/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_BITWISE.epf -i ../../../trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:36:18,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:36:18,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:36:18,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 12:36:18,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:36:18,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:36:18,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:36:18,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:36:18,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:36:18,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:36:18,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:36:18,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:36:18,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:36:18,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:36:18,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:36:18,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:36:18,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 12:36:18,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:36:18,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:36:18,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:36:18,707 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:36:18,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:36:18,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:36:18,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:36:18,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:36:18,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:36:18,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:36:18,723 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:36:18,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:36:18,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:36:18,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:36:18,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:36:18,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:36:18,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:36:18,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:36:18,724 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:36:18,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:36:18,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:36:18,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:36:18,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:36:18,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:36:18,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:36:18,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:36:18,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:36:18,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:36:18,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:36:18,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:36:18,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:36:18,726 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:36:18,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:36:18,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:36:18,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:36:18,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:36:18,727 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:36:18,727 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:36:18,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:36:18,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:36:18,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:36:18,958 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:36:18,959 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:36:18,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c [2022-01-10 12:36:19,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55feacda5/a3cfa281ee9f47a391a2768bfbc9b127/FLAG3be7ae70a [2022-01-10 12:36:19,395 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:36:19,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c [2022-01-10 12:36:19,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55feacda5/a3cfa281ee9f47a391a2768bfbc9b127/FLAG3be7ae70a [2022-01-10 12:36:19,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55feacda5/a3cfa281ee9f47a391a2768bfbc9b127 [2022-01-10 12:36:19,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:36:19,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:36:19,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:36:19,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:36:19,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:36:19,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ede5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19, skipping insertion in model container [2022-01-10 12:36:19,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:36:19,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:36:19,642 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c[646,659] [2022-01-10 12:36:19,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:36:19,742 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:36:19,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c[646,659] [2022-01-10 12:36:19,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:36:19,796 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:36:19,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19 WrapperNode [2022-01-10 12:36:19,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:36:19,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:36:19,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:36:19,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:36:19,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,837 INFO L137 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 868 [2022-01-10 12:36:19,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:36:19,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:36:19,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:36:19,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:36:19,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:36:19,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:36:19,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:36:19,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:36:19,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (1/1) ... [2022-01-10 12:36:19,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:36:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:36:19,936 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) [2022-01-10 12:36:19,957 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 [2022-01-10 12:36:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:36:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:36:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:36:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:36:20,024 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:36:20,025 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:36:20,509 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:36:20,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:36:20,515 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-10 12:36:20,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:36:20 BoogieIcfgContainer [2022-01-10 12:36:20,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:36:20,517 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:36:20,517 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:36:20,518 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:36:20,520 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:36:20" (1/1) ... [2022-01-10 12:36:20,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:36:20 BasicIcfg [2022-01-10 12:36:20,671 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:36:20,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:36:20,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:36:20,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:36:20,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:36:19" (1/4) ... [2022-01-10 12:36:20,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c62baf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:36:20, skipping insertion in model container [2022-01-10 12:36:20,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:19" (2/4) ... [2022-01-10 12:36:20,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c62baf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:36:20, skipping insertion in model container [2022-01-10 12:36:20,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:36:20" (3/4) ... [2022-01-10 12:36:20,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c62baf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:36:20, skipping insertion in model container [2022-01-10 12:36:20,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:36:20" (4/4) ... [2022-01-10 12:36:20,676 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.2.cil.cTransformedIcfg [2022-01-10 12:36:20,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:36:20,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 12:36:20,714 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:36:20,719 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 [2022-01-10 12:36:20,719 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 12:36:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 273 states have (on average 1.8424908424908424) internal successors, (503), 278 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:20,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 12:36:20,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:20,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:20,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1012852670, now seen corresponding path program 1 times [2022-01-10 12:36:20,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:20,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890386141] [2022-01-10 12:36:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:20,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:20,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:20,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890386141] [2022-01-10 12:36:20,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890386141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:20,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:20,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:20,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353024122] [2022-01-10 12:36:20,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:20,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:20,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:21,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:21,014 INFO L87 Difference]: Start difference. First operand has 279 states, 273 states have (on average 1.8424908424908424) internal successors, (503), 278 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:21,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:21,339 INFO L93 Difference]: Finished difference Result 730 states and 1315 transitions. [2022-01-10 12:36:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-10 12:36:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:21,353 INFO L225 Difference]: With dead ends: 730 [2022-01-10 12:36:21,353 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 12:36:21,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:21,361 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 258 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:21,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 771 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:36:21,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 12:36:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 432. [2022-01-10 12:36:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 427 states have (on average 1.5878220140515222) internal successors, (678), 431 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:21,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 678 transitions. [2022-01-10 12:36:21,431 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 678 transitions. Word has length 28 [2022-01-10 12:36:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:21,431 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 678 transitions. [2022-01-10 12:36:21,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 678 transitions. [2022-01-10 12:36:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 12:36:21,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:21,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:21,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:36:21,439 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:21,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1820563967, now seen corresponding path program 1 times [2022-01-10 12:36:21,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:21,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858925407] [2022-01-10 12:36:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:21,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:21,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:21,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858925407] [2022-01-10 12:36:21,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858925407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:21,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:21,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:21,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685056920] [2022-01-10 12:36:21,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:21,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:21,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:21,534 INFO L87 Difference]: Start difference. First operand 432 states and 678 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:21,625 INFO L93 Difference]: Finished difference Result 1223 states and 1910 transitions. [2022-01-10 12:36:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:21,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-10 12:36:21,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:21,628 INFO L225 Difference]: With dead ends: 1223 [2022-01-10 12:36:21,628 INFO L226 Difference]: Without dead ends: 802 [2022-01-10 12:36:21,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:21,630 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 365 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:21,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 813 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:36:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-01-10 12:36:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 788. [2022-01-10 12:36:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 783 states have (on average 1.528735632183908) internal successors, (1197), 787 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1197 transitions. [2022-01-10 12:36:21,682 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1197 transitions. Word has length 37 [2022-01-10 12:36:21,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:21,682 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1197 transitions. [2022-01-10 12:36:21,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1197 transitions. [2022-01-10 12:36:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 12:36:21,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:21,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:21,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:36:21,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:21,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:21,684 INFO L85 PathProgramCache]: Analyzing trace with hash 207500605, now seen corresponding path program 1 times [2022-01-10 12:36:21,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:21,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911392111] [2022-01-10 12:36:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:21,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:21,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:21,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911392111] [2022-01-10 12:36:21,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911392111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:21,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:21,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:21,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218202819] [2022-01-10 12:36:21,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:21,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:21,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:21,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:21,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:21,730 INFO L87 Difference]: Start difference. First operand 788 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:21,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:21,833 INFO L93 Difference]: Finished difference Result 2073 states and 3199 transitions. [2022-01-10 12:36:21,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:21,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-10 12:36:21,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:21,837 INFO L225 Difference]: With dead ends: 2073 [2022-01-10 12:36:21,838 INFO L226 Difference]: Without dead ends: 1297 [2022-01-10 12:36:21,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:21,840 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 315 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:21,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 984 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:36:21,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-01-10 12:36:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1275. [2022-01-10 12:36:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1270 states have (on average 1.5661417322834645) internal successors, (1989), 1274 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1989 transitions. [2022-01-10 12:36:21,868 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1989 transitions. Word has length 37 [2022-01-10 12:36:21,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:21,868 INFO L470 AbstractCegarLoop]: Abstraction has 1275 states and 1989 transitions. [2022-01-10 12:36:21,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:21,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1989 transitions. [2022-01-10 12:36:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 12:36:21,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:21,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:21,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:36:21,869 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:21,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:21,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1637595720, now seen corresponding path program 1 times [2022-01-10 12:36:21,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:21,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115080596] [2022-01-10 12:36:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:21,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:21,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:21,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115080596] [2022-01-10 12:36:21,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115080596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:21,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:21,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:21,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73781010] [2022-01-10 12:36:21,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:21,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:21,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:21,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:21,901 INFO L87 Difference]: Start difference. First operand 1275 states and 1989 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:21,955 INFO L93 Difference]: Finished difference Result 3195 states and 4995 transitions. [2022-01-10 12:36:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-10 12:36:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:21,964 INFO L225 Difference]: With dead ends: 3195 [2022-01-10 12:36:21,964 INFO L226 Difference]: Without dead ends: 1941 [2022-01-10 12:36:21,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:21,971 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 342 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:21,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 801 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:21,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2022-01-10 12:36:22,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1907. [2022-01-10 12:36:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1902 states have (on average 1.5662460567823344) internal successors, (2979), 1906 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2979 transitions. [2022-01-10 12:36:22,020 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2979 transitions. Word has length 38 [2022-01-10 12:36:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:22,020 INFO L470 AbstractCegarLoop]: Abstraction has 1907 states and 2979 transitions. [2022-01-10 12:36:22,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2979 transitions. [2022-01-10 12:36:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 12:36:22,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:22,021 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:22,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:36:22,022 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1232226658, now seen corresponding path program 1 times [2022-01-10 12:36:22,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:22,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358736277] [2022-01-10 12:36:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:22,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:22,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:22,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358736277] [2022-01-10 12:36:22,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358736277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:22,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:22,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:22,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442683816] [2022-01-10 12:36:22,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:22,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:22,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:22,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:22,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:22,146 INFO L87 Difference]: Start difference. First operand 1907 states and 2979 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:22,210 INFO L93 Difference]: Finished difference Result 4720 states and 7404 transitions. [2022-01-10 12:36:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:22,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-01-10 12:36:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:22,218 INFO L225 Difference]: With dead ends: 4720 [2022-01-10 12:36:22,218 INFO L226 Difference]: Without dead ends: 2834 [2022-01-10 12:36:22,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:22,224 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 403 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:22,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 1037 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:22,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-01-10 12:36:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2668. [2022-01-10 12:36:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2663 states have (on average 1.5565152084115659) internal successors, (4145), 2667 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4145 transitions. [2022-01-10 12:36:22,295 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4145 transitions. Word has length 47 [2022-01-10 12:36:22,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:22,296 INFO L470 AbstractCegarLoop]: Abstraction has 2668 states and 4145 transitions. [2022-01-10 12:36:22,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4145 transitions. [2022-01-10 12:36:22,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 12:36:22,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:22,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:22,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:36:22,303 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:22,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash 176774288, now seen corresponding path program 1 times [2022-01-10 12:36:22,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:22,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362687927] [2022-01-10 12:36:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:22,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:22,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:22,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362687927] [2022-01-10 12:36:22,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362687927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:22,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:22,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:22,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315293178] [2022-01-10 12:36:22,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:22,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:22,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:22,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:22,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:22,348 INFO L87 Difference]: Start difference. First operand 2668 states and 4145 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:22,440 INFO L93 Difference]: Finished difference Result 5535 states and 8617 transitions. [2022-01-10 12:36:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:22,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 12:36:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:22,448 INFO L225 Difference]: With dead ends: 5535 [2022-01-10 12:36:22,448 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 12:36:22,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:22,453 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 360 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:22,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 702 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 12:36:22,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2827. [2022-01-10 12:36:22,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2822 states have (on average 1.5464209780297662) internal successors, (4364), 2826 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 4364 transitions. [2022-01-10 12:36:22,523 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 4364 transitions. Word has length 52 [2022-01-10 12:36:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:22,523 INFO L470 AbstractCegarLoop]: Abstraction has 2827 states and 4364 transitions. [2022-01-10 12:36:22,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 4364 transitions. [2022-01-10 12:36:22,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:36:22,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:22,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:22,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:36:22,525 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:22,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:22,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1363479245, now seen corresponding path program 1 times [2022-01-10 12:36:22,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:22,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654389533] [2022-01-10 12:36:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:22,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:22,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:22,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654389533] [2022-01-10 12:36:22,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654389533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:22,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:22,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:22,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719355121] [2022-01-10 12:36:22,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:22,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:22,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:22,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:22,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:22,595 INFO L87 Difference]: Start difference. First operand 2827 states and 4364 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:22,875 INFO L93 Difference]: Finished difference Result 6778 states and 10552 transitions. [2022-01-10 12:36:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:22,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 12:36:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:22,888 INFO L225 Difference]: With dead ends: 6778 [2022-01-10 12:36:22,888 INFO L226 Difference]: Without dead ends: 4021 [2022-01-10 12:36:22,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:22,893 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 352 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:22,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 766 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:36:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2022-01-10 12:36:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3934. [2022-01-10 12:36:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3929 states have (on average 1.532196487655892) internal successors, (6020), 3933 states have internal predecessors, (6020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 6020 transitions. [2022-01-10 12:36:22,997 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 6020 transitions. Word has length 58 [2022-01-10 12:36:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:22,998 INFO L470 AbstractCegarLoop]: Abstraction has 3934 states and 6020 transitions. [2022-01-10 12:36:22,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 6020 transitions. [2022-01-10 12:36:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:36:22,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:22,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:22,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:36:22,999 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:23,000 INFO L85 PathProgramCache]: Analyzing trace with hash -863494864, now seen corresponding path program 1 times [2022-01-10 12:36:23,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:23,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807818410] [2022-01-10 12:36:23,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:23,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:23,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:23,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807818410] [2022-01-10 12:36:23,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807818410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:23,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:23,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:23,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395841473] [2022-01-10 12:36:23,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:23,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:23,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:23,050 INFO L87 Difference]: Start difference. First operand 3934 states and 6020 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:23,177 INFO L93 Difference]: Finished difference Result 7798 states and 11956 transitions. [2022-01-10 12:36:23,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:23,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 12:36:23,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:23,187 INFO L225 Difference]: With dead ends: 7798 [2022-01-10 12:36:23,187 INFO L226 Difference]: Without dead ends: 3934 [2022-01-10 12:36:23,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:23,191 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 337 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:23,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 435 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:23,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2022-01-10 12:36:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3934. [2022-01-10 12:36:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3929 states have (on average 1.5092898956477476) internal successors, (5930), 3933 states have internal predecessors, (5930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 5930 transitions. [2022-01-10 12:36:23,292 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 5930 transitions. Word has length 60 [2022-01-10 12:36:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:23,292 INFO L470 AbstractCegarLoop]: Abstraction has 3934 states and 5930 transitions. [2022-01-10 12:36:23,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 5930 transitions. [2022-01-10 12:36:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:36:23,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:23,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:23,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:36:23,293 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:23,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1017326261, now seen corresponding path program 1 times [2022-01-10 12:36:23,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:23,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821032564] [2022-01-10 12:36:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:23,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:23,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:23,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821032564] [2022-01-10 12:36:23,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821032564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:23,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:23,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:23,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548542156] [2022-01-10 12:36:23,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:23,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:23,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:23,320 INFO L87 Difference]: Start difference. First operand 3934 states and 5930 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:23,594 INFO L93 Difference]: Finished difference Result 8870 states and 13414 transitions. [2022-01-10 12:36:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:36:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:23,608 INFO L225 Difference]: With dead ends: 8870 [2022-01-10 12:36:23,608 INFO L226 Difference]: Without dead ends: 5006 [2022-01-10 12:36:23,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:23,613 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 235 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:23,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 841 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:36:23,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2022-01-10 12:36:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 4926. [2022-01-10 12:36:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4926 states, 4921 states have (on average 1.4732777890672628) internal successors, (7250), 4925 states have internal predecessors, (7250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4926 states to 4926 states and 7250 transitions. [2022-01-10 12:36:23,739 INFO L78 Accepts]: Start accepts. Automaton has 4926 states and 7250 transitions. Word has length 61 [2022-01-10 12:36:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:23,740 INFO L470 AbstractCegarLoop]: Abstraction has 4926 states and 7250 transitions. [2022-01-10 12:36:23,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4926 states and 7250 transitions. [2022-01-10 12:36:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:36:23,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:23,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:23,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:36:23,753 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:23,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1578578735, now seen corresponding path program 1 times [2022-01-10 12:36:23,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:23,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667212020] [2022-01-10 12:36:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:23,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:23,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:23,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667212020] [2022-01-10 12:36:23,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667212020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:23,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:23,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:36:23,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159247206] [2022-01-10 12:36:23,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:23,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:36:23,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:23,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:36:23,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:36:23,791 INFO L87 Difference]: Start difference. First operand 4926 states and 7250 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:24,377 INFO L93 Difference]: Finished difference Result 23901 states and 35308 transitions. [2022-01-10 12:36:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:36:24,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 12:36:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:24,412 INFO L225 Difference]: With dead ends: 23901 [2022-01-10 12:36:24,412 INFO L226 Difference]: Without dead ends: 19318 [2022-01-10 12:36:24,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:36:24,421 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 1540 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 4142 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:24,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 4142 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:36:24,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19318 states. [2022-01-10 12:36:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19318 to 6866. [2022-01-10 12:36:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6866 states, 6861 states have (on average 1.4726716222125054) internal successors, (10104), 6865 states have internal predecessors, (10104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6866 states to 6866 states and 10104 transitions. [2022-01-10 12:36:24,745 INFO L78 Accepts]: Start accepts. Automaton has 6866 states and 10104 transitions. Word has length 63 [2022-01-10 12:36:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:24,745 INFO L470 AbstractCegarLoop]: Abstraction has 6866 states and 10104 transitions. [2022-01-10 12:36:24,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6866 states and 10104 transitions. [2022-01-10 12:36:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:36:24,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:24,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:24,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:36:24,748 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:24,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:24,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1692257741, now seen corresponding path program 1 times [2022-01-10 12:36:24,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:24,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587998347] [2022-01-10 12:36:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:24,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:24,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:24,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587998347] [2022-01-10 12:36:24,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587998347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:24,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:24,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:36:24,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834041427] [2022-01-10 12:36:24,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:24,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:36:24,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:24,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:36:24,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:36:24,885 INFO L87 Difference]: Start difference. First operand 6866 states and 10104 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:26,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:26,656 INFO L93 Difference]: Finished difference Result 32042 states and 47331 transitions. [2022-01-10 12:36:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 12:36:26,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 12:36:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:26,696 INFO L225 Difference]: With dead ends: 32042 [2022-01-10 12:36:26,696 INFO L226 Difference]: Without dead ends: 25197 [2022-01-10 12:36:26,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2022-01-10 12:36:26,707 INFO L933 BasicCegarLoop]: 1821 mSDtfsCounter, 3404 mSDsluCounter, 7451 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3404 SdHoareTripleChecker+Valid, 9272 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:26,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3404 Valid, 9272 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:36:26,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25197 states. [2022-01-10 12:36:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25197 to 4321. [2022-01-10 12:36:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4316 states have (on average 1.4610750695088044) internal successors, (6306), 4320 states have internal predecessors, (6306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 6306 transitions. [2022-01-10 12:36:27,133 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 6306 transitions. Word has length 64 [2022-01-10 12:36:27,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:27,147 INFO L470 AbstractCegarLoop]: Abstraction has 4321 states and 6306 transitions. [2022-01-10 12:36:27,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 6306 transitions. [2022-01-10 12:36:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 12:36:27,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:27,152 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:27,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:36:27,152 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash -286964195, now seen corresponding path program 1 times [2022-01-10 12:36:27,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:27,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360842103] [2022-01-10 12:36:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:27,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:27,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:27,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360842103] [2022-01-10 12:36:27,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360842103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:27,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:27,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:27,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902915432] [2022-01-10 12:36:27,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:27,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:27,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:27,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:27,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:27,257 INFO L87 Difference]: Start difference. First operand 4321 states and 6306 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:27,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:27,798 INFO L93 Difference]: Finished difference Result 10634 states and 15474 transitions. [2022-01-10 12:36:27,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:27,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 12:36:27,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:27,844 INFO L225 Difference]: With dead ends: 10634 [2022-01-10 12:36:27,845 INFO L226 Difference]: Without dead ends: 6222 [2022-01-10 12:36:27,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:27,851 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 280 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:27,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1033 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:36:27,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2022-01-10 12:36:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 6167. [2022-01-10 12:36:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6167 states, 6162 states have (on average 1.447906523855891) internal successors, (8922), 6166 states have internal predecessors, (8922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6167 states to 6167 states and 8922 transitions. [2022-01-10 12:36:28,447 INFO L78 Accepts]: Start accepts. Automaton has 6167 states and 8922 transitions. Word has length 90 [2022-01-10 12:36:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:28,447 INFO L470 AbstractCegarLoop]: Abstraction has 6167 states and 8922 transitions. [2022-01-10 12:36:28,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 6167 states and 8922 transitions. [2022-01-10 12:36:28,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:36:28,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:28,449 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:28,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:36:28,449 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash -829389627, now seen corresponding path program 1 times [2022-01-10 12:36:28,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:28,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260109969] [2022-01-10 12:36:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:28,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:28,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:28,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260109969] [2022-01-10 12:36:28,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260109969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:28,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:28,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:28,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671612338] [2022-01-10 12:36:28,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:28,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:28,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:28,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:28,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:28,514 INFO L87 Difference]: Start difference. First operand 6167 states and 8922 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:29,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:29,162 INFO L93 Difference]: Finished difference Result 10720 states and 15406 transitions. [2022-01-10 12:36:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:29,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-10 12:36:29,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:29,192 INFO L225 Difference]: With dead ends: 10720 [2022-01-10 12:36:29,192 INFO L226 Difference]: Without dead ends: 4482 [2022-01-10 12:36:29,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:29,199 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 332 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:29,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 534 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:36:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2022-01-10 12:36:29,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 4416. [2022-01-10 12:36:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4416 states, 4411 states have (on average 1.366583541147132) internal successors, (6028), 4415 states have internal predecessors, (6028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 6028 transitions. [2022-01-10 12:36:29,585 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 6028 transitions. Word has length 98 [2022-01-10 12:36:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:29,585 INFO L470 AbstractCegarLoop]: Abstraction has 4416 states and 6028 transitions. [2022-01-10 12:36:29,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 6028 transitions. [2022-01-10 12:36:29,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 12:36:29,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:29,590 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:29,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:36:29,590 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:29,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1978120167, now seen corresponding path program 1 times [2022-01-10 12:36:29,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:29,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108279181] [2022-01-10 12:36:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:29,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 12:36:29,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:29,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108279181] [2022-01-10 12:36:29,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108279181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:29,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:29,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:29,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609097014] [2022-01-10 12:36:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:29,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:29,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:29,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:29,687 INFO L87 Difference]: Start difference. First operand 4416 states and 6028 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:30,050 INFO L93 Difference]: Finished difference Result 7861 states and 10751 transitions. [2022-01-10 12:36:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-10 12:36:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:30,056 INFO L225 Difference]: With dead ends: 7861 [2022-01-10 12:36:30,056 INFO L226 Difference]: Without dead ends: 3477 [2022-01-10 12:36:30,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:30,061 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 257 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:30,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 415 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2022-01-10 12:36:30,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 3173. [2022-01-10 12:36:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 3168 states have (on average 1.3304924242424243) internal successors, (4215), 3172 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 4215 transitions. [2022-01-10 12:36:30,317 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 4215 transitions. Word has length 100 [2022-01-10 12:36:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:30,317 INFO L470 AbstractCegarLoop]: Abstraction has 3173 states and 4215 transitions. [2022-01-10 12:36:30,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 4215 transitions. [2022-01-10 12:36:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 12:36:30,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:30,318 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:30,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:36:30,319 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:30,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:30,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1979133061, now seen corresponding path program 1 times [2022-01-10 12:36:30,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:30,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859250205] [2022-01-10 12:36:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:30,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 12:36:30,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:30,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859250205] [2022-01-10 12:36:30,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859250205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:30,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:30,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:30,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632063845] [2022-01-10 12:36:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:30,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:30,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:30,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:30,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:30,378 INFO L87 Difference]: Start difference. First operand 3173 states and 4215 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:30,586 INFO L93 Difference]: Finished difference Result 6151 states and 8210 transitions. [2022-01-10 12:36:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:30,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-10 12:36:30,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:30,589 INFO L225 Difference]: With dead ends: 6151 [2022-01-10 12:36:30,590 INFO L226 Difference]: Without dead ends: 3167 [2022-01-10 12:36:30,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:30,594 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 327 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:30,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 527 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:30,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2022-01-10 12:36:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 3155. [2022-01-10 12:36:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 3150 states have (on average 1.288888888888889) internal successors, (4060), 3154 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 4060 transitions. [2022-01-10 12:36:30,780 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 4060 transitions. Word has length 100 [2022-01-10 12:36:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:30,780 INFO L470 AbstractCegarLoop]: Abstraction has 3155 states and 4060 transitions. [2022-01-10 12:36:30,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 4060 transitions. [2022-01-10 12:36:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 12:36:30,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:30,781 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:30,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:36:30,781 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:30,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:30,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1192215722, now seen corresponding path program 1 times [2022-01-10 12:36:30,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:30,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17553708] [2022-01-10 12:36:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:30,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 12:36:30,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:30,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17553708] [2022-01-10 12:36:30,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17553708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:30,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:30,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:30,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158952929] [2022-01-10 12:36:30,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:30,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:30,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:30,818 INFO L87 Difference]: Start difference. First operand 3155 states and 4060 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:31,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:31,043 INFO L93 Difference]: Finished difference Result 3173 states and 4074 transitions. [2022-01-10 12:36:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:31,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-01-10 12:36:31,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:31,047 INFO L225 Difference]: With dead ends: 3173 [2022-01-10 12:36:31,047 INFO L226 Difference]: Without dead ends: 3169 [2022-01-10 12:36:31,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:31,048 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 219 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:31,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 678 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2022-01-10 12:36:31,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3155. [2022-01-10 12:36:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 3150 states have (on average 1.2819047619047619) internal successors, (4038), 3154 states have internal predecessors, (4038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 4038 transitions. [2022-01-10 12:36:31,240 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 4038 transitions. Word has length 101 [2022-01-10 12:36:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:31,240 INFO L470 AbstractCegarLoop]: Abstraction has 3155 states and 4038 transitions. [2022-01-10 12:36:31,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 4038 transitions. [2022-01-10 12:36:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 12:36:31,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:31,242 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:31,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:36:31,243 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:31,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash -941056578, now seen corresponding path program 1 times [2022-01-10 12:36:31,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:31,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669463462] [2022-01-10 12:36:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:31,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 12:36:31,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:31,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669463462] [2022-01-10 12:36:31,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669463462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:31,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:31,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:36:31,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936425473] [2022-01-10 12:36:31,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:31,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:36:31,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:31,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:36:31,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:36:31,318 INFO L87 Difference]: Start difference. First operand 3155 states and 4038 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:32,534 INFO L93 Difference]: Finished difference Result 15298 states and 19698 transitions. [2022-01-10 12:36:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:36:32,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-10 12:36:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:32,549 INFO L225 Difference]: With dead ends: 15298 [2022-01-10 12:36:32,549 INFO L226 Difference]: Without dead ends: 12326 [2022-01-10 12:36:32,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:36:32,556 INFO L933 BasicCegarLoop]: 1202 mSDtfsCounter, 2121 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 4073 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:32,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2121 Valid, 4073 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:36:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12326 states. [2022-01-10 12:36:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12326 to 3157. [2022-01-10 12:36:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 3152 states have (on average 1.2791878172588833) internal successors, (4032), 3156 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 4032 transitions. [2022-01-10 12:36:32,935 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 4032 transitions. Word has length 160 [2022-01-10 12:36:32,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:32,936 INFO L470 AbstractCegarLoop]: Abstraction has 3157 states and 4032 transitions. [2022-01-10 12:36:32,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:32,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 4032 transitions. [2022-01-10 12:36:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 12:36:32,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:32,938 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:32,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:36:32,938 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:32,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1346411900, now seen corresponding path program 1 times [2022-01-10 12:36:32,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:32,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332946631] [2022-01-10 12:36:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:32,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 12:36:33,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:33,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332946631] [2022-01-10 12:36:33,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332946631] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:36:33,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532660496] [2022-01-10 12:36:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:33,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:36:33,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:36:33,160 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) [2022-01-10 12:36:33,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:36:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:33,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 12:36:33,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:36:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 12:36:33,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:36:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 12:36:34,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532660496] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:36:34,304 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:36:34,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2022-01-10 12:36:34,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260725342] [2022-01-10 12:36:34,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:36:34,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 12:36:34,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 12:36:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-01-10 12:36:34,306 INFO L87 Difference]: Start difference. First operand 3157 states and 4032 transitions. Second operand has 18 states, 18 states have (on average 18.166666666666668) internal successors, (327), 18 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:38,466 INFO L93 Difference]: Finished difference Result 26839 states and 34710 transitions. [2022-01-10 12:36:38,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-10 12:36:38,467 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 18.166666666666668) internal successors, (327), 18 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-01-10 12:36:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:38,494 INFO L225 Difference]: With dead ends: 26839 [2022-01-10 12:36:38,495 INFO L226 Difference]: Without dead ends: 23887 [2022-01-10 12:36:38,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 355 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1364, Invalid=6646, Unknown=0, NotChecked=0, Total=8010 [2022-01-10 12:36:38,504 INFO L933 BasicCegarLoop]: 2470 mSDtfsCounter, 9945 mSDsluCounter, 15307 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9945 SdHoareTripleChecker+Valid, 17777 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:38,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9945 Valid, 17777 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 12:36:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23887 states. [2022-01-10 12:36:39,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23887 to 4802. [2022-01-10 12:36:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4802 states, 4797 states have (on average 1.293099854075464) internal successors, (6203), 4801 states have internal predecessors, (6203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 6203 transitions. [2022-01-10 12:36:39,106 INFO L78 Accepts]: Start accepts. Automaton has 4802 states and 6203 transitions. Word has length 162 [2022-01-10 12:36:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:39,107 INFO L470 AbstractCegarLoop]: Abstraction has 4802 states and 6203 transitions. [2022-01-10 12:36:39,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.166666666666668) internal successors, (327), 18 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4802 states and 6203 transitions. [2022-01-10 12:36:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-10 12:36:39,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:39,111 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-01-10 12:36:39,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 12:36:39,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-10 12:36:39,331 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:39,331 INFO L85 PathProgramCache]: Analyzing trace with hash 823249827, now seen corresponding path program 1 times [2022-01-10 12:36:39,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:39,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805860852] [2022-01-10 12:36:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:39,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 161 proven. 46 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 12:36:39,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:39,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805860852] [2022-01-10 12:36:39,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805860852] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:36:39,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519689438] [2022-01-10 12:36:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:39,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:36:39,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:36:39,638 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) [2022-01-10 12:36:39,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 12:36:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:39,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 12:36:39,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:36:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 161 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 12:36:40,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:36:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 17 proven. 192 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 12:36:41,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519689438] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:36:41,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:36:41,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 17] total 30 [2022-01-10 12:36:41,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669567684] [2022-01-10 12:36:41,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:36:41,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-10 12:36:41,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:41,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-10 12:36:41,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2022-01-10 12:36:41,249 INFO L87 Difference]: Start difference. First operand 4802 states and 6203 transitions. Second operand has 30 states, 30 states have (on average 18.833333333333332) internal successors, (565), 30 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:52,353 INFO L93 Difference]: Finished difference Result 38856 states and 50030 transitions. [2022-01-10 12:36:52,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-01-10 12:36:52,353 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 18.833333333333332) internal successors, (565), 30 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2022-01-10 12:36:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:52,397 INFO L225 Difference]: With dead ends: 38856 [2022-01-10 12:36:52,398 INFO L226 Difference]: Without dead ends: 34259 [2022-01-10 12:36:52,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 586 SyntacticMatches, 1 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17345 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4068, Invalid=39822, Unknown=0, NotChecked=0, Total=43890 [2022-01-10 12:36:52,417 INFO L933 BasicCegarLoop]: 2772 mSDtfsCounter, 23617 mSDsluCounter, 40562 mSDsCounter, 0 mSdLazyCounter, 4003 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23617 SdHoareTripleChecker+Valid, 43334 SdHoareTripleChecker+Invalid, 4666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 4003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:52,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23617 Valid, 43334 Invalid, 4666 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [663 Valid, 4003 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 12:36:52,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34259 states. [2022-01-10 12:36:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34259 to 6883. [2022-01-10 12:36:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6883 states, 6878 states have (on average 1.2955801104972375) internal successors, (8911), 6882 states have internal predecessors, (8911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 8911 transitions. [2022-01-10 12:36:53,493 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 8911 transitions. Word has length 261 [2022-01-10 12:36:53,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:53,494 INFO L470 AbstractCegarLoop]: Abstraction has 6883 states and 8911 transitions. [2022-01-10 12:36:53,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 18.833333333333332) internal successors, (565), 30 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 8911 transitions. [2022-01-10 12:36:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-01-10 12:36:53,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:53,496 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-01-10 12:36:53,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 12:36:53,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:36:53,712 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:53,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1788282141, now seen corresponding path program 1 times [2022-01-10 12:36:53,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:53,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218763177] [2022-01-10 12:36:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:53,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 101 proven. 105 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 12:36:53,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:53,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218763177] [2022-01-10 12:36:53,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218763177] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:36:53,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978722006] [2022-01-10 12:36:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:53,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:36:53,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:36:53,912 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) [2022-01-10 12:36:53,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 12:36:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:54,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 12:36:54,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:36:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 198 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 12:36:54,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:36:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 154 proven. 48 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 12:36:56,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978722006] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:36:56,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:36:56,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 16] total 29 [2022-01-10 12:36:56,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503882064] [2022-01-10 12:36:56,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:36:56,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-10 12:36:56,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-10 12:36:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2022-01-10 12:36:56,833 INFO L87 Difference]: Start difference. First operand 6883 states and 8911 transitions. Second operand has 29 states, 29 states have (on average 20.344827586206897) internal successors, (590), 29 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:07,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:07,897 INFO L93 Difference]: Finished difference Result 34781 states and 44879 transitions. [2022-01-10 12:37:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-01-10 12:37:07,897 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 20.344827586206897) internal successors, (590), 29 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2022-01-10 12:37:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:07,932 INFO L225 Difference]: With dead ends: 34781 [2022-01-10 12:37:07,932 INFO L226 Difference]: Without dead ends: 28085 [2022-01-10 12:37:07,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 820 GetRequests, 634 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12615 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4414, Invalid=30368, Unknown=0, NotChecked=0, Total=34782 [2022-01-10 12:37:07,946 INFO L933 BasicCegarLoop]: 3033 mSDtfsCounter, 29581 mSDsluCounter, 38108 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 950 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29581 SdHoareTripleChecker+Valid, 41141 SdHoareTripleChecker+Invalid, 4343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 950 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:07,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29581 Valid, 41141 Invalid, 4343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [950 Valid, 3393 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 12:37:07,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28085 states. [2022-01-10 12:37:08,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28085 to 4656. [2022-01-10 12:37:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4656 states, 4651 states have (on average 1.2909051816813588) internal successors, (6004), 4655 states have internal predecessors, (6004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4656 states to 4656 states and 6004 transitions. [2022-01-10 12:37:08,805 INFO L78 Accepts]: Start accepts. Automaton has 4656 states and 6004 transitions. Word has length 262 [2022-01-10 12:37:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:08,805 INFO L470 AbstractCegarLoop]: Abstraction has 4656 states and 6004 transitions. [2022-01-10 12:37:08,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 20.344827586206897) internal successors, (590), 29 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4656 states and 6004 transitions. [2022-01-10 12:37:08,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-01-10 12:37:08,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:08,824 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:08,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 12:37:09,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:09,045 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:09,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2008977595, now seen corresponding path program 1 times [2022-01-10 12:37:09,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:09,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317548807] [2022-01-10 12:37:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:09,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 12:37:09,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317548807] [2022-01-10 12:37:09,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317548807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:09,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:09,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:09,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456875400] [2022-01-10 12:37:09,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:09,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:09,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:09,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:09,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:09,154 INFO L87 Difference]: Start difference. First operand 4656 states and 6004 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:10,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:10,376 INFO L93 Difference]: Finished difference Result 10465 states and 13557 transitions. [2022-01-10 12:37:10,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:10,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2022-01-10 12:37:10,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:10,385 INFO L225 Difference]: With dead ends: 10465 [2022-01-10 12:37:10,385 INFO L226 Difference]: Without dead ends: 6014 [2022-01-10 12:37:10,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:10,391 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 197 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:10,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 665 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:37:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2022-01-10 12:37:11,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 5819. [2022-01-10 12:37:11,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5819 states, 5814 states have (on average 1.261953904368765) internal successors, (7337), 5818 states have internal predecessors, (7337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5819 states to 5819 states and 7337 transitions. [2022-01-10 12:37:11,406 INFO L78 Accepts]: Start accepts. Automaton has 5819 states and 7337 transitions. Word has length 262 [2022-01-10 12:37:11,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:11,407 INFO L470 AbstractCegarLoop]: Abstraction has 5819 states and 7337 transitions. [2022-01-10 12:37:11,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:11,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5819 states and 7337 transitions. [2022-01-10 12:37:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-01-10 12:37:11,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:11,419 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:11,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:37:11,420 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:11,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1678781052, now seen corresponding path program 1 times [2022-01-10 12:37:11,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:11,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027915385] [2022-01-10 12:37:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:11,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 12:37:11,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:11,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027915385] [2022-01-10 12:37:11,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027915385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:11,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:11,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:11,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228594573] [2022-01-10 12:37:11,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:11,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:11,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:11,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:11,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:11,548 INFO L87 Difference]: Start difference. First operand 5819 states and 7337 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:11,969 INFO L93 Difference]: Finished difference Result 6753 states and 8387 transitions. [2022-01-10 12:37:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:11,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2022-01-10 12:37:11,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:11,971 INFO L225 Difference]: With dead ends: 6753 [2022-01-10 12:37:11,971 INFO L226 Difference]: Without dead ends: 1020 [2022-01-10 12:37:11,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:11,979 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 131 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:11,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 395 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:37:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2022-01-10 12:37:12,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1017. [2022-01-10 12:37:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1014 states have (on average 1.0986193293885602) internal successors, (1114), 1016 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1114 transitions. [2022-01-10 12:37:12,145 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1114 transitions. Word has length 263 [2022-01-10 12:37:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:12,146 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 1114 transitions. [2022-01-10 12:37:12,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1114 transitions. [2022-01-10 12:37:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-10 12:37:12,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:12,147 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:12,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:37:12,148 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:12,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:12,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1223913664, now seen corresponding path program 1 times [2022-01-10 12:37:12,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:12,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852621810] [2022-01-10 12:37:12,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:12,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 12:37:12,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:12,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852621810] [2022-01-10 12:37:12,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852621810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:12,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:12,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:37:12,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031447683] [2022-01-10 12:37:12,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:12,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:37:12,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:37:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:37:12,274 INFO L87 Difference]: Start difference. First operand 1017 states and 1114 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:12,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:12,701 INFO L93 Difference]: Finished difference Result 2083 states and 2278 transitions. [2022-01-10 12:37:12,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:37:12,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2022-01-10 12:37:12,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:12,704 INFO L225 Difference]: With dead ends: 2083 [2022-01-10 12:37:12,704 INFO L226 Difference]: Without dead ends: 1764 [2022-01-10 12:37:12,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:37:12,706 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 917 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:12,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 2498 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:37:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-01-10 12:37:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1015. [2022-01-10 12:37:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1012 states have (on average 1.0948616600790513) internal successors, (1108), 1014 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1108 transitions. [2022-01-10 12:37:12,883 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1108 transitions. Word has length 264 [2022-01-10 12:37:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:12,884 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 1108 transitions. [2022-01-10 12:37:12,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1108 transitions. [2022-01-10 12:37:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-01-10 12:37:12,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:12,885 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:12,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:37:12,885 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:12,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash -712424868, now seen corresponding path program 1 times [2022-01-10 12:37:12,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:12,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175482543] [2022-01-10 12:37:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:12,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 12:37:12,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:12,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175482543] [2022-01-10 12:37:12,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175482543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:12,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:12,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:37:12,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121294026] [2022-01-10 12:37:12,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:12,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:37:12,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:37:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:37:12,960 INFO L87 Difference]: Start difference. First operand 1015 states and 1108 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:13,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:13,235 INFO L93 Difference]: Finished difference Result 1596 states and 1744 transitions. [2022-01-10 12:37:13,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:37:13,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2022-01-10 12:37:13,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:13,238 INFO L225 Difference]: With dead ends: 1596 [2022-01-10 12:37:13,238 INFO L226 Difference]: Without dead ends: 1275 [2022-01-10 12:37:13,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:37:13,239 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 443 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:13,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 962 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:13,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-01-10 12:37:13,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 997. [2022-01-10 12:37:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 995 states have (on average 1.0804020100502512) internal successors, (1075), 996 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1075 transitions. [2022-01-10 12:37:13,430 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1075 transitions. Word has length 265 [2022-01-10 12:37:13,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:13,430 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1075 transitions. [2022-01-10 12:37:13,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:13,430 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1075 transitions. [2022-01-10 12:37:13,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-10 12:37:13,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:13,444 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:13,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 12:37:13,445 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1842729745, now seen corresponding path program 1 times [2022-01-10 12:37:13,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:13,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778640770] [2022-01-10 12:37:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:13,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 148 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 12:37:14,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:14,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778640770] [2022-01-10 12:37:14,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778640770] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:14,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584348604] [2022-01-10 12:37:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:14,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:14,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:14,072 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) [2022-01-10 12:37:14,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 12:37:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:14,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 2238 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-10 12:37:14,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:37:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 40 proven. 123 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 12:37:16,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:37:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 148 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 12:37:18,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584348604] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:37:18,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:37:18,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 36 [2022-01-10 12:37:18,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856159256] [2022-01-10 12:37:18,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:37:18,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-10 12:37:18,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:18,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-10 12:37:18,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2022-01-10 12:37:18,007 INFO L87 Difference]: Start difference. First operand 997 states and 1075 transitions. Second operand has 36 states, 36 states have (on average 13.305555555555555) internal successors, (479), 36 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:19,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:19,498 INFO L93 Difference]: Finished difference Result 1368 states and 1482 transitions. [2022-01-10 12:37:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 12:37:19,498 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 13.305555555555555) internal successors, (479), 36 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 324 [2022-01-10 12:37:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:19,500 INFO L225 Difference]: With dead ends: 1368 [2022-01-10 12:37:19,500 INFO L226 Difference]: Without dead ends: 1366 [2022-01-10 12:37:19,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 633 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=463, Invalid=2843, Unknown=0, NotChecked=0, Total=3306 [2022-01-10 12:37:19,502 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 3255 mSDsluCounter, 9231 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3255 SdHoareTripleChecker+Valid, 9661 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:19,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3255 Valid, 9661 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:37:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-01-10 12:37:19,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 997. [2022-01-10 12:37:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 995 states have (on average 1.0793969849246232) internal successors, (1074), 996 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1074 transitions. [2022-01-10 12:37:19,782 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1074 transitions. Word has length 324 [2022-01-10 12:37:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:19,782 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1074 transitions. [2022-01-10 12:37:19,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 13.305555555555555) internal successors, (479), 36 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1074 transitions. [2022-01-10 12:37:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-01-10 12:37:19,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:19,784 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:19,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 12:37:20,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:20,001 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1440032585, now seen corresponding path program 1 times [2022-01-10 12:37:20,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:20,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639125636] [2022-01-10 12:37:20,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:20,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 141 proven. 48 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-01-10 12:37:20,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:20,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639125636] [2022-01-10 12:37:20,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639125636] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:20,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625253638] [2022-01-10 12:37:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:20,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:20,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:20,399 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) [2022-01-10 12:37:20,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 12:37:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:20,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 12:37:20,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:37:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 139 proven. 48 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-01-10 12:37:21,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:37:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 139 proven. 48 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-01-10 12:37:22,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625253638] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:37:22,071 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:37:22,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 20 [2022-01-10 12:37:22,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368405640] [2022-01-10 12:37:22,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:37:22,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 12:37:22,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:22,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 12:37:22,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-01-10 12:37:22,072 INFO L87 Difference]: Start difference. First operand 997 states and 1074 transitions. Second operand has 20 states, 20 states have (on average 26.75) internal successors, (535), 20 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:22,839 INFO L93 Difference]: Finished difference Result 1578 states and 1705 transitions. [2022-01-10 12:37:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 12:37:22,840 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 26.75) internal successors, (535), 20 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-01-10 12:37:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:22,842 INFO L225 Difference]: With dead ends: 1578 [2022-01-10 12:37:22,842 INFO L226 Difference]: Without dead ends: 1576 [2022-01-10 12:37:22,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 742 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=357, Invalid=1203, Unknown=0, NotChecked=0, Total=1560 [2022-01-10 12:37:22,843 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 2409 mSDsluCounter, 5022 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 5609 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:22,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2409 Valid, 5609 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:37:22,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2022-01-10 12:37:23,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 995. [2022-01-10 12:37:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.0774647887323943) internal successors, (1071), 994 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1071 transitions. [2022-01-10 12:37:23,074 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1071 transitions. Word has length 371 [2022-01-10 12:37:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:23,075 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1071 transitions. [2022-01-10 12:37:23,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 26.75) internal successors, (535), 20 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1071 transitions. [2022-01-10 12:37:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-01-10 12:37:23,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:23,082 INFO L514 BasicCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:23,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-10 12:37:23,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-10 12:37:23,301 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:23,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:23,302 INFO L85 PathProgramCache]: Analyzing trace with hash 412731384, now seen corresponding path program 1 times [2022-01-10 12:37:23,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:23,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239082638] [2022-01-10 12:37:23,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:23,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 263 proven. 50 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-01-10 12:37:23,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:23,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239082638] [2022-01-10 12:37:23,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239082638] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:23,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211148348] [2022-01-10 12:37:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:23,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:23,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:23,698 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) [2022-01-10 12:37:23,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 12:37:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:24,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 12:37:24,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:37:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 263 proven. 48 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-01-10 12:37:24,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:37:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 263 proven. 48 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-01-10 12:37:25,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211148348] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:37:25,593 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:37:25,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2022-01-10 12:37:25,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350460684] [2022-01-10 12:37:25,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:37:25,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 12:37:25,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:25,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 12:37:25,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-01-10 12:37:25,595 INFO L87 Difference]: Start difference. First operand 995 states and 1071 transitions. Second operand has 23 states, 23 states have (on average 27.695652173913043) internal successors, (637), 23 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:26,288 INFO L93 Difference]: Finished difference Result 1378 states and 1485 transitions. [2022-01-10 12:37:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 12:37:26,289 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 27.695652173913043) internal successors, (637), 23 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 431 [2022-01-10 12:37:26,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:26,291 INFO L225 Difference]: With dead ends: 1378 [2022-01-10 12:37:26,291 INFO L226 Difference]: Without dead ends: 1276 [2022-01-10 12:37:26,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 860 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=1255, Unknown=0, NotChecked=0, Total=1560 [2022-01-10 12:37:26,292 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 2024 mSDsluCounter, 4784 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:26,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2024 Valid, 5267 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:37:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2022-01-10 12:37:26,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 995. [2022-01-10 12:37:26,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.0754527162977867) internal successors, (1069), 994 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:26,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1069 transitions. [2022-01-10 12:37:26,535 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1069 transitions. Word has length 431 [2022-01-10 12:37:26,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:26,536 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1069 transitions. [2022-01-10 12:37:26,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.695652173913043) internal successors, (637), 23 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:26,536 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1069 transitions. [2022-01-10 12:37:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-01-10 12:37:26,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:26,538 INFO L514 BasicCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:26,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-10 12:37:26,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-10 12:37:26,756 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:26,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:26,756 INFO L85 PathProgramCache]: Analyzing trace with hash -726077558, now seen corresponding path program 1 times [2022-01-10 12:37:26,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:26,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406816936] [2022-01-10 12:37:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:26,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 20 proven. 412 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 12:37:27,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:27,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406816936] [2022-01-10 12:37:27,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406816936] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:27,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422642879] [2022-01-10 12:37:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:27,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:27,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:27,537 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) [2022-01-10 12:37:27,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 12:37:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:27,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 2907 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-10 12:37:27,854 INFO L286 TraceCheckSpWp]: Computing forward predicates...