/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/array-examples/standard_two_index_02.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:11:23,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:11:23,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:11:23,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 21:11:23,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:11:23,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:11:23,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:11:23,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:11:23,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:11:23,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:11:23,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:11:23,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:11:23,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:11:23,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:11:23,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:11:23,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:11:23,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 21:11:23,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:11:23,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:11:23,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:11:23,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 21:11:23,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:11:23,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:11:23,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:11:23,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:11:23,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:11:23,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:11:23,740 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:11:23,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:11:23,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:11:23,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:11:23,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:11:23,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:11:23,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:11:23,742 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:11:23,742 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:11:23,742 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:11:23,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:11:23,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:11:23,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:11:23,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:11:23,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:11:23,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:11:23,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:11:23,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:11:23,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:11:23,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:11:23,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:11:23,744 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:11:23,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:11:23,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:11:23,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:11:23,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:11:23,746 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:11:23,746 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:11:23,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:11:23,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:11:23,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:11:23,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:11:23,999 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:11:24,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_02.i [2022-01-10 21:11:24,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b508eed/806ac2094784477f84eaebbb5daaec0c/FLAG0eda9e400 [2022-01-10 21:11:24,388 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:11:24,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_02.i [2022-01-10 21:11:24,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b508eed/806ac2094784477f84eaebbb5daaec0c/FLAG0eda9e400 [2022-01-10 21:11:24,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b508eed/806ac2094784477f84eaebbb5daaec0c [2022-01-10 21:11:24,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:11:24,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:11:24,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:11:24,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:11:24,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:11:24,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:11:24" (1/1) ... [2022-01-10 21:11:24,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1efc3cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:24, skipping insertion in model container [2022-01-10 21:11:24,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:11:24" (1/1) ... [2022-01-10 21:11:24,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:11:24,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:11:24,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_02.i[814,827] [2022-01-10 21:11:25,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:11:25,011 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:11:25,024 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_02.i[814,827] [2022-01-10 21:11:25,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:11:25,057 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:11:25,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25 WrapperNode [2022-01-10 21:11:25,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:11:25,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:11:25,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:11:25,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:11:25,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,093 INFO L137 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2022-01-10 21:11:25,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:11:25,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:11:25,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:11:25,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:11:25,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:11:25,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:11:25,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:11:25,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:11:25,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:11:25,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:11:25,164 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 21:11:25,191 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 21:11:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:11:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:11:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 21:11:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 21:11:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:11:25,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:11:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 21:11:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 21:11:25,273 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:11:25,274 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:11:25,403 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:11:25,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:11:25,408 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 21:11:25,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:11:25 BoogieIcfgContainer [2022-01-10 21:11:25,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:11:25,410 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:11:25,410 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:11:25,411 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:11:25,414 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:11:25" (1/1) ... [2022-01-10 21:11:25,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:11:25 BasicIcfg [2022-01-10 21:11:25,504 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:11:25,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:11:25,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:11:25,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:11:25,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:11:24" (1/4) ... [2022-01-10 21:11:25,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a970d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:11:25, skipping insertion in model container [2022-01-10 21:11:25,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:11:25" (2/4) ... [2022-01-10 21:11:25,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a970d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:11:25, skipping insertion in model container [2022-01-10 21:11:25,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:11:25" (3/4) ... [2022-01-10 21:11:25,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a970d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:11:25, skipping insertion in model container [2022-01-10 21:11:25,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:11:25" (4/4) ... [2022-01-10 21:11:25,526 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_two_index_02.iTransformedIcfg [2022-01-10 21:11:25,530 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:11:25,530 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 21:11:25,589 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:11:25,594 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 21:11:25,595 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 21:11:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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 21:11:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 21:11:25,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:11:25,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:11:25,609 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:11:25,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:11:25,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1184970882, now seen corresponding path program 1 times [2022-01-10 21:11:25,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:11:25,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790027514] [2022-01-10 21:11:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:11:25,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:11:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:11:25,779 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 21:11:25,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:11:25,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790027514] [2022-01-10 21:11:25,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790027514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:11:25,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:11:25,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:11:25,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980236521] [2022-01-10 21:11:25,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:11:25,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 21:11:25,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:11:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 21:11:25,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:11:25,816 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 21:11:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:11:25,825 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-01-10 21:11:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 21:11:25,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-01-10 21:11:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:11:25,833 INFO L225 Difference]: With dead ends: 27 [2022-01-10 21:11:25,833 INFO L226 Difference]: Without dead ends: 11 [2022-01-10 21:11:25,835 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 21:11:25,838 INFO L933 BasicCegarLoop]: 17 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, 17 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 21:11:25,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:11:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-01-10 21:11:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-01-10 21:11:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 21:11:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-01-10 21:11:25,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2022-01-10 21:11:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:11:25,864 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-01-10 21:11:25,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 21:11:25,864 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-01-10 21:11:25,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 21:11:25,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:11:25,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:11:25,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:11:25,865 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:11:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:11:25,866 INFO L85 PathProgramCache]: Analyzing trace with hash -296543680, now seen corresponding path program 1 times [2022-01-10 21:11:25,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:11:25,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972920500] [2022-01-10 21:11:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:11:25,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:11:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:11:25,974 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 21:11:25,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:11:25,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972920500] [2022-01-10 21:11:25,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972920500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:11:25,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:11:25,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:11:25,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786299838] [2022-01-10 21:11:25,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:11:25,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:11:25,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:11:25,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:11:25,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:11:25,978 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 21:11:26,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:11:26,027 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-01-10 21:11:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:11:26,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-01-10 21:11:26,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:11:26,029 INFO L225 Difference]: With dead ends: 20 [2022-01-10 21:11:26,029 INFO L226 Difference]: Without dead ends: 12 [2022-01-10 21:11:26,029 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 21:11:26,031 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:11:26,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:11:26,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-10 21:11:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-10 21:11:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 21:11:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-01-10 21:11:26,035 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-01-10 21:11:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:11:26,035 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-01-10 21:11:26,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 21:11:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-01-10 21:11:26,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 21:11:26,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:11:26,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:11:26,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 21:11:26,037 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:11:26,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:11:26,037 INFO L85 PathProgramCache]: Analyzing trace with hash -694313175, now seen corresponding path program 1 times [2022-01-10 21:11:26,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:11:26,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025702739] [2022-01-10 21:11:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:11:26,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:11:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:11:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:11:26,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:11:26,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025702739] [2022-01-10 21:11:26,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025702739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:11:26,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:11:26,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:11:26,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885412561] [2022-01-10 21:11:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:11:26,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:11:26,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:11:26,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:11:26,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:11:26,120 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 21:11:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:11:26,157 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-01-10 21:11:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:11:26,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-01-10 21:11:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:11:26,159 INFO L225 Difference]: With dead ends: 24 [2022-01-10 21:11:26,159 INFO L226 Difference]: Without dead ends: 18 [2022-01-10 21:11:26,159 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 21:11:26,161 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:11:26,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:11:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-10 21:11:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2022-01-10 21:11:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 21:11:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-01-10 21:11:26,165 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-01-10 21:11:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:11:26,165 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-01-10 21:11:26,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 21:11:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-01-10 21:11:26,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 21:11:26,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:11:26,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:11:26,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 21:11:26,166 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:11:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:11:26,167 INFO L85 PathProgramCache]: Analyzing trace with hash -22181152, now seen corresponding path program 1 times [2022-01-10 21:11:26,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:11:26,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779788455] [2022-01-10 21:11:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:11:26,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:11:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:11:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:11:26,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:11:26,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779788455] [2022-01-10 21:11:26,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779788455] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:11:26,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056381850] [2022-01-10 21:11:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:11:26,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:11:26,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:11:26,310 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 21:11:26,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 21:11:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:11:26,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 21:11:26,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:11:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:11:26,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:11:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:11:26,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056381850] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:11:26,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:11:26,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 21:11:26,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359276105] [2022-01-10 21:11:26,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:11:26,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 21:11:26,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:11:26,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 21:11:26,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 21:11:26,715 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 21:11:26,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:11:26,965 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-01-10 21:11:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 21:11:26,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 11 [2022-01-10 21:11:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:11:26,967 INFO L225 Difference]: With dead ends: 36 [2022-01-10 21:11:26,967 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 21:11:26,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 21:11:26,969 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:11:26,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 20 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:11:26,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 21:11:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2022-01-10 21:11:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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 21:11:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 21:11:26,975 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-01-10 21:11:26,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:11:26,975 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 21:11:26,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 21:11:26,975 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 21:11:26,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 21:11:26,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:11:26,976 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:11:27,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 21:11:27,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:11:27,191 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:11:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:11:27,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1475938720, now seen corresponding path program 2 times [2022-01-10 21:11:27,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:11:27,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399267821] [2022-01-10 21:11:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:11:27,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:11:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:11:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 21:11:27,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:11:27,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399267821] [2022-01-10 21:11:27,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399267821] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:11:27,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002501114] [2022-01-10 21:11:27,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 21:11:27,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:11:27,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:11:27,431 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:11:27,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 21:11:27,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 21:11:27,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 21:11:27,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 21:11:27,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:11:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 21:11:27,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:11:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 21:11:27,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002501114] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:11:27,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:11:27,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-10 21:11:27,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542703994] [2022-01-10 21:11:27,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:11:27,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 21:11:27,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:11:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 21:11:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 21:11:27,895 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 21:11:31,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:11:31,088 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-01-10 21:11:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 21:11:31,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 15 [2022-01-10 21:11:31,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:11:31,090 INFO L225 Difference]: With dead ends: 53 [2022-01-10 21:11:31,090 INFO L226 Difference]: Without dead ends: 47 [2022-01-10 21:11:31,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=62, Invalid=93, Unknown=1, NotChecked=0, Total=156 [2022-01-10 21:11:31,091 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 21:11:31,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 47 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 21:11:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-10 21:11:31,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 21. [2022-01-10 21:11:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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 21:11:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-01-10 21:11:31,104 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2022-01-10 21:11:31,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:11:31,104 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-01-10 21:11:31,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 21:11:31,105 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-01-10 21:11:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 21:11:31,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:11:31,106 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:11:31,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 21:11:31,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:11:31,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:11:31,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:11:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1992709152, now seen corresponding path program 3 times [2022-01-10 21:11:31,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:11:31,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541906987] [2022-01-10 21:11:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:11:31,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:11:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:11:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 21:11:31,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:11:31,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541906987] [2022-01-10 21:11:31,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541906987] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:11:31,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521089223] [2022-01-10 21:11:31,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 21:11:31,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:11:31,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:11:31,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:11:31,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 21:11:32,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 21:11:32,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 21:11:32,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 21:11:32,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:11:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 21:11:35,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:11:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 21:11:41,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521089223] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:11:41,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:11:41,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2022-01-10 21:11:41,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151754656] [2022-01-10 21:11:41,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:11:41,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 21:11:41,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:11:41,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 21:11:41,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=190, Unknown=1, NotChecked=0, Total=272 [2022-01-10 21:11:41,980 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 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 21:11:57,970 WARN L228 SmtUtils]: Spent 6.52s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 21:12:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:12:00,823 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2022-01-10 21:12:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 21:12:00,823 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 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 19 [2022-01-10 21:12:00,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:12:00,824 INFO L225 Difference]: With dead ends: 61 [2022-01-10 21:12:00,824 INFO L226 Difference]: Without dead ends: 47 [2022-01-10 21:12:00,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=149, Invalid=312, Unknown=1, NotChecked=0, Total=462 [2022-01-10 21:12:00,826 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-10 21:12:00,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 69 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 108 Invalid, 0 Unknown, 11 Unchecked, 4.6s Time] [2022-01-10 21:12:00,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-10 21:12:00,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2022-01-10 21:12:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:12:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-01-10 21:12:00,838 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 19 [2022-01-10 21:12:00,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:12:00,838 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-01-10 21:12:00,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 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 21:12:00,838 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-01-10 21:12:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 21:12:00,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:12:00,839 INFO L514 BasicCegarLoop]: trace histogram [9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:12:00,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 21:12:01,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:12:01,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:12:01,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:12:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1404405577, now seen corresponding path program 4 times [2022-01-10 21:12:01,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:12:01,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469750243] [2022-01-10 21:12:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:12:01,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:12:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:12:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 21:12:01,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:12:01,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469750243] [2022-01-10 21:12:01,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469750243] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:12:01,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264557892] [2022-01-10 21:12:01,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 21:12:01,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:12:01,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:12:01,308 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:12:01,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 21:12:04,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 21:12:04,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 21:12:04,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-10 21:12:04,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:12:04,243 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 21:12:04,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 40 [2022-01-10 21:12:04,566 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-10 21:12:04,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 21:12:04,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 21:12:04,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 21:12:04,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 21:12:04,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 21:12:04,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 21:12:04,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 21:12:04,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 21:12:04,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 21:12:04,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 21:12:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 21:12:04,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:12:29,494 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 Int) (v_ArrVal_199 Int) (v_ArrVal_197 Int) (v_ArrVal_196 Int)) (let ((.cse0 (let ((.cse1 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 1) 4294967296))) (let ((.cse2 (mod (+ .cse1 1) 4294967296))) (store (store (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* 18446744056529682432 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 2147483648) 2)) (* |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_196) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* (mod (div .cse1 2147483648) 2) 18446744056529682432) (* .cse1 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_197) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* (mod (div .cse2 2147483648) 2) 18446744056529682432) (* .cse2 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_199) (mod (+ (mod (let ((.cse3 (mod (+ .cse2 1) 4294967296))) (+ (* .cse3 4) (* (mod (div .cse3 2147483648) 2) 18446744056529682432))) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt|) 18446744073709551616) v_ArrVal_201))))) (= (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.baseInt| .cse0) |c_ULTIMATE.start_ULTIMATE.start_main_~#b~0#1.baseInt|) (mod (+ 4 |c_ULTIMATE.start_ULTIMATE.start_main_~#b~0#1.offsetInt|) 18446744073709551616)) (select .cse0 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| 18446744073709551616))))) is different from true [2022-01-10 21:12:35,518 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 Int) (v_ArrVal_199 Int) (v_ArrVal_197 Int) (v_ArrVal_196 Int) (v_ArrVal_194 Int)) (let ((.cse0 (let ((.cse1 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 1) 4294967296))) (let ((.cse2 (mod (+ .cse1 1) 4294967296))) (let ((.cse3 (mod (+ .cse2 1) 4294967296))) (store (store (store (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* 18446744056529682432 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 2147483648) 2)) (* |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* (mod (div .cse1 2147483648) 2) 18446744056529682432) (* .cse1 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_196) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* (mod (div .cse2 2147483648) 2) 18446744056529682432) (* .cse2 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_197) (mod (+ (mod (+ (* .cse3 4) (* (mod (div .cse3 2147483648) 2) 18446744056529682432)) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt|) 18446744073709551616) v_ArrVal_199) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (let ((.cse4 (mod (+ .cse3 1) 4294967296))) (+ (* 18446744056529682432 (mod (div .cse4 2147483648) 2)) (* .cse4 4))) 18446744073709551616)) 18446744073709551616) v_ArrVal_201)))))) (= (select .cse0 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| 18446744073709551616)) (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.baseInt| .cse0) |c_ULTIMATE.start_ULTIMATE.start_main_~#b~0#1.baseInt|) (mod (+ 4 |c_ULTIMATE.start_ULTIMATE.start_main_~#b~0#1.offsetInt|) 18446744073709551616))))) is different from true