2022-01-11 00:13:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2022-01-11 00:13:30,914 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 149 [2022-01-11 00:13:30,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:13:30,914 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2022-01-11 00:13:30,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 38 states have (on average 2.5) internal successors, (95), 45 states have internal predecessors, (95), 26 states have call successors, (31), 1 states have call predecessors, (31), 19 states have return successors, (35), 25 states have call predecessors, (35), 26 states have call successors, (35) [2022-01-11 00:13:30,914 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2022-01-11 00:13:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-01-11 00:13:30,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:13:30,916 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:13:30,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-11 00:13:31,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-11 00:13:31,123 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:13:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:13:31,124 INFO L85 PathProgramCache]: Analyzing trace with hash 820425766, now seen corresponding path program 4 times [2022-01-11 00:13:31,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:13:31,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696121394] [2022-01-11 00:13:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:13:31,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:13:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 00:13:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:31,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:31,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:13:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 00:13:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-11 00:13:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:13:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:32,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 00:13:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 00:13:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-11 00:13:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:13:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 00:13:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 00:13:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:13:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2126 backedges. 442 proven. 666 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2022-01-11 00:13:33,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:13:33,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696121394] [2022-01-11 00:13:33,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696121394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:13:33,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743737718] [2022-01-11 00:13:33,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 00:13:33,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:13:33,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:13:33,502 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:13:33,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-11 00:13:34,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 00:13:34,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:13:34,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-11 00:13:34,310 INFO L286 TraceCheckSpWp]: Computing forward predicates...