/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/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:46:50,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:46:50,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:46:50,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 12:46:50,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:46:50,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:46:50,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:46:50,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:46:50,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:46:50,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:46:50,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:46:50,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:46:50,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:46:50,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:46:50,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:46:50,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:46:50,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 12:46:50,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:46:50,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:46:50,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:46:50,551 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 12:46:50,569 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:46:50,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:46:50,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:46:50,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:46:50,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:46:50,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:46:50,570 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:46:50,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:46:50,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:46:50,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:46:50,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:46:50,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:46:50,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:46:50,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:46:50,573 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:46:50,573 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:46:50,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:46:50,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:46:50,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:46:50,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:46:50,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:46:50,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:46:50,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:46:50,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:46:50,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:46:50,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:46:50,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:46:50,575 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:46:50,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:46:50,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:46:50,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:46:50,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:46:50,577 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:46:50,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:46:50,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:46:50,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:46:50,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:46:50,771 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:46:50,775 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:46:50,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2022-01-10 12:46:50,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b775493/2def42e728c4476db9eca6e80014f6bd/FLAG32ee995b9 [2022-01-10 12:46:51,141 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:46:51,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2022-01-10 12:46:51,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b775493/2def42e728c4476db9eca6e80014f6bd/FLAG32ee995b9 [2022-01-10 12:46:51,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b775493/2def42e728c4476db9eca6e80014f6bd [2022-01-10 12:46:51,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:46:51,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:46:51,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:46:51,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:46:51,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:46:51,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360ce33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51, skipping insertion in model container [2022-01-10 12:46:51,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:46:51,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:46:51,768 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2022-01-10 12:46:51,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:46:51,781 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:46:51,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2022-01-10 12:46:51,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:46:51,817 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:46:51,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51 WrapperNode [2022-01-10 12:46:51,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:46:51,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:46:51,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:46:51,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:46:51,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,850 INFO L137 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 260 [2022-01-10 12:46:51,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:46:51,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:46:51,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:46:51,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:46:51,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:46:51,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:46:51,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:46:51,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:46:51,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (1/1) ... [2022-01-10 12:46:51,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:46:51,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:46:51,931 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 12:46:51,938 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 12:46:51,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:46:51,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:46:51,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:46:51,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:46:52,015 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:46:52,016 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:46:52,285 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:46:52,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:46:52,290 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:46:52,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:46:52 BoogieIcfgContainer [2022-01-10 12:46:52,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:46:52,292 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:46:52,292 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:46:52,292 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:46:52,294 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:46:52" (1/1) ... [2022-01-10 12:46:52,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:46:52 BasicIcfg [2022-01-10 12:46:52,637 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:46:52,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:46:52,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:46:52,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:46:52,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:46:51" (1/4) ... [2022-01-10 12:46:52,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326b656e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:46:52, skipping insertion in model container [2022-01-10 12:46:52,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:46:51" (2/4) ... [2022-01-10 12:46:52,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326b656e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:46:52, skipping insertion in model container [2022-01-10 12:46:52,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:46:52" (3/4) ... [2022-01-10 12:46:52,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326b656e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:46:52, skipping insertion in model container [2022-01-10 12:46:52,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:46:52" (4/4) ... [2022-01-10 12:46:52,645 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.cTransformedIcfg [2022-01-10 12:46:52,651 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:46:52,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:46:52,692 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:46:52,697 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 12:46:52,697 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:46:52,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 76 states have internal predecessors, (128), 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 12:46:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 12:46:52,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:46:52,717 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] [2022-01-10 12:46:52,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:46:52,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:46:52,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1162864973, now seen corresponding path program 1 times [2022-01-10 12:46:52,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:46:52,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155473714] [2022-01-10 12:46:52,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:46:52,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:46:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:46:52,919 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 12:46:52,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:46:52,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155473714] [2022-01-10 12:46:52,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155473714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:46:52,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:46:52,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:46:52,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425017624] [2022-01-10 12:46:52,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:46:52,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:46:52,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:46:52,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:46:52,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:46:52,958 INFO L87 Difference]: Start difference. First operand has 77 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 76 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 12:46:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:46:52,982 INFO L93 Difference]: Finished difference Result 126 states and 204 transitions. [2022-01-10 12:46:52,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:46:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2022-01-10 12:46:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:46:52,992 INFO L225 Difference]: With dead ends: 126 [2022-01-10 12:46:52,992 INFO L226 Difference]: Without dead ends: 73 [2022-01-10 12:46:52,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:46:53,000 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:46:53,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:46:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-10 12:46:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-01-10 12:46:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 72 states have internal predecessors, (121), 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 12:46:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 121 transitions. [2022-01-10 12:46:53,033 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 121 transitions. Word has length 29 [2022-01-10 12:46:53,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:46:53,033 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 121 transitions. [2022-01-10 12:46:53,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 12:46:53,034 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 121 transitions. [2022-01-10 12:46:53,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 12:46:53,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:46:53,036 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] [2022-01-10 12:46:53,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:46:53,036 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:46:53,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:46:53,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1229871726, now seen corresponding path program 1 times [2022-01-10 12:46:53,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:46:53,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499766807] [2022-01-10 12:46:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:46:53,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:46:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:46:53,253 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 12:46:53,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:46:53,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499766807] [2022-01-10 12:46:53,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499766807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:46:53,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:46:53,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:46:53,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040113368] [2022-01-10 12:46:53,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:46:53,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:46:53,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:46:53,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:46:53,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:46:53,256 INFO L87 Difference]: Start difference. First operand 73 states and 121 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 12:46:53,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:46:53,342 INFO L93 Difference]: Finished difference Result 165 states and 263 transitions. [2022-01-10 12:46:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:46:53,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2022-01-10 12:46:53,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:46:53,345 INFO L225 Difference]: With dead ends: 165 [2022-01-10 12:46:53,346 INFO L226 Difference]: Without dead ends: 117 [2022-01-10 12:46:53,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:46:53,350 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 71 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:46:53,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 440 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:46:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-01-10 12:46:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 73. [2022-01-10 12:46:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 72 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 12:46:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2022-01-10 12:46:53,363 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 29 [2022-01-10 12:46:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:46:53,363 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2022-01-10 12:46:53,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 12:46:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2022-01-10 12:46:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 12:46:53,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:46:53,364 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] [2022-01-10 12:46:53,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:46:53,364 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:46:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:46:53,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1730105910, now seen corresponding path program 1 times [2022-01-10 12:46:53,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:46:53,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639272769] [2022-01-10 12:46:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:46:53,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:46:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:46:53,493 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 12:46:53,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:46:53,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639272769] [2022-01-10 12:46:53,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639272769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:46:53,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:46:53,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:46:53,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644589297] [2022-01-10 12:46:53,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:46:53,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:46:53,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:46:53,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:46:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:46:53,517 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 12:46:55,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 12:46:55,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:46:55,701 INFO L93 Difference]: Finished difference Result 155 states and 226 transitions. [2022-01-10 12:46:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:46:55,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-01-10 12:46:55,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:46:55,703 INFO L225 Difference]: With dead ends: 155 [2022-01-10 12:46:55,703 INFO L226 Difference]: Without dead ends: 111 [2022-01-10 12:46:55,703 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 12:46:55,704 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 59 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:46:55,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 220 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 12:46:55,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-01-10 12:46:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2022-01-10 12:46:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4351851851851851) internal successors, (155), 108 states have internal predecessors, (155), 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 12:46:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2022-01-10 12:46:55,709 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 51 [2022-01-10 12:46:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:46:55,709 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2022-01-10 12:46:55,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 12:46:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2022-01-10 12:46:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 12:46:55,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:46:55,710 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] [2022-01-10 12:46:55,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:46:55,710 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:46:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:46:55,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1522916203, now seen corresponding path program 1 times [2022-01-10 12:46:55,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:46:55,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514020681] [2022-01-10 12:46:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:46:55,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:46:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:46:55,836 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 12:46:55,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:46:55,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514020681] [2022-01-10 12:46:55,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514020681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:46:55,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:46:55,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:46:55,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966198563] [2022-01-10 12:46:55,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:46:55,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:46:55,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:46:55,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:46:55,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:46:55,839 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 12:46:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:46:55,858 INFO L93 Difference]: Finished difference Result 257 states and 387 transitions. [2022-01-10 12:46:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:46:55,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-01-10 12:46:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:46:55,861 INFO L225 Difference]: With dead ends: 257 [2022-01-10 12:46:55,861 INFO L226 Difference]: Without dead ends: 177 [2022-01-10 12:46:55,862 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 12:46:55,869 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 55 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:46:55,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:46:55,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-10 12:46:55,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2022-01-10 12:46:55,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 174 states have internal predecessors, (258), 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 12:46:55,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 258 transitions. [2022-01-10 12:46:55,880 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 258 transitions. Word has length 51 [2022-01-10 12:46:55,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:46:55,880 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 258 transitions. [2022-01-10 12:46:55,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 12:46:55,880 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 258 transitions. [2022-01-10 12:46:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 12:46:55,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:46:55,881 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] [2022-01-10 12:46:55,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:46:55,881 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:46:55,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:46:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash -421723764, now seen corresponding path program 1 times [2022-01-10 12:46:55,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:46:55,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475209865] [2022-01-10 12:46:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:46:55,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:46:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:46:55,990 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 12:46:55,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:46:55,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475209865] [2022-01-10 12:46:55,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475209865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:46:55,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:46:55,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:46:55,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496625352] [2022-01-10 12:46:55,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:46:55,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:46:55,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:46:55,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:46:55,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:46:55,993 INFO L87 Difference]: Start difference. First operand 175 states and 258 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 12:46:56,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:46:56,010 INFO L93 Difference]: Finished difference Result 443 states and 676 transitions. [2022-01-10 12:46:56,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:46:56,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-01-10 12:46:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:46:56,013 INFO L225 Difference]: With dead ends: 443 [2022-01-10 12:46:56,013 INFO L226 Difference]: Without dead ends: 297 [2022-01-10 12:46:56,015 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 12:46:56,015 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 51 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:46:56,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 218 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:46:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-01-10 12:46:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2022-01-10 12:46:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.5034013605442176) internal successors, (442), 294 states have internal predecessors, (442), 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 12:46:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 442 transitions. [2022-01-10 12:46:56,037 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 442 transitions. Word has length 51 [2022-01-10 12:46:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:46:56,040 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 442 transitions. [2022-01-10 12:46:56,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 12:46:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 442 transitions. [2022-01-10 12:46:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 12:46:56,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:46:56,041 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] [2022-01-10 12:46:56,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:46:56,042 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:46:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:46:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1911971885, now seen corresponding path program 1 times [2022-01-10 12:46:56,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:46:56,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822562914] [2022-01-10 12:46:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:46:56,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:46:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:46:56,325 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 12:46:56,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:46:56,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822562914] [2022-01-10 12:46:56,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822562914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:46:56,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:46:56,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:46:56,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626753173] [2022-01-10 12:46:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:46:56,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:46:56,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:46:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:46:56,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:46:56,327 INFO L87 Difference]: Start difference. First operand 295 states and 442 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 12:46:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:46:57,231 INFO L93 Difference]: Finished difference Result 2423 states and 3746 transitions. [2022-01-10 12:46:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:46:57,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2022-01-10 12:46:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:46:57,239 INFO L225 Difference]: With dead ends: 2423 [2022-01-10 12:46:57,239 INFO L226 Difference]: Without dead ends: 2157 [2022-01-10 12:46:57,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:46:57,241 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 687 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:46:57,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 866 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:46:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2022-01-10 12:46:57,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 559. [2022-01-10 12:46:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.5017921146953406) internal successors, (838), 558 states have internal predecessors, (838), 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 12:46:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 838 transitions. [2022-01-10 12:46:57,330 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 838 transitions. Word has length 51 [2022-01-10 12:46:57,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:46:57,331 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 838 transitions. [2022-01-10 12:46:57,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 12:46:57,331 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 838 transitions. [2022-01-10 12:46:57,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:46:57,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:46:57,332 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] [2022-01-10 12:46:57,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:46:57,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:46:57,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:46:57,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1789705553, now seen corresponding path program 1 times [2022-01-10 12:46:57,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:46:57,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104223288] [2022-01-10 12:46:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:46:57,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:46:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:46:57,429 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 12:46:57,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:46:57,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104223288] [2022-01-10 12:46:57,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104223288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:46:57,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:46:57,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:46:57,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810239480] [2022-01-10 12:46:57,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:46:57,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:46:57,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:46:57,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:46:57,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:46:57,430 INFO L87 Difference]: Start difference. First operand 559 states and 838 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 12:46:59,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 12:47:01,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 12:47:01,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:47:01,857 INFO L93 Difference]: Finished difference Result 1379 states and 2068 transitions. [2022-01-10 12:47:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:47:01,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2022-01-10 12:47:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:47:01,860 INFO L225 Difference]: With dead ends: 1379 [2022-01-10 12:47:01,860 INFO L226 Difference]: Without dead ends: 849 [2022-01-10 12:47:01,861 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 12:47:01,862 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 56 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:47:01,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 238 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 12:47:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-01-10 12:47:01,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 847. [2022-01-10 12:47:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 1.458628841607565) internal successors, (1234), 846 states have internal predecessors, (1234), 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 12:47:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1234 transitions. [2022-01-10 12:47:01,980 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1234 transitions. Word has length 53 [2022-01-10 12:47:01,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:47:01,980 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1234 transitions. [2022-01-10 12:47:01,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 12:47:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1234 transitions. [2022-01-10 12:47:01,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:47:01,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:47:01,983 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] [2022-01-10 12:47:01,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:47:01,984 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:47:01,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:47:01,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1758305839, now seen corresponding path program 1 times [2022-01-10 12:47:01,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:47:01,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928385744] [2022-01-10 12:47:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:47:01,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:47:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:47:02,294 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 12:47:02,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:47:02,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928385744] [2022-01-10 12:47:02,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928385744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:47:02,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:47:02,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:47:02,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035612535] [2022-01-10 12:47:02,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:47:02,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:47:02,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:47:02,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:47:02,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:47:02,296 INFO L87 Difference]: Start difference. First operand 847 states and 1234 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 12:47:03,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:47:03,426 INFO L93 Difference]: Finished difference Result 4127 states and 6058 transitions. [2022-01-10 12:47:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:47:03,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-01-10 12:47:03,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:47:03,437 INFO L225 Difference]: With dead ends: 4127 [2022-01-10 12:47:03,437 INFO L226 Difference]: Without dead ends: 3309 [2022-01-10 12:47:03,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:47:03,439 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 591 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:47:03,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 889 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:47:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2022-01-10 12:47:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 847. [2022-01-10 12:47:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 1.4491725768321513) internal successors, (1226), 846 states have internal predecessors, (1226), 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 12:47:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1226 transitions. [2022-01-10 12:47:03,632 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1226 transitions. Word has length 53 [2022-01-10 12:47:03,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:47:03,632 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1226 transitions. [2022-01-10 12:47:03,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 12:47:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1226 transitions. [2022-01-10 12:47:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:47:03,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:47:03,633 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] [2022-01-10 12:47:03,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:47:03,633 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:47:03,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:47:03,633 INFO L85 PathProgramCache]: Analyzing trace with hash 985122696, now seen corresponding path program 1 times [2022-01-10 12:47:03,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:47:03,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596378488] [2022-01-10 12:47:03,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:47:03,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:47:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:47:03,695 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 12:47:03,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:47:03,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596378488] [2022-01-10 12:47:03,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596378488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:47:03,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:47:03,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:47:03,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351357714] [2022-01-10 12:47:03,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:47:03,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:47:03,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:47:03,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:47:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:47:03,697 INFO L87 Difference]: Start difference. First operand 847 states and 1226 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 12:47:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:47:04,065 INFO L93 Difference]: Finished difference Result 2339 states and 3380 transitions. [2022-01-10 12:47:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:47:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2022-01-10 12:47:04,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:47:04,069 INFO L225 Difference]: With dead ends: 2339 [2022-01-10 12:47:04,069 INFO L226 Difference]: Without dead ends: 1521 [2022-01-10 12:47:04,070 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 12:47:04,072 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 47 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:47:04,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 217 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:47:04,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-01-10 12:47:04,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1519. [2022-01-10 12:47:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 1.4216073781291172) internal successors, (2158), 1518 states have internal predecessors, (2158), 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 12:47:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2158 transitions. [2022-01-10 12:47:04,446 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2158 transitions. Word has length 53 [2022-01-10 12:47:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:47:04,446 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 2158 transitions. [2022-01-10 12:47:04,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 12:47:04,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2158 transitions. [2022-01-10 12:47:04,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 12:47:04,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:47:04,447 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] [2022-01-10 12:47:04,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:47:04,447 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:47:04,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:47:04,447 INFO L85 PathProgramCache]: Analyzing trace with hash 388645069, now seen corresponding path program 1 times [2022-01-10 12:47:04,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:47:04,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539324542] [2022-01-10 12:47:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:47:04,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:47:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:47:04,575 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 12:47:04,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:47:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539324542] [2022-01-10 12:47:04,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539324542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:47:04,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:47:04,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:47:04,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944912127] [2022-01-10 12:47:04,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:47:04,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:47:04,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:47:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:47:04,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:47:04,577 INFO L87 Difference]: Start difference. First operand 1519 states and 2158 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 12:47:06,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 12:47:07,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:47:07,210 INFO L93 Difference]: Finished difference Result 3453 states and 4938 transitions. [2022-01-10 12:47:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:47:07,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2022-01-10 12:47:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:47:07,216 INFO L225 Difference]: With dead ends: 3453 [2022-01-10 12:47:07,216 INFO L226 Difference]: Without dead ends: 1963 [2022-01-10 12:47:07,218 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 12:47:07,218 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 39 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:47:07,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 185 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 12:47:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-01-10 12:47:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1961. [2022-01-10 12:47:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1960 states have (on average 1.420408163265306) internal successors, (2784), 1960 states have internal predecessors, (2784), 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 12:47:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2784 transitions. [2022-01-10 12:47:07,647 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2784 transitions. Word has length 54 [2022-01-10 12:47:07,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:47:07,647 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 2784 transitions. [2022-01-10 12:47:07,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 12:47:07,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2784 transitions. [2022-01-10 12:47:07,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 12:47:07,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:47:07,648 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] [2022-01-10 12:47:07,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:47:07,648 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:47:07,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:47:07,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1299236775, now seen corresponding path program 1 times [2022-01-10 12:47:07,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:47:07,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701511370] [2022-01-10 12:47:07,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:47:07,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:47:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:47:07,749 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 12:47:07,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:47:07,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701511370] [2022-01-10 12:47:07,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701511370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:47:07,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:47:07,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:47:07,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698175671] [2022-01-10 12:47:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:47:07,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:47:07,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:47:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:47:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:47:07,750 INFO L87 Difference]: Start difference. First operand 1961 states and 2784 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 12:47:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:47:08,424 INFO L93 Difference]: Finished difference Result 2672 states and 3808 transitions. [2022-01-10 12:47:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:47:08,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2022-01-10 12:47:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:47:08,431 INFO L225 Difference]: With dead ends: 2672 [2022-01-10 12:47:08,431 INFO L226 Difference]: Without dead ends: 2670 [2022-01-10 12:47:08,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 12:47:08,432 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 231 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:47:08,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 410 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:47:08,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2022-01-10 12:47:08,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2009. [2022-01-10 12:47:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 1.3984063745019921) internal successors, (2808), 2008 states have internal predecessors, (2808), 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 12:47:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2808 transitions. [2022-01-10 12:47:08,879 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2808 transitions. Word has length 54 [2022-01-10 12:47:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:47:08,879 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2808 transitions. [2022-01-10 12:47:08,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 12:47:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2808 transitions. [2022-01-10 12:47:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:47:08,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:47:08,881 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 12:47:08,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:47:08,881 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:47:08,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:47:08,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1001335066, now seen corresponding path program 1 times [2022-01-10 12:47:08,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:47:08,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352365834] [2022-01-10 12:47:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:47:08,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:47:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:47:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:47:08,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:47:08,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352365834] [2022-01-10 12:47:08,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352365834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:47:08,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:47:08,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:47:08,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282764691] [2022-01-10 12:47:08,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:47:08,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:47:08,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:47:08,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:47:08,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:47:08,952 INFO L87 Difference]: Start difference. First operand 2009 states and 2808 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:47:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:47:09,402 INFO L93 Difference]: Finished difference Result 3989 states and 5586 transitions. [2022-01-10 12:47:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:47:09,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 12:47:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:47:09,408 INFO L225 Difference]: With dead ends: 3989 [2022-01-10 12:47:09,408 INFO L226 Difference]: Without dead ends: 2011 [2022-01-10 12:47:09,410 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 12:47:09,410 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 40 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:47:09,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 206 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:47:09,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2022-01-10 12:47:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2009. [2022-01-10 12:47:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 1.3824701195219125) internal successors, (2776), 2008 states have internal predecessors, (2776), 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 12:47:09,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2776 transitions. [2022-01-10 12:47:09,917 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2776 transitions. Word has length 78 [2022-01-10 12:47:09,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:47:09,917 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2776 transitions. [2022-01-10 12:47:09,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:47:09,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2776 transitions. [2022-01-10 12:47:09,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:47:09,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:47:09,918 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] [2022-01-10 12:47:09,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:47:09,918 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:47:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:47:09,919 INFO L85 PathProgramCache]: Analyzing trace with hash 178475513, now seen corresponding path program 1 times [2022-01-10 12:47:09,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:47:09,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425157762] [2022-01-10 12:47:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:47:09,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:47:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:47:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:47:10,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:47:10,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425157762] [2022-01-10 12:47:10,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425157762] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:47:10,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924258341] [2022-01-10 12:47:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:47:10,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:47:10,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:47:10,588 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 12:47:10,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process