/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:59:25,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:59:25,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:59:25,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:59:25,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:59:25,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:59:25,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:59:25,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:59:25,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:59:25,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:59:25,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:59:25,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:59:25,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:59:25,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:59:25,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:59:25,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:59:25,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 01:59:25,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:59:25,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:59:25,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:59:25,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:59:25,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:59:25,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:59:25,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:59:25,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:59:25,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:59:25,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:59:25,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:59:25,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:59:25,538 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:59:25,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:59:25,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:59:25,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:59:25,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:59:25,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:59:25,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:59:25,539 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:59:25,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:59:25,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:59:25,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:59:25,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:59:25,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:59:25,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:59:25,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:59:25,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:59:25,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:59:25,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:59:25,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:59:25,540 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:59:25,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:59:25,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:59:25,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:59:25,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:59:25,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:59:25,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:59:25,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:59:25,768 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:59:25,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.06.cil-2.c [2022-01-10 01:59:25,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5893edd7a/ea6b6314c1a447a5b8564610cfcefe66/FLAGb20065db7 [2022-01-10 01:59:26,563 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:59:26,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.06.cil-2.c [2022-01-10 01:59:26,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5893edd7a/ea6b6314c1a447a5b8564610cfcefe66/FLAGb20065db7 [2022-01-10 01:59:26,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5893edd7a/ea6b6314c1a447a5b8564610cfcefe66 [2022-01-10 01:59:26,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:59:26,839 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:59:26,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:59:26,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:59:26,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:59:26,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:59:26" (1/1) ... [2022-01-10 01:59:26,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c24b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:26, skipping insertion in model container [2022-01-10 01:59:26,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:59:26" (1/1) ... [2022-01-10 01:59:26,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:59:26,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:59:28,226 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.06.cil-2.c[381679,381692] [2022-01-10 01:59:28,248 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.06.cil-2.c[383339,383352] [2022-01-10 01:59:28,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:59:28,435 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:59:29,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.06.cil-2.c[381679,381692] [2022-01-10 01:59:29,053 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.06.cil-2.c[383339,383352] [2022-01-10 01:59:29,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:59:29,102 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:59:29,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29 WrapperNode [2022-01-10 01:59:29,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:59:29,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:59:29,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:59:29,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:59:29,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (1/1) ... [2022-01-10 01:59:29,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (1/1) ... [2022-01-10 01:59:29,378 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2022-01-10 01:59:29,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:59:29,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:59:29,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:59:29,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:59:29,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (1/1) ... [2022-01-10 01:59:29,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (1/1) ... [2022-01-10 01:59:29,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (1/1) ... [2022-01-10 01:59:29,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (1/1) ... [2022-01-10 01:59:29,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (1/1) ... [2022-01-10 01:59:29,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (1/1) ... [2022-01-10 01:59:29,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (1/1) ... [2022-01-10 01:59:29,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:59:29,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:59:29,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:59:29,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:59:29,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (1/1) ... [2022-01-10 01:59:29,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:59:29,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:59:29,762 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 01:59:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:59:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 01:59:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 01:59:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 01:59:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 01:59:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 01:59:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 01:59:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 01:59:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 01:59:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 01:59:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 01:59:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 01:59:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 01:59:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:59:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:59:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:59:29,783 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 01:59:29,973 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:59:29,974 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:59:34,715 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:59:34,734 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:59:34,734 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-10 01:59:34,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:59:34 BoogieIcfgContainer [2022-01-10 01:59:34,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:59:34,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:59:34,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:59:34,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:59:34,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:59:26" (1/3) ... [2022-01-10 01:59:34,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2715246d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:59:34, skipping insertion in model container [2022-01-10 01:59:34,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:29" (2/3) ... [2022-01-10 01:59:34,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2715246d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:59:34, skipping insertion in model container [2022-01-10 01:59:34,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:59:34" (3/3) ... [2022-01-10 01:59:34,742 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.06.cil-2.c [2022-01-10 01:59:34,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:59:34,745 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 01:59:34,779 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:59:34,783 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 01:59:34,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 01:59:34,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 01:59:34,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:59:34,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:34,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:34,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:34,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:34,829 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2022-01-10 01:59:34,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:34,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850270995] [2022-01-10 01:59:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:34,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:35,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:59:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:59:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:59:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:59:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:35,151 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 01:59:35,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:35,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850270995] [2022-01-10 01:59:35,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850270995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:35,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:35,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:59:35,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886298543] [2022-01-10 01:59:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:35,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:59:35,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:35,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:59:35,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:59:35,183 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:35,979 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2022-01-10 01:59:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:59:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 01:59:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:35,999 INFO L225 Difference]: With dead ends: 4896 [2022-01-10 01:59:36,000 INFO L226 Difference]: Without dead ends: 2424 [2022-01-10 01:59:36,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:59:36,009 INFO L933 BasicCegarLoop]: 4405 mSDtfsCounter, 582 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 16714 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:36,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 16714 Invalid, 454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 01:59:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-01-10 01:59:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2022-01-10 01:59:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 01:59:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2022-01-10 01:59:36,105 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2022-01-10 01:59:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:59:36,105 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2022-01-10 01:59:36,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2022-01-10 01:59:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:59:36,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:36,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:36,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:59:36,108 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2022-01-10 01:59:36,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:36,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420184891] [2022-01-10 01:59:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:36,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:59:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:59:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:36,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:59:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:59:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:36,241 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 01:59:36,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:36,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420184891] [2022-01-10 01:59:36,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420184891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:36,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:36,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:59:36,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365549536] [2022-01-10 01:59:36,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:36,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:59:36,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:36,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:59:36,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:59:36,244 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:37,750 INFO L93 Difference]: Finished difference Result 2945 states and 5262 transitions. [2022-01-10 01:59:37,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:59:37,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 01:59:37,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:37,762 INFO L225 Difference]: With dead ends: 2945 [2022-01-10 01:59:37,762 INFO L226 Difference]: Without dead ends: 2732 [2022-01-10 01:59:37,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:59:37,767 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 4776 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 21478 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:37,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 21478 Invalid, 1933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 01:59:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-01-10 01:59:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2571. [2022-01-10 01:59:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8177124702144558) internal successors, (4577), 2522 states have internal predecessors, (4577), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-01-10 01:59:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4658 transitions. [2022-01-10 01:59:37,834 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4658 transitions. Word has length 112 [2022-01-10 01:59:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:59:37,835 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 4658 transitions. [2022-01-10 01:59:37,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:37,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4658 transitions. [2022-01-10 01:59:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:59:37,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:37,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:37,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:59:37,841 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:37,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2022-01-10 01:59:37,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:37,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432972022] [2022-01-10 01:59:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:37,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:37,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:59:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:37,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:59:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:37,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:59:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:37,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:59:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:37,966 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 01:59:37,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:37,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432972022] [2022-01-10 01:59:37,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432972022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:37,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:37,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:59:37,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105496956] [2022-01-10 01:59:37,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:37,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:59:37,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:37,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:59:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:59:37,968 INFO L87 Difference]: Start difference. First operand 2571 states and 4658 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:39,614 INFO L93 Difference]: Finished difference Result 3704 states and 6454 transitions. [2022-01-10 01:59:39,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:59:39,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 01:59:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:39,627 INFO L225 Difference]: With dead ends: 3704 [2022-01-10 01:59:39,627 INFO L226 Difference]: Without dead ends: 3270 [2022-01-10 01:59:39,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:59:39,635 INFO L933 BasicCegarLoop]: 4487 mSDtfsCounter, 4800 mSDsluCounter, 16875 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 21362 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:39,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4813 Valid, 21362 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 01:59:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-01-10 01:59:39,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2981. [2022-01-10 01:59:39,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2884 states have (on average 1.782246879334258) internal successors, (5140), 2890 states have internal predecessors, (5140), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2022-01-10 01:59:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 5291 transitions. [2022-01-10 01:59:39,725 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 5291 transitions. Word has length 112 [2022-01-10 01:59:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:59:39,726 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 5291 transitions. [2022-01-10 01:59:39,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 5291 transitions. [2022-01-10 01:59:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:59:39,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:39,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:39,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:59:39,728 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:39,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2022-01-10 01:59:39,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:39,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7691277] [2022-01-10 01:59:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:39,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:59:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:39,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:59:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:59:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:39,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:59:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:39,879 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 01:59:39,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:39,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7691277] [2022-01-10 01:59:39,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7691277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:39,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:39,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:59:39,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162835940] [2022-01-10 01:59:39,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:39,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:59:39,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:59:39,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:59:39,881 INFO L87 Difference]: Start difference. First operand 2981 states and 5291 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:41,444 INFO L93 Difference]: Finished difference Result 5188 states and 8779 transitions. [2022-01-10 01:59:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:59:41,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 01:59:41,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:41,460 INFO L225 Difference]: With dead ends: 5188 [2022-01-10 01:59:41,460 INFO L226 Difference]: Without dead ends: 4344 [2022-01-10 01:59:41,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:59:41,464 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:41,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21469 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 01:59:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2022-01-10 01:59:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 3803. [2022-01-10 01:59:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3618 states have (on average 1.732448866777225) internal successors, (6268), 3628 states have internal predecessors, (6268), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2022-01-10 01:59:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6565 transitions. [2022-01-10 01:59:41,576 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6565 transitions. Word has length 112 [2022-01-10 01:59:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:59:41,577 INFO L470 AbstractCegarLoop]: Abstraction has 3803 states and 6565 transitions. [2022-01-10 01:59:41,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6565 transitions. [2022-01-10 01:59:41,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:59:41,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:41,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:41,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:59:41,584 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:41,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:41,584 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2022-01-10 01:59:41,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:41,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135199373] [2022-01-10 01:59:41,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:41,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:41,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:59:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:59:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:59:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:41,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:59:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:41,675 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 01:59:41,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:41,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135199373] [2022-01-10 01:59:41,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135199373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:41,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:41,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:59:41,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573890737] [2022-01-10 01:59:41,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:41,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:59:41,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:41,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:59:41,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:59:41,678 INFO L87 Difference]: Start difference. First operand 3803 states and 6565 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:43,230 INFO L93 Difference]: Finished difference Result 8154 states and 13443 transitions. [2022-01-10 01:59:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:59:43,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 01:59:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:43,256 INFO L225 Difference]: With dead ends: 8154 [2022-01-10 01:59:43,256 INFO L226 Difference]: Without dead ends: 6488 [2022-01-10 01:59:43,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:59:43,263 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21466 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:43,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21466 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 01:59:43,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2022-01-10 01:59:43,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5453. [2022-01-10 01:59:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 5092 states have (on average 1.6755695208169679) internal successors, (8532), 5110 states have internal predecessors, (8532), 247 states have call successors, (247), 96 states have call predecessors, (247), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2022-01-10 01:59:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 9139 transitions. [2022-01-10 01:59:43,424 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 9139 transitions. Word has length 112 [2022-01-10 01:59:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:59:43,425 INFO L470 AbstractCegarLoop]: Abstraction has 5453 states and 9139 transitions. [2022-01-10 01:59:43,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 9139 transitions. [2022-01-10 01:59:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:59:43,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:43,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:43,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:59:43,428 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:43,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:43,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2022-01-10 01:59:43,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:43,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320445343] [2022-01-10 01:59:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:43,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:43,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:59:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:59:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:59:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:59:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:43,529 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 01:59:43,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:43,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320445343] [2022-01-10 01:59:43,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320445343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:43,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:43,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:59:43,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358567418] [2022-01-10 01:59:43,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:43,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:59:43,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:43,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:59:43,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:59:43,530 INFO L87 Difference]: Start difference. First operand 5453 states and 9139 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:45,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:45,323 INFO L93 Difference]: Finished difference Result 14084 states and 22827 transitions. [2022-01-10 01:59:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:59:45,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 01:59:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:45,379 INFO L225 Difference]: With dead ends: 14084 [2022-01-10 01:59:45,379 INFO L226 Difference]: Without dead ends: 10768 [2022-01-10 01:59:45,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:59:45,396 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21463 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:45,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21463 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 01:59:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10768 states. [2022-01-10 01:59:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10768 to 8767. [2022-01-10 01:59:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 8054 states have (on average 1.6240377452197665) internal successors, (13080), 8088 states have internal predecessors, (13080), 487 states have call successors, (487), 192 states have call predecessors, (487), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2022-01-10 01:59:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 14361 transitions. [2022-01-10 01:59:45,823 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 14361 transitions. Word has length 112 [2022-01-10 01:59:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:59:45,823 INFO L470 AbstractCegarLoop]: Abstraction has 8767 states and 14361 transitions. [2022-01-10 01:59:45,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 14361 transitions. [2022-01-10 01:59:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:59:45,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:45,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:45,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:59:45,829 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2022-01-10 01:59:45,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:45,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627970936] [2022-01-10 01:59:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:45,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:45,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:45,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:59:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:45,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:59:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:45,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:59:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:45,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:59:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:45,926 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 01:59:45,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:45,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627970936] [2022-01-10 01:59:45,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627970936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:45,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:45,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:59:45,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390960004] [2022-01-10 01:59:45,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:45,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:59:45,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:45,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:59:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:59:45,927 INFO L87 Difference]: Start difference. First operand 8767 states and 14361 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:47,819 INFO L93 Difference]: Finished difference Result 25942 states and 41783 transitions. [2022-01-10 01:59:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:59:47,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 01:59:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:47,873 INFO L225 Difference]: With dead ends: 25942 [2022-01-10 01:59:47,873 INFO L226 Difference]: Without dead ends: 19312 [2022-01-10 01:59:47,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:59:47,895 INFO L933 BasicCegarLoop]: 4522 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21460 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:47,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21460 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 01:59:47,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2022-01-10 01:59:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 15425. [2022-01-10 01:59:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15425 states, 14008 states have (on average 1.5862364363221018) internal successors, (22220), 14074 states have internal predecessors, (22220), 967 states have call successors, (967), 384 states have call predecessors, (967), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2022-01-10 01:59:48,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15425 states to 15425 states and 25011 transitions. [2022-01-10 01:59:48,412 INFO L78 Accepts]: Start accepts. Automaton has 15425 states and 25011 transitions. Word has length 112 [2022-01-10 01:59:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:59:48,415 INFO L470 AbstractCegarLoop]: Abstraction has 15425 states and 25011 transitions. [2022-01-10 01:59:48,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:48,415 INFO L276 IsEmpty]: Start isEmpty. Operand 15425 states and 25011 transitions. [2022-01-10 01:59:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:59:48,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:48,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:48,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:59:48,423 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:48,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:48,424 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2022-01-10 01:59:48,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:48,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403546371] [2022-01-10 01:59:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:48,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:48,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:59:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:59:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:48,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:59:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:59:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:48,501 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 01:59:48,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:48,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403546371] [2022-01-10 01:59:48,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403546371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:48,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:48,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:59:48,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38708013] [2022-01-10 01:59:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:48,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:59:48,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:48,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:59:48,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:59:48,503 INFO L87 Difference]: Start difference. First operand 15425 states and 25011 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:51,738 INFO L93 Difference]: Finished difference Result 55608 states and 89253 transitions. [2022-01-10 01:59:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:59:51,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 01:59:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:51,870 INFO L225 Difference]: With dead ends: 55608 [2022-01-10 01:59:51,871 INFO L226 Difference]: Without dead ends: 42320 [2022-01-10 01:59:51,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:59:51,918 INFO L933 BasicCegarLoop]: 4515 mSDtfsCounter, 5030 mSDsluCounter, 16930 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5050 SdHoareTripleChecker+Valid, 21445 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:51,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5050 Valid, 21445 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 01:59:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42320 states. [2022-01-10 01:59:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42320 to 28611. [2022-01-10 01:59:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28611 states, 25850 states have (on average 1.565338491295938) internal successors, (40464), 25980 states have internal predecessors, (40464), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2022-01-10 01:59:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28611 states to 28611 states and 46633 transitions. [2022-01-10 01:59:53,248 INFO L78 Accepts]: Start accepts. Automaton has 28611 states and 46633 transitions. Word has length 112 [2022-01-10 01:59:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:59:53,249 INFO L470 AbstractCegarLoop]: Abstraction has 28611 states and 46633 transitions. [2022-01-10 01:59:53,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 28611 states and 46633 transitions. [2022-01-10 01:59:53,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:59:53,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:53,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:53,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:59:53,268 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2022-01-10 01:59:53,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:53,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49390884] [2022-01-10 01:59:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:53,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:53,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:59:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:53,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:59:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:59:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:59:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:53,350 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 01:59:53,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:53,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49390884] [2022-01-10 01:59:53,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49390884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:53,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:53,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:59:53,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193073789] [2022-01-10 01:59:53,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:53,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:59:53,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:53,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:59:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:59:53,352 INFO L87 Difference]: Start difference. First operand 28611 states and 46633 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:58,255 INFO L93 Difference]: Finished difference Result 105085 states and 171193 transitions. [2022-01-10 01:59:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:59:58,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 01:59:58,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:58,575 INFO L225 Difference]: With dead ends: 105085 [2022-01-10 01:59:58,575 INFO L226 Difference]: Without dead ends: 78611 [2022-01-10 01:59:58,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:59:58,661 INFO L933 BasicCegarLoop]: 4507 mSDtfsCounter, 4964 mSDsluCounter, 16930 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 21437 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:58,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4984 Valid, 21437 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 01:59:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78611 states. [2022-01-10 02:00:01,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78611 to 55045. [2022-01-10 02:00:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55045 states, 49660 states have (on average 1.5559403946838501) internal successors, (77268), 49918 states have internal predecessors, (77268), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2022-01-10 02:00:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55045 states to 55045 states and 91523 transitions. [2022-01-10 02:00:01,514 INFO L78 Accepts]: Start accepts. Automaton has 55045 states and 91523 transitions. Word has length 112 [2022-01-10 02:00:01,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:01,514 INFO L470 AbstractCegarLoop]: Abstraction has 55045 states and 91523 transitions. [2022-01-10 02:00:01,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 55045 states and 91523 transitions. [2022-01-10 02:00:01,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:00:01,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:01,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:01,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:00:01,557 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:01,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:01,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2022-01-10 02:00:01,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:01,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438743644] [2022-01-10 02:00:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:01,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:00:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:00:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:00:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:00:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,639 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 02:00:01,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:01,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438743644] [2022-01-10 02:00:01,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438743644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:01,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:01,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:01,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749601467] [2022-01-10 02:00:01,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:01,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:01,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:01,641 INFO L87 Difference]: Start difference. First operand 55045 states and 91523 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:10,409 INFO L93 Difference]: Finished difference Result 203331 states and 339677 transitions. [2022-01-10 02:00:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:00:10,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:00:10,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:11,057 INFO L225 Difference]: With dead ends: 203331 [2022-01-10 02:00:11,057 INFO L226 Difference]: Without dead ends: 150423 [2022-01-10 02:00:11,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:00:11,220 INFO L933 BasicCegarLoop]: 4472 mSDtfsCounter, 4937 mSDsluCounter, 16870 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4957 SdHoareTripleChecker+Valid, 21342 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:11,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4957 Valid, 21342 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:00:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150423 states. [2022-01-10 02:00:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150423 to 107785. [2022-01-10 02:00:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107785 states, 97280 states have (on average 1.5522615131578947) internal successors, (151004), 97794 states have internal predecessors, (151004), 6919 states have call successors, (6919), 3072 states have call predecessors, (6919), 3584 states have return successors, (27626), 7430 states have call predecessors, (27626), 6919 states have call successors, (27626) [2022-01-10 02:00:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107785 states to 107785 states and 185549 transitions. [2022-01-10 02:00:18,290 INFO L78 Accepts]: Start accepts. Automaton has 107785 states and 185549 transitions. Word has length 112 [2022-01-10 02:00:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:18,290 INFO L470 AbstractCegarLoop]: Abstraction has 107785 states and 185549 transitions. [2022-01-10 02:00:18,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 107785 states and 185549 transitions. [2022-01-10 02:00:18,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:00:18,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:18,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:18,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:00:18,366 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1250939743, now seen corresponding path program 1 times [2022-01-10 02:00:18,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:18,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462606873] [2022-01-10 02:00:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:18,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:00:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:00:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:00:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:00:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,455 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 02:00:18,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:18,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462606873] [2022-01-10 02:00:18,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462606873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:18,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:18,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:18,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732666788] [2022-01-10 02:00:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:18,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:18,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:18,457 INFO L87 Difference]: Start difference. First operand 107785 states and 185549 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)