/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_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.09.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:44:19,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:44:19,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:44:19,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:44:19,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:44:19,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:44:19,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:44:19,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:44:19,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:44:19,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:44:19,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:44:19,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:44:19,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:44:19,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:44:19,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:44:19,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:44:19,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:44:19,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:44:19,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:44:19,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:44:19,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:44:19,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:44:19,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:44:19,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:44:19,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:44:19,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:44:19,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:44:19,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:44:19,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:44:19,174 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:44:19,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:44:19,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:44:19,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:44:19,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:44:19,175 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:44:19,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:44:19,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:44:19,176 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:44:19,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:44:19,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:44:19,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:44:19,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:44:19,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:44:19,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:44:19,177 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:44:19,177 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:44:19,177 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:44:19,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:44:19,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:44:19,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:44:19,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:44:19,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:44:19,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:44:19,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:44:19,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:44:19,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:44:19,178 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:44:19,178 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:44:19,178 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:44:19,178 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:44:19,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:44:19,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:44:19,179 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:44:19,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:44:19,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:44:19,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:44:19,399 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:44:19,401 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:44:19,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.09.cil-1.c [2022-01-10 07:44:19,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d72c561/7cf599423d3d4a618ca72d58831566ab/FLAGcd75befe1 [2022-01-10 07:44:20,298 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:44:20,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.09.cil-1.c [2022-01-10 07:44:20,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d72c561/7cf599423d3d4a618ca72d58831566ab/FLAGcd75befe1 [2022-01-10 07:44:20,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d72c561/7cf599423d3d4a618ca72d58831566ab [2022-01-10 07:44:20,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:44:20,769 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:44:20,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:44:20,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:44:20,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:44:20,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:44:20" (1/1) ... [2022-01-10 07:44:20,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5843b647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:20, skipping insertion in model container [2022-01-10 07:44:20,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:44:20" (1/1) ... [2022-01-10 07:44:20,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:44:20,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:44:22,645 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_label44+token_ring.09.cil-1.c[377340,377353] [2022-01-10 07:44:22,677 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_label44+token_ring.09.cil-1.c[383339,383352] [2022-01-10 07:44:22,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:44:22,965 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:44:23,744 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_label44+token_ring.09.cil-1.c[377340,377353] [2022-01-10 07:44:23,753 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_label44+token_ring.09.cil-1.c[383339,383352] [2022-01-10 07:44:23,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:44:23,832 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:44:23,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23 WrapperNode [2022-01-10 07:44:23,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:44:23,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:44:23,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:44:23,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:44:23,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (1/1) ... [2022-01-10 07:44:23,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (1/1) ... [2022-01-10 07:44:24,219 INFO L137 Inliner]: procedures = 63, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 12989 [2022-01-10 07:44:24,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:44:24,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:44:24,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:44:24,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:44:24,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (1/1) ... [2022-01-10 07:44:24,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (1/1) ... [2022-01-10 07:44:24,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (1/1) ... [2022-01-10 07:44:24,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (1/1) ... [2022-01-10 07:44:24,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (1/1) ... [2022-01-10 07:44:24,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (1/1) ... [2022-01-10 07:44:24,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (1/1) ... [2022-01-10 07:44:24,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:44:24,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:44:24,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:44:24,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:44:24,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (1/1) ... [2022-01-10 07:44:24,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:44:24,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:44:24,877 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 07:44:24,899 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 07:44:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:44:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:44:24,924 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:44:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:44:24,924 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:44:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:44:24,924 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:44:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:44:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:44:24,924 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:44:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:44:24,924 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:44:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:44:24,925 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:44:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:44:24,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:44:25,073 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:44:25,075 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:44:33,034 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:44:33,058 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:44:33,058 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-10 07:44:33,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:44:33 BoogieIcfgContainer [2022-01-10 07:44:33,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:44:33,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:44:33,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:44:33,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:44:33,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:44:20" (1/3) ... [2022-01-10 07:44:33,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b65f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:44:33, skipping insertion in model container [2022-01-10 07:44:33,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:44:23" (2/3) ... [2022-01-10 07:44:33,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b65f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:44:33, skipping insertion in model container [2022-01-10 07:44:33,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:44:33" (3/3) ... [2022-01-10 07:44:33,070 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.09.cil-1.c [2022-01-10 07:44:33,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:44:33,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:44:33,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:44:33,127 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 07:44:33,127 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:44:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-10 07:44:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:33,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:33,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:33,202 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:33,210 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2022-01-10 07:44:33,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:33,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181100996] [2022-01-10 07:44:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:33,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:33,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:33,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:33,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:44:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:33,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:44:33,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:33,816 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 07:44:33,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:33,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:33,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181100996] [2022-01-10 07:44:33,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181100996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:33,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:33,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:44:33,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490154808] [2022-01-10 07:44:33,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:33,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:44:33,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:44:33,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:33,863 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 2 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 07:44:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:34,054 INFO L93 Difference]: Finished difference Result 4972 states and 9157 transitions. [2022-01-10 07:44:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:44:34,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 2 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 145 [2022-01-10 07:44:34,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:34,085 INFO L225 Difference]: With dead ends: 4972 [2022-01-10 07:44:34,086 INFO L226 Difference]: Without dead ends: 2423 [2022-01-10 07:44:34,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:34,101 INFO L933 BasicCegarLoop]: 4497 mSDtfsCounter, 466 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 8519 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:34,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 8519 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2022-01-10 07:44:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2423. [2022-01-10 07:44:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-10 07:44:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2022-01-10 07:44:34,234 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2022-01-10 07:44:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:34,236 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2022-01-10 07:44:34,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 2 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 07:44:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2022-01-10 07:44:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:34,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:34,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:34,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:34,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:34,460 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:34,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:34,461 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2022-01-10 07:44:34,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:34,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770013236] [2022-01-10 07:44:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:34,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:34,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:34,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:34,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:44:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:34,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:34,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:35,077 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 07:44:35,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:35,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:35,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770013236] [2022-01-10 07:44:35,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770013236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:35,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:35,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:35,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776501385] [2022-01-10 07:44:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:35,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:35,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:35,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:35,086 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:35,852 INFO L93 Difference]: Finished difference Result 3029 states and 5389 transitions. [2022-01-10 07:44:35,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:35,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:35,871 INFO L225 Difference]: With dead ends: 3029 [2022-01-10 07:44:35,872 INFO L226 Difference]: Without dead ends: 2744 [2022-01-10 07:44:35,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:35,876 INFO L933 BasicCegarLoop]: 4467 mSDtfsCounter, 4850 mSDsluCounter, 8845 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4867 SdHoareTripleChecker+Valid, 13312 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:35,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4867 Valid, 13312 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 07:44:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2022-01-10 07:44:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2721. [2022-01-10 07:44:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:44:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4899 transitions. [2022-01-10 07:44:35,970 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4899 transitions. Word has length 145 [2022-01-10 07:44:35,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:35,972 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4899 transitions. [2022-01-10 07:44:35,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4899 transitions. [2022-01-10 07:44:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:35,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:35,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:35,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:36,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:36,187 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:36,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2022-01-10 07:44:36,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:36,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442836661] [2022-01-10 07:44:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:36,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:36,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:36,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:36,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:44:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:36,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:36,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:36,603 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 07:44:36,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:36,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:36,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442836661] [2022-01-10 07:44:36,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442836661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:36,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:36,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:36,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100841175] [2022-01-10 07:44:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:36,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:36,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:36,606 INFO L87 Difference]: Start difference. First operand 2721 states and 4899 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:37,033 INFO L93 Difference]: Finished difference Result 3304 states and 5819 transitions. [2022-01-10 07:44:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:37,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:37,050 INFO L225 Difference]: With dead ends: 3304 [2022-01-10 07:44:37,050 INFO L226 Difference]: Without dead ends: 2721 [2022-01-10 07:44:37,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:37,058 INFO L933 BasicCegarLoop]: 4400 mSDtfsCounter, 4589 mSDsluCounter, 8423 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4606 SdHoareTripleChecker+Valid, 12823 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:37,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4606 Valid, 12823 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2022-01-10 07:44:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2721. [2022-01-10 07:44:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.804502814258912) internal successors, (4809), 2668 states have internal predecessors, (4809), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:44:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4892 transitions. [2022-01-10 07:44:37,148 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4892 transitions. Word has length 145 [2022-01-10 07:44:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:37,149 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4892 transitions. [2022-01-10 07:44:37,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4892 transitions. [2022-01-10 07:44:37,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:37,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:37,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:37,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:37,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:37,363 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:37,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:37,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1779729121, now seen corresponding path program 1 times [2022-01-10 07:44:37,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:37,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896451948] [2022-01-10 07:44:37,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:37,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:37,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:37,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:37,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:44:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:37,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:37,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:37,759 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 07:44:37,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:37,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:37,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896451948] [2022-01-10 07:44:37,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896451948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:37,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:37,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:37,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465956717] [2022-01-10 07:44:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:37,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:37,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:37,762 INFO L87 Difference]: Start difference. First operand 2721 states and 4892 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:38,180 INFO L93 Difference]: Finished difference Result 3304 states and 5805 transitions. [2022-01-10 07:44:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:38,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:38,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:38,193 INFO L225 Difference]: With dead ends: 3304 [2022-01-10 07:44:38,193 INFO L226 Difference]: Without dead ends: 2721 [2022-01-10 07:44:38,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:38,197 INFO L933 BasicCegarLoop]: 4397 mSDtfsCounter, 4582 mSDsluCounter, 8419 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 12816 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:38,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4599 Valid, 12816 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2022-01-10 07:44:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2721. [2022-01-10 07:44:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.80187617260788) internal successors, (4802), 2668 states have internal predecessors, (4802), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:44:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4885 transitions. [2022-01-10 07:44:38,286 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4885 transitions. Word has length 145 [2022-01-10 07:44:38,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:38,287 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4885 transitions. [2022-01-10 07:44:38,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4885 transitions. [2022-01-10 07:44:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:38,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:38,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:38,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:38,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:38,501 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:38,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:38,502 INFO L85 PathProgramCache]: Analyzing trace with hash 70462491, now seen corresponding path program 1 times [2022-01-10 07:44:38,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:38,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565155127] [2022-01-10 07:44:38,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:38,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:38,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:38,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:38,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:44:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:38,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:38,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:38,917 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 07:44:38,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:38,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:38,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565155127] [2022-01-10 07:44:38,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565155127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:38,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:38,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:38,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866728554] [2022-01-10 07:44:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:38,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:38,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:38,920 INFO L87 Difference]: Start difference. First operand 2721 states and 4885 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:39,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:39,332 INFO L93 Difference]: Finished difference Result 3304 states and 5791 transitions. [2022-01-10 07:44:39,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:39,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:39,344 INFO L225 Difference]: With dead ends: 3304 [2022-01-10 07:44:39,344 INFO L226 Difference]: Without dead ends: 2721 [2022-01-10 07:44:39,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:39,349 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 4576 mSDsluCounter, 8415 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4593 SdHoareTripleChecker+Valid, 12809 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:39,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4593 Valid, 12809 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:39,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2022-01-10 07:44:39,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2721. [2022-01-10 07:44:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.799249530956848) internal successors, (4795), 2668 states have internal predecessors, (4795), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:44:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4878 transitions. [2022-01-10 07:44:39,426 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4878 transitions. Word has length 145 [2022-01-10 07:44:39,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:39,426 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4878 transitions. [2022-01-10 07:44:39,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4878 transitions. [2022-01-10 07:44:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:39,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:39,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:39,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 07:44:39,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:39,640 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:39,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:39,641 INFO L85 PathProgramCache]: Analyzing trace with hash -285495905, now seen corresponding path program 1 times [2022-01-10 07:44:39,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:39,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514572560] [2022-01-10 07:44:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:39,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:39,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:39,643 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:39,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:44:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:39,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:39,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:40,038 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 07:44:40,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:40,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:40,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514572560] [2022-01-10 07:44:40,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514572560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:40,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:40,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:40,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000517861] [2022-01-10 07:44:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:40,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:40,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:40,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:40,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:40,041 INFO L87 Difference]: Start difference. First operand 2721 states and 4878 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:40,430 INFO L93 Difference]: Finished difference Result 3304 states and 5777 transitions. [2022-01-10 07:44:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:40,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:40,442 INFO L225 Difference]: With dead ends: 3304 [2022-01-10 07:44:40,442 INFO L226 Difference]: Without dead ends: 2721 [2022-01-10 07:44:40,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:40,446 INFO L933 BasicCegarLoop]: 4391 mSDtfsCounter, 4570 mSDsluCounter, 8411 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4587 SdHoareTripleChecker+Valid, 12802 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:40,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4587 Valid, 12802 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2022-01-10 07:44:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2721. [2022-01-10 07:44:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.796622889305816) internal successors, (4788), 2668 states have internal predecessors, (4788), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:44:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4871 transitions. [2022-01-10 07:44:40,519 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4871 transitions. Word has length 145 [2022-01-10 07:44:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:40,519 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4871 transitions. [2022-01-10 07:44:40,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4871 transitions. [2022-01-10 07:44:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:40,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:40,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:40,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:40,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:40,732 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:40,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:40,733 INFO L85 PathProgramCache]: Analyzing trace with hash 672852891, now seen corresponding path program 1 times [2022-01-10 07:44:40,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:40,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4122737] [2022-01-10 07:44:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:40,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:40,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:40,735 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:40,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:44:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:40,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:40,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:41,119 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 07:44:41,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:41,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:41,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4122737] [2022-01-10 07:44:41,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4122737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:41,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:41,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:41,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972388286] [2022-01-10 07:44:41,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:41,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:41,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:41,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:41,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:41,121 INFO L87 Difference]: Start difference. First operand 2721 states and 4871 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:41,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:41,482 INFO L93 Difference]: Finished difference Result 3304 states and 5763 transitions. [2022-01-10 07:44:41,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:41,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:41,497 INFO L225 Difference]: With dead ends: 3304 [2022-01-10 07:44:41,502 INFO L226 Difference]: Without dead ends: 2721 [2022-01-10 07:44:41,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:41,507 INFO L933 BasicCegarLoop]: 4388 mSDtfsCounter, 4564 mSDsluCounter, 8407 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4581 SdHoareTripleChecker+Valid, 12795 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:41,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4581 Valid, 12795 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:41,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2022-01-10 07:44:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2721. [2022-01-10 07:44:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.7939962476547842) internal successors, (4781), 2668 states have internal predecessors, (4781), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:44:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4864 transitions. [2022-01-10 07:44:41,577 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4864 transitions. Word has length 145 [2022-01-10 07:44:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:41,578 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4864 transitions. [2022-01-10 07:44:41,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4864 transitions. [2022-01-10 07:44:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:41,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:41,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:41,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:41,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:41,791 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:41,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:41,792 INFO L85 PathProgramCache]: Analyzing trace with hash -609319395, now seen corresponding path program 1 times [2022-01-10 07:44:41,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:41,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965317769] [2022-01-10 07:44:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:41,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:41,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:41,794 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:41,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:44:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:41,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:41,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:42,154 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 07:44:42,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:42,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:42,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965317769] [2022-01-10 07:44:42,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965317769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:42,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:42,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:42,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708459601] [2022-01-10 07:44:42,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:42,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:42,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:42,156 INFO L87 Difference]: Start difference. First operand 2721 states and 4864 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:42,525 INFO L93 Difference]: Finished difference Result 3304 states and 5749 transitions. [2022-01-10 07:44:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:42,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:42,537 INFO L225 Difference]: With dead ends: 3304 [2022-01-10 07:44:42,537 INFO L226 Difference]: Without dead ends: 2721 [2022-01-10 07:44:42,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:42,541 INFO L933 BasicCegarLoop]: 4385 mSDtfsCounter, 4558 mSDsluCounter, 8403 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4575 SdHoareTripleChecker+Valid, 12788 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:42,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4575 Valid, 12788 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:42,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2022-01-10 07:44:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2721. [2022-01-10 07:44:42,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.7913696060037523) internal successors, (4774), 2668 states have internal predecessors, (4774), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:44:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4857 transitions. [2022-01-10 07:44:42,606 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4857 transitions. Word has length 145 [2022-01-10 07:44:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:42,606 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4857 transitions. [2022-01-10 07:44:42,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4857 transitions. [2022-01-10 07:44:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:42,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:42,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:42,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:42,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:42,822 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:42,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2117931801, now seen corresponding path program 1 times [2022-01-10 07:44:42,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:42,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178101503] [2022-01-10 07:44:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:42,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:42,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:42,825 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:42,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:44:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:42,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:42,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:43,205 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 07:44:43,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:43,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:43,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178101503] [2022-01-10 07:44:43,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178101503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:43,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:43,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:43,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55272702] [2022-01-10 07:44:43,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:43,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:43,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:43,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:43,207 INFO L87 Difference]: Start difference. First operand 2721 states and 4857 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:43,632 INFO L93 Difference]: Finished difference Result 3304 states and 5735 transitions. [2022-01-10 07:44:43,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:43,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:43,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:43,654 INFO L225 Difference]: With dead ends: 3304 [2022-01-10 07:44:43,654 INFO L226 Difference]: Without dead ends: 2721 [2022-01-10 07:44:43,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:43,657 INFO L933 BasicCegarLoop]: 4382 mSDtfsCounter, 4552 mSDsluCounter, 8399 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 12781 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:43,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 12781 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2022-01-10 07:44:43,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2721. [2022-01-10 07:44:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.7887429643527204) internal successors, (4767), 2668 states have internal predecessors, (4767), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:44:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4850 transitions. [2022-01-10 07:44:43,728 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4850 transitions. Word has length 145 [2022-01-10 07:44:43,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:43,728 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4850 transitions. [2022-01-10 07:44:43,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4850 transitions. [2022-01-10 07:44:43,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:43,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:43,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:43,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 07:44:43,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:43,940 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:43,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1097528989, now seen corresponding path program 1 times [2022-01-10 07:44:43,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:43,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582197805] [2022-01-10 07:44:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:43,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:43,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:43,942 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:43,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:44:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:44,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:44,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:44,314 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 07:44:44,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:44,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:44,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582197805] [2022-01-10 07:44:44,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582197805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:44,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:44,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:44,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493303345] [2022-01-10 07:44:44,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:44,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:44,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:44,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:44,316 INFO L87 Difference]: Start difference. First operand 2721 states and 4850 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:44,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:44,645 INFO L93 Difference]: Finished difference Result 3304 states and 5721 transitions. [2022-01-10 07:44:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:44:44,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:44,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:44,654 INFO L225 Difference]: With dead ends: 3304 [2022-01-10 07:44:44,654 INFO L226 Difference]: Without dead ends: 2721 [2022-01-10 07:44:44,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:44,657 INFO L933 BasicCegarLoop]: 4379 mSDtfsCounter, 4546 mSDsluCounter, 8395 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 12774 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:44,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4563 Valid, 12774 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2022-01-10 07:44:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2721. [2022-01-10 07:44:44,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.7861163227016885) internal successors, (4760), 2668 states have internal predecessors, (4760), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:44:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4843 transitions. [2022-01-10 07:44:44,723 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4843 transitions. Word has length 145 [2022-01-10 07:44:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:44,723 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4843 transitions. [2022-01-10 07:44:44,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:44,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4843 transitions. [2022-01-10 07:44:44,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:44,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:44,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:44,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:44,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:44,935 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash 787518105, now seen corresponding path program 1 times [2022-01-10 07:44:44,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:44,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808204857] [2022-01-10 07:44:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:44,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:44,937 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:44,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:44:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:45,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:45,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:45,241 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 07:44:45,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:45,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:45,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808204857] [2022-01-10 07:44:45,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808204857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:45,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:45,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:45,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502020156] [2022-01-10 07:44:45,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:45,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:45,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:45,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:45,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:45,243 INFO L87 Difference]: Start difference. First operand 2721 states and 4843 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:45,674 INFO L93 Difference]: Finished difference Result 3454 states and 5939 transitions. [2022-01-10 07:44:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:45,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:45,683 INFO L225 Difference]: With dead ends: 3454 [2022-01-10 07:44:45,683 INFO L226 Difference]: Without dead ends: 2871 [2022-01-10 07:44:45,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:45,687 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4635 mSDsluCounter, 8390 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 12767 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:45,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4652 Valid, 12767 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:45,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2022-01-10 07:44:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2871. [2022-01-10 07:44:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2871 states, 2809 states have (on average 1.7639729441082235) internal successors, (4955), 2812 states have internal predecessors, (4955), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:44:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2871 states to 2871 states and 5042 transitions. [2022-01-10 07:44:45,760 INFO L78 Accepts]: Start accepts. Automaton has 2871 states and 5042 transitions. Word has length 145 [2022-01-10 07:44:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:45,761 INFO L470 AbstractCegarLoop]: Abstraction has 2871 states and 5042 transitions. [2022-01-10 07:44:45,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2871 states and 5042 transitions. [2022-01-10 07:44:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:45,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:45,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:45,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 07:44:45,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:45,976 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2015036011, now seen corresponding path program 1 times [2022-01-10 07:44:45,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:45,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391550678] [2022-01-10 07:44:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:45,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:45,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:45,978 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:45,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:44:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:46,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:46,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:46,310 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 07:44:46,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:46,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:46,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391550678] [2022-01-10 07:44:46,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391550678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:46,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:46,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:46,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847833719] [2022-01-10 07:44:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:46,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:46,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:46,311 INFO L87 Difference]: Start difference. First operand 2871 states and 5042 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:46,745 INFO L93 Difference]: Finished difference Result 3754 states and 6337 transitions. [2022-01-10 07:44:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:46,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:46,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:46,753 INFO L225 Difference]: With dead ends: 3754 [2022-01-10 07:44:46,753 INFO L226 Difference]: Without dead ends: 3021 [2022-01-10 07:44:46,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:46,757 INFO L933 BasicCegarLoop]: 4372 mSDtfsCounter, 4629 mSDsluCounter, 8386 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4646 SdHoareTripleChecker+Valid, 12758 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:46,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4646 Valid, 12758 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:44:46,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-01-10 07:44:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3021. [2022-01-10 07:44:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3021 states, 2953 states have (on average 1.7426346088723332) internal successors, (5146), 2956 states have internal predecessors, (5146), 45 states have call successors, (45), 20 states have call predecessors, (45), 21 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:44:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3021 states to 3021 states and 5237 transitions. [2022-01-10 07:44:46,839 INFO L78 Accepts]: Start accepts. Automaton has 3021 states and 5237 transitions. Word has length 145 [2022-01-10 07:44:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:46,840 INFO L470 AbstractCegarLoop]: Abstraction has 3021 states and 5237 transitions. [2022-01-10 07:44:46,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3021 states and 5237 transitions. [2022-01-10 07:44:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:46,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:46,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:46,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:47,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:47,053 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:47,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:47,053 INFO L85 PathProgramCache]: Analyzing trace with hash 248655706, now seen corresponding path program 1 times [2022-01-10 07:44:47,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:47,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202365222] [2022-01-10 07:44:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:47,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:47,055 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:47,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:44:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:47,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:47,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:47,450 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 07:44:47,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:47,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:47,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202365222] [2022-01-10 07:44:47,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202365222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:47,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:47,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:47,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841697902] [2022-01-10 07:44:47,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:47,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:47,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:47,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:47,452 INFO L87 Difference]: Start difference. First operand 3021 states and 5237 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:47,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:47,898 INFO L93 Difference]: Finished difference Result 4054 states and 6727 transitions. [2022-01-10 07:44:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:47,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:47,908 INFO L225 Difference]: With dead ends: 4054 [2022-01-10 07:44:47,909 INFO L226 Difference]: Without dead ends: 3171 [2022-01-10 07:44:47,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:47,913 INFO L933 BasicCegarLoop]: 4369 mSDtfsCounter, 4622 mSDsluCounter, 8382 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 12751 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:47,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4639 Valid, 12751 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:44:47,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-01-10 07:44:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3171. [2022-01-10 07:44:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 3097 states have (on average 1.7219890216338392) internal successors, (5333), 3100 states have internal predecessors, (5333), 47 states have call successors, (47), 24 states have call predecessors, (47), 25 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:44:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 5428 transitions. [2022-01-10 07:44:47,995 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 5428 transitions. Word has length 145 [2022-01-10 07:44:47,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:47,995 INFO L470 AbstractCegarLoop]: Abstraction has 3171 states and 5428 transitions. [2022-01-10 07:44:47,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:47,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 5428 transitions. [2022-01-10 07:44:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:47,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:47,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:48,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 07:44:48,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:48,207 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:48,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:48,207 INFO L85 PathProgramCache]: Analyzing trace with hash -618096041, now seen corresponding path program 1 times [2022-01-10 07:44:48,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:48,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669061923] [2022-01-10 07:44:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:48,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:48,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:48,209 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:48,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:44:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:48,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:48,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:48,559 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 07:44:48,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:48,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:48,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669061923] [2022-01-10 07:44:48,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669061923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:48,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:48,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:48,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192447266] [2022-01-10 07:44:48,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:48,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:48,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:48,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:48,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:48,562 INFO L87 Difference]: Start difference. First operand 3171 states and 5428 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:48,996 INFO L93 Difference]: Finished difference Result 4354 states and 7109 transitions. [2022-01-10 07:44:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:48,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:49,004 INFO L225 Difference]: With dead ends: 4354 [2022-01-10 07:44:49,004 INFO L226 Difference]: Without dead ends: 3321 [2022-01-10 07:44:49,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:49,009 INFO L933 BasicCegarLoop]: 4366 mSDtfsCounter, 4615 mSDsluCounter, 8378 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4632 SdHoareTripleChecker+Valid, 12744 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:49,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4632 Valid, 12744 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:44:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2022-01-10 07:44:49,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 3321. [2022-01-10 07:44:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3241 states have (on average 1.7019438444924406) internal successors, (5516), 3244 states have internal predecessors, (5516), 49 states have call successors, (49), 28 states have call predecessors, (49), 29 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:44:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 5615 transitions. [2022-01-10 07:44:49,087 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 5615 transitions. Word has length 145 [2022-01-10 07:44:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:49,087 INFO L470 AbstractCegarLoop]: Abstraction has 3321 states and 5615 transitions. [2022-01-10 07:44:49,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 5615 transitions. [2022-01-10 07:44:49,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:49,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:49,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:49,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:49,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:49,299 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2029508313, now seen corresponding path program 1 times [2022-01-10 07:44:49,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277626072] [2022-01-10 07:44:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:49,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:49,302 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:49,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:44:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:49,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:49,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:49,664 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 07:44:49,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:49,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:49,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277626072] [2022-01-10 07:44:49,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277626072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:49,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:49,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:49,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246441059] [2022-01-10 07:44:49,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:49,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:49,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:49,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:49,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:49,666 INFO L87 Difference]: Start difference. First operand 3321 states and 5615 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:50,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:50,260 INFO L93 Difference]: Finished difference Result 4654 states and 7483 transitions. [2022-01-10 07:44:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:50,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:50,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:50,270 INFO L225 Difference]: With dead ends: 4654 [2022-01-10 07:44:50,270 INFO L226 Difference]: Without dead ends: 3471 [2022-01-10 07:44:50,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:50,278 INFO L933 BasicCegarLoop]: 4363 mSDtfsCounter, 4608 mSDsluCounter, 8374 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4625 SdHoareTripleChecker+Valid, 12737 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:50,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4625 Valid, 12737 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:44:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2022-01-10 07:44:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 3471. [2022-01-10 07:44:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3471 states, 3385 states have (on average 1.6824224519940916) internal successors, (5695), 3388 states have internal predecessors, (5695), 51 states have call successors, (51), 32 states have call predecessors, (51), 33 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:44:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 5798 transitions. [2022-01-10 07:44:50,376 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 5798 transitions. Word has length 145 [2022-01-10 07:44:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:50,377 INFO L470 AbstractCegarLoop]: Abstraction has 3471 states and 5798 transitions. [2022-01-10 07:44:50,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 5798 transitions. [2022-01-10 07:44:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:50,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:50,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:50,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:50,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:50,589 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:50,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2103790166, now seen corresponding path program 1 times [2022-01-10 07:44:50,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:50,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584121040] [2022-01-10 07:44:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:50,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:50,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:50,591 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:50,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:44:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:50,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:50,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:50,896 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 07:44:50,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:50,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:50,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584121040] [2022-01-10 07:44:50,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584121040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:50,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:50,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:50,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70315142] [2022-01-10 07:44:50,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:50,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:50,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:50,898 INFO L87 Difference]: Start difference. First operand 3471 states and 5798 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:51,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:51,393 INFO L93 Difference]: Finished difference Result 4954 states and 7849 transitions. [2022-01-10 07:44:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:51,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:51,402 INFO L225 Difference]: With dead ends: 4954 [2022-01-10 07:44:51,402 INFO L226 Difference]: Without dead ends: 3621 [2022-01-10 07:44:51,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:51,408 INFO L933 BasicCegarLoop]: 4360 mSDtfsCounter, 4601 mSDsluCounter, 8370 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4618 SdHoareTripleChecker+Valid, 12730 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:51,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4618 Valid, 12730 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:44:51,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2022-01-10 07:44:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3621. [2022-01-10 07:44:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3529 states have (on average 1.6633607254179654) internal successors, (5870), 3532 states have internal predecessors, (5870), 53 states have call successors, (53), 36 states have call predecessors, (53), 37 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 07:44:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5977 transitions. [2022-01-10 07:44:51,513 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5977 transitions. Word has length 145 [2022-01-10 07:44:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:51,514 INFO L470 AbstractCegarLoop]: Abstraction has 3621 states and 5977 transitions. [2022-01-10 07:44:51,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5977 transitions. [2022-01-10 07:44:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:51,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:51,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:51,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:51,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:51,725 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:51,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash -740232742, now seen corresponding path program 1 times [2022-01-10 07:44:51,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:51,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629158566] [2022-01-10 07:44:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:51,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:51,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:51,727 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:51,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:44:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:51,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:51,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:52,052 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 07:44:52,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:52,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:52,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629158566] [2022-01-10 07:44:52,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629158566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:52,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:52,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:52,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314667436] [2022-01-10 07:44:52,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:52,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:52,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:52,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:52,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:52,054 INFO L87 Difference]: Start difference. First operand 3621 states and 5977 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:52,532 INFO L93 Difference]: Finished difference Result 5254 states and 8207 transitions. [2022-01-10 07:44:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:52,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:52,543 INFO L225 Difference]: With dead ends: 5254 [2022-01-10 07:44:52,544 INFO L226 Difference]: Without dead ends: 3771 [2022-01-10 07:44:52,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:52,550 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 4594 mSDsluCounter, 8366 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 12723 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:52,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4611 Valid, 12723 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:44:52,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2022-01-10 07:44:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3771. [2022-01-10 07:44:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 3673 states have (on average 1.6447046011434794) internal successors, (6041), 3676 states have internal predecessors, (6041), 55 states have call successors, (55), 40 states have call predecessors, (55), 41 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 07:44:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 6152 transitions. [2022-01-10 07:44:52,671 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 6152 transitions. Word has length 145 [2022-01-10 07:44:52,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:52,671 INFO L470 AbstractCegarLoop]: Abstraction has 3771 states and 6152 transitions. [2022-01-10 07:44:52,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:52,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 6152 transitions. [2022-01-10 07:44:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:52,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:52,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:52,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:52,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:52,883 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:52,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash 769093079, now seen corresponding path program 1 times [2022-01-10 07:44:52,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:52,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144376703] [2022-01-10 07:44:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:52,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:52,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:52,885 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:52,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:44:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:52,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:52,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:53,187 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 07:44:53,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:53,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:53,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144376703] [2022-01-10 07:44:53,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144376703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:53,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:53,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:44:53,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530190527] [2022-01-10 07:44:53,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:53,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:53,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:53,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:53,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:53,189 INFO L87 Difference]: Start difference. First operand 3771 states and 6152 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:53,674 INFO L93 Difference]: Finished difference Result 5554 states and 8557 transitions. [2022-01-10 07:44:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:44:53,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 07:44:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:53,683 INFO L225 Difference]: With dead ends: 5554 [2022-01-10 07:44:53,683 INFO L226 Difference]: Without dead ends: 3921 [2022-01-10 07:44:53,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:44:53,687 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4586 mSDsluCounter, 8362 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4603 SdHoareTripleChecker+Valid, 12716 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:53,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4603 Valid, 12716 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:44:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2022-01-10 07:44:53,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 3921. [2022-01-10 07:44:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3817 states have (on average 1.6264081739586063) internal successors, (6208), 3820 states have internal predecessors, (6208), 57 states have call successors, (57), 44 states have call predecessors, (57), 45 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 07:44:53,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 6323 transitions. [2022-01-10 07:44:53,892 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 6323 transitions. Word has length 145 [2022-01-10 07:44:53,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:53,893 INFO L470 AbstractCegarLoop]: Abstraction has 3921 states and 6323 transitions. [2022-01-10 07:44:53,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:44:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 6323 transitions. [2022-01-10 07:44:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:44:53,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:53,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:53,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:54,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:54,105 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1729688148, now seen corresponding path program 1 times [2022-01-10 07:44:54,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:54,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55573390] [2022-01-10 07:44:54,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:54,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:54,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:54,107 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:54,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:44:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:54,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:44:54,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:54,451 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 07:44:54,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:54,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55573390] [2022-01-10 07:44:54,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55573390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:54,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:54,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:44:54,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368099984] [2022-01-10 07:44:54,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:54,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:44:54,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:44:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:54,454 INFO L87 Difference]: Start difference. First operand 3921 states and 6323 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 2 states have call successors, (5), 2 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 07:44:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:54,640 INFO L93 Difference]: Finished difference Result 7458 states and 10986 transitions. [2022-01-10 07:44:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:44:54,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 2 states have call successors, (5), 2 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 145 [2022-01-10 07:44:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:54,655 INFO L225 Difference]: With dead ends: 7458 [2022-01-10 07:44:54,655 INFO L226 Difference]: Without dead ends: 5676 [2022-01-10 07:44:54,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:44:54,663 INFO L933 BasicCegarLoop]: 4446 mSDtfsCounter, 4326 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 4830 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:54,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 4830 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2022-01-10 07:44:54,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5674. [2022-01-10 07:44:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5674 states, 5472 states have (on average 1.5286915204678362) internal successors, (8365), 5478 states have internal predecessors, (8365), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:44:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5674 states to 5674 states and 8587 transitions. [2022-01-10 07:44:54,884 INFO L78 Accepts]: Start accepts. Automaton has 5674 states and 8587 transitions. Word has length 145 [2022-01-10 07:44:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:54,884 INFO L470 AbstractCegarLoop]: Abstraction has 5674 states and 8587 transitions. [2022-01-10 07:44:54,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 2 states have call successors, (5), 2 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 07:44:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5674 states and 8587 transitions. [2022-01-10 07:44:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:44:54,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:54,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:54,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:55,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:55,100 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash -43020965, now seen corresponding path program 1 times [2022-01-10 07:44:55,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:55,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450529330] [2022-01-10 07:44:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:55,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:55,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:55,102 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:55,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:44:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:55,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:55,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 07:44:55,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:55,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:55,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450529330] [2022-01-10 07:44:55,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450529330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:55,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:55,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:55,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923828795] [2022-01-10 07:44:55,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:55,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:55,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:55,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:55,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:55,532 INFO L87 Difference]: Start difference. First operand 5674 states and 8587 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:44:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:55,929 INFO L93 Difference]: Finished difference Result 11603 states and 16403 transitions. [2022-01-10 07:44:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:55,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:44:55,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:55,956 INFO L225 Difference]: With dead ends: 11603 [2022-01-10 07:44:55,957 INFO L226 Difference]: Without dead ends: 8068 [2022-01-10 07:44:55,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:44:55,971 INFO L933 BasicCegarLoop]: 4382 mSDtfsCounter, 370 mSDsluCounter, 13325 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 17707 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:55,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 17707 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:55,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8068 states. [2022-01-10 07:44:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8068 to 5728. [2022-01-10 07:44:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5728 states, 5526 states have (on average 1.5202678248280854) internal successors, (8401), 5532 states have internal predecessors, (8401), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:44:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5728 states to 5728 states and 8623 transitions. [2022-01-10 07:44:56,314 INFO L78 Accepts]: Start accepts. Automaton has 5728 states and 8623 transitions. Word has length 236 [2022-01-10 07:44:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:56,314 INFO L470 AbstractCegarLoop]: Abstraction has 5728 states and 8623 transitions. [2022-01-10 07:44:56,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:44:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5728 states and 8623 transitions. [2022-01-10 07:44:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:44:56,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:56,318 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:56,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:56,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:56,529 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:56,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash -240771301, now seen corresponding path program 1 times [2022-01-10 07:44:56,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:56,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078242635] [2022-01-10 07:44:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:56,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:56,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:56,531 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:56,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:44:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:56,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:56,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 07:44:56,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:56,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:56,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078242635] [2022-01-10 07:44:56,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078242635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:56,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:56,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:56,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772432057] [2022-01-10 07:44:56,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:56,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:56,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:56,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:56,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:56,961 INFO L87 Difference]: Start difference. First operand 5728 states and 8623 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:44:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:57,254 INFO L93 Difference]: Finished difference Result 9793 states and 13957 transitions. [2022-01-10 07:44:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:57,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:44:57,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:57,270 INFO L225 Difference]: With dead ends: 9793 [2022-01-10 07:44:57,270 INFO L226 Difference]: Without dead ends: 6204 [2022-01-10 07:44:57,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:44:57,282 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 323 mSDsluCounter, 13258 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 17636 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:57,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 17636 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:57,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6204 states. [2022-01-10 07:44:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6204 to 5740. [2022-01-10 07:44:57,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5740 states, 5538 states have (on average 1.5133622246298302) internal successors, (8381), 5544 states have internal predecessors, (8381), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:44:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5740 states to 5740 states and 8603 transitions. [2022-01-10 07:44:57,571 INFO L78 Accepts]: Start accepts. Automaton has 5740 states and 8603 transitions. Word has length 236 [2022-01-10 07:44:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:57,571 INFO L470 AbstractCegarLoop]: Abstraction has 5740 states and 8603 transitions. [2022-01-10 07:44:57,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:44:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5740 states and 8603 transitions. [2022-01-10 07:44:57,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:44:57,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:57,578 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:57,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:57,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:57,790 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1348665125, now seen corresponding path program 1 times [2022-01-10 07:44:57,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:57,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416062421] [2022-01-10 07:44:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:57,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:57,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:57,792 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:57,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:44:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:57,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:57,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 07:44:58,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:58,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:58,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416062421] [2022-01-10 07:44:58,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416062421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:58,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:58,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:58,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545667921] [2022-01-10 07:44:58,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:58,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:58,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:58,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:58,252 INFO L87 Difference]: Start difference. First operand 5740 states and 8603 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:44:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:58,610 INFO L93 Difference]: Finished difference Result 9761 states and 13845 transitions. [2022-01-10 07:44:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:58,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:44:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:58,621 INFO L225 Difference]: With dead ends: 9761 [2022-01-10 07:44:58,621 INFO L226 Difference]: Without dead ends: 6160 [2022-01-10 07:44:58,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:44:58,628 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 284 mSDsluCounter, 13243 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 17621 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:44:58,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 17621 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:44:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2022-01-10 07:44:58,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 5752. [2022-01-10 07:44:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5752 states, 5550 states have (on average 1.5064864864864864) internal successors, (8361), 5556 states have internal predecessors, (8361), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:44:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5752 states to 5752 states and 8583 transitions. [2022-01-10 07:44:58,989 INFO L78 Accepts]: Start accepts. Automaton has 5752 states and 8583 transitions. Word has length 236 [2022-01-10 07:44:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:44:58,990 INFO L470 AbstractCegarLoop]: Abstraction has 5752 states and 8583 transitions. [2022-01-10 07:44:58,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:44:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5752 states and 8583 transitions. [2022-01-10 07:44:58,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:44:58,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:44:58,994 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:44:59,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:44:59,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:44:59,206 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:44:59,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:44:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1641034395, now seen corresponding path program 1 times [2022-01-10 07:44:59,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:44:59,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189133370] [2022-01-10 07:44:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:44:59,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:44:59,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:44:59,208 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:44:59,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:44:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:44:59,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:44:59,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:44:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:44:59,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:44:59,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:44:59,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189133370] [2022-01-10 07:44:59,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189133370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:44:59,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:44:59,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:44:59,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978108757] [2022-01-10 07:44:59,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:44:59,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:44:59,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:44:59,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:44:59,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:44:59,684 INFO L87 Difference]: Start difference. First operand 5752 states and 8583 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:44:59,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:44:59,984 INFO L93 Difference]: Finished difference Result 9729 states and 13733 transitions. [2022-01-10 07:44:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:44:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:44:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:44:59,996 INFO L225 Difference]: With dead ends: 9729 [2022-01-10 07:44:59,996 INFO L226 Difference]: Without dead ends: 6116 [2022-01-10 07:45:00,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:00,006 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 245 mSDsluCounter, 13228 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 17606 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:00,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 17606 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:00,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6116 states. [2022-01-10 07:45:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6116 to 5764. [2022-01-10 07:45:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5764 states, 5562 states have (on average 1.4996404171161453) internal successors, (8341), 5568 states have internal predecessors, (8341), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:45:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5764 states to 5764 states and 8563 transitions. [2022-01-10 07:45:00,321 INFO L78 Accepts]: Start accepts. Automaton has 5764 states and 8563 transitions. Word has length 236 [2022-01-10 07:45:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:00,321 INFO L470 AbstractCegarLoop]: Abstraction has 5764 states and 8563 transitions. [2022-01-10 07:45:00,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:00,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5764 states and 8563 transitions. [2022-01-10 07:45:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:45:00,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:00,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:00,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:00,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:00,539 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:00,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1078217637, now seen corresponding path program 1 times [2022-01-10 07:45:00,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:00,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829559151] [2022-01-10 07:45:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:00,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:00,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:00,541 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:00,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:45:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:00,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:00,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:45:00,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:00,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:00,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829559151] [2022-01-10 07:45:00,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829559151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:00,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:00,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:45:00,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763762617] [2022-01-10 07:45:00,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:00,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:00,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:00,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:00,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:00,956 INFO L87 Difference]: Start difference. First operand 5764 states and 8563 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:01,244 INFO L93 Difference]: Finished difference Result 9641 states and 13549 transitions. [2022-01-10 07:45:01,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:01,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:45:01,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:01,255 INFO L225 Difference]: With dead ends: 9641 [2022-01-10 07:45:01,255 INFO L226 Difference]: Without dead ends: 6016 [2022-01-10 07:45:01,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:01,261 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 167 mSDsluCounter, 13198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 17576 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:01,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 17576 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2022-01-10 07:45:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 5776. [2022-01-10 07:45:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5776 states, 5574 states have (on average 1.4928238249013277) internal successors, (8321), 5580 states have internal predecessors, (8321), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:45:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5776 states to 5776 states and 8543 transitions. [2022-01-10 07:45:01,576 INFO L78 Accepts]: Start accepts. Automaton has 5776 states and 8543 transitions. Word has length 236 [2022-01-10 07:45:01,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:01,577 INFO L470 AbstractCegarLoop]: Abstraction has 5776 states and 8543 transitions. [2022-01-10 07:45:01,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5776 states and 8543 transitions. [2022-01-10 07:45:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:45:01,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:01,581 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:01,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:01,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:01,791 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:01,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:01,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1886661093, now seen corresponding path program 1 times [2022-01-10 07:45:01,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846314089] [2022-01-10 07:45:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:01,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:01,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:01,792 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:01,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:45:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:01,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:01,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:45:02,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:02,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:02,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846314089] [2022-01-10 07:45:02,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846314089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:02,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:02,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:45:02,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817603817] [2022-01-10 07:45:02,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:02,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:02,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:02,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:02,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:02,221 INFO L87 Difference]: Start difference. First operand 5776 states and 8543 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:02,467 INFO L93 Difference]: Finished difference Result 9609 states and 13437 transitions. [2022-01-10 07:45:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:02,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:45:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:02,478 INFO L225 Difference]: With dead ends: 9609 [2022-01-10 07:45:02,478 INFO L226 Difference]: Without dead ends: 5972 [2022-01-10 07:45:02,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:02,485 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 128 mSDsluCounter, 13183 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 17561 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:02,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 17561 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2022-01-10 07:45:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 5788. [2022-01-10 07:45:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5788 states, 5586 states have (on average 1.4860365198711063) internal successors, (8301), 5592 states have internal predecessors, (8301), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:45:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5788 states to 5788 states and 8523 transitions. [2022-01-10 07:45:02,769 INFO L78 Accepts]: Start accepts. Automaton has 5788 states and 8523 transitions. Word has length 236 [2022-01-10 07:45:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:02,769 INFO L470 AbstractCegarLoop]: Abstraction has 5788 states and 8523 transitions. [2022-01-10 07:45:02,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5788 states and 8523 transitions. [2022-01-10 07:45:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:45:02,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:02,773 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:02,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:02,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:02,986 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash -7845925, now seen corresponding path program 1 times [2022-01-10 07:45:02,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:02,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556512185] [2022-01-10 07:45:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:02,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:02,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:02,988 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:02,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:45:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:03,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:03,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:45:03,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:03,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:03,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556512185] [2022-01-10 07:45:03,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556512185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:03,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:03,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:45:03,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249137502] [2022-01-10 07:45:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:03,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:03,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:03,376 INFO L87 Difference]: Start difference. First operand 5788 states and 8523 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:03,623 INFO L93 Difference]: Finished difference Result 9577 states and 13325 transitions. [2022-01-10 07:45:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:03,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:45:03,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:03,634 INFO L225 Difference]: With dead ends: 9577 [2022-01-10 07:45:03,635 INFO L226 Difference]: Without dead ends: 5928 [2022-01-10 07:45:03,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:03,643 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 89 mSDsluCounter, 13168 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 17546 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:03,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 17546 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5928 states. [2022-01-10 07:45:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5928 to 5800. [2022-01-10 07:45:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5800 states, 5598 states have (on average 1.4792783136834584) internal successors, (8281), 5604 states have internal predecessors, (8281), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:45:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5800 states to 5800 states and 8503 transitions. [2022-01-10 07:45:03,939 INFO L78 Accepts]: Start accepts. Automaton has 5800 states and 8503 transitions. Word has length 236 [2022-01-10 07:45:03,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:03,939 INFO L470 AbstractCegarLoop]: Abstraction has 5800 states and 8503 transitions. [2022-01-10 07:45:03,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5800 states and 8503 transitions. [2022-01-10 07:45:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:45:03,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:03,944 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:03,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:04,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:04,156 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2066549147, now seen corresponding path program 1 times [2022-01-10 07:45:04,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:04,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516938605] [2022-01-10 07:45:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:04,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:04,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:04,158 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:04,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:45:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:04,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:04,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 07:45:04,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:04,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:04,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516938605] [2022-01-10 07:45:04,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516938605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:04,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:04,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:45:04,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570911495] [2022-01-10 07:45:04,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:04,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:04,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:04,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:04,567 INFO L87 Difference]: Start difference. First operand 5800 states and 8503 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:04,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:04,879 INFO L93 Difference]: Finished difference Result 10217 states and 14059 transitions. [2022-01-10 07:45:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:04,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:45:04,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:04,891 INFO L225 Difference]: With dead ends: 10217 [2022-01-10 07:45:04,891 INFO L226 Difference]: Without dead ends: 6556 [2022-01-10 07:45:04,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:04,898 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 50 mSDsluCounter, 13153 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 17531 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:04,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 17531 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2022-01-10 07:45:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 5908. [2022-01-10 07:45:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5908 states, 5706 states have (on average 1.4702067998597967) internal successors, (8389), 5712 states have internal predecessors, (8389), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:45:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5908 states to 5908 states and 8611 transitions. [2022-01-10 07:45:05,176 INFO L78 Accepts]: Start accepts. Automaton has 5908 states and 8611 transitions. Word has length 236 [2022-01-10 07:45:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:05,177 INFO L470 AbstractCegarLoop]: Abstraction has 5908 states and 8611 transitions. [2022-01-10 07:45:05,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5908 states and 8611 transitions. [2022-01-10 07:45:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:45:05,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:05,181 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:05,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:05,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:05,393 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:05,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1158276261, now seen corresponding path program 1 times [2022-01-10 07:45:05,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:05,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263196789] [2022-01-10 07:45:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:05,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:05,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:05,395 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:05,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:45:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:05,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:05,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 07:45:05,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:05,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:05,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263196789] [2022-01-10 07:45:05,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263196789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:05,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:05,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:45:05,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483930340] [2022-01-10 07:45:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:05,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:05,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:05,780 INFO L87 Difference]: Start difference. First operand 5908 states and 8611 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:06,036 INFO L93 Difference]: Finished difference Result 9705 states and 13349 transitions. [2022-01-10 07:45:06,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:06,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:45:06,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:06,047 INFO L225 Difference]: With dead ends: 9705 [2022-01-10 07:45:06,047 INFO L226 Difference]: Without dead ends: 5936 [2022-01-10 07:45:06,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:06,110 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 10 mSDsluCounter, 13133 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17511 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:06,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 17511 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2022-01-10 07:45:06,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 5920. [2022-01-10 07:45:06,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5920 states, 5718 states have (on average 1.4636236446309898) internal successors, (8369), 5724 states have internal predecessors, (8369), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:45:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5920 states to 5920 states and 8591 transitions. [2022-01-10 07:45:06,363 INFO L78 Accepts]: Start accepts. Automaton has 5920 states and 8591 transitions. Word has length 236 [2022-01-10 07:45:06,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:06,364 INFO L470 AbstractCegarLoop]: Abstraction has 5920 states and 8591 transitions. [2022-01-10 07:45:06,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:06,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5920 states and 8591 transitions. [2022-01-10 07:45:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:45:06,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:06,367 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:06,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:06,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:06,569 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:06,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:06,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2074116837, now seen corresponding path program 1 times [2022-01-10 07:45:06,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:06,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121755961] [2022-01-10 07:45:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:06,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:06,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:06,572 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:06,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:45:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:06,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:45:06,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 07:45:07,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:07,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:07,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121755961] [2022-01-10 07:45:07,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121755961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:07,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:07,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:07,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882173498] [2022-01-10 07:45:07,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:07,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:07,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:07,076 INFO L87 Difference]: Start difference. First operand 5920 states and 8591 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:07,573 INFO L93 Difference]: Finished difference Result 9702 states and 13208 transitions. [2022-01-10 07:45:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:45:07,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:45:07,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:07,585 INFO L225 Difference]: With dead ends: 9702 [2022-01-10 07:45:07,585 INFO L226 Difference]: Without dead ends: 5920 [2022-01-10 07:45:07,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:07,593 INFO L933 BasicCegarLoop]: 4352 mSDtfsCounter, 4425 mSDsluCounter, 8359 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4441 SdHoareTripleChecker+Valid, 12711 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:07,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4441 Valid, 12711 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:07,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5920 states. [2022-01-10 07:45:07,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5920 to 5920. [2022-01-10 07:45:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5920 states, 5718 states have (on average 1.4611752360965373) internal successors, (8355), 5724 states have internal predecessors, (8355), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2022-01-10 07:45:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5920 states to 5920 states and 8577 transitions. [2022-01-10 07:45:07,854 INFO L78 Accepts]: Start accepts. Automaton has 5920 states and 8577 transitions. Word has length 236 [2022-01-10 07:45:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:07,855 INFO L470 AbstractCegarLoop]: Abstraction has 5920 states and 8577 transitions. [2022-01-10 07:45:07,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5920 states and 8577 transitions. [2022-01-10 07:45:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:45:07,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:07,858 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:07,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 07:45:08,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:08,059 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1636078809, now seen corresponding path program 1 times [2022-01-10 07:45:08,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:08,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73865856] [2022-01-10 07:45:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:08,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:08,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:08,061 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:08,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:45:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:08,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:45:08,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 07:45:08,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:08,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:08,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73865856] [2022-01-10 07:45:08,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73865856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:08,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:08,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:08,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258518281] [2022-01-10 07:45:08,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:08,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:08,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:08,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:08,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:08,602 INFO L87 Difference]: Start difference. First operand 5920 states and 8577 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:09,379 INFO L93 Difference]: Finished difference Result 10104 states and 13677 transitions. [2022-01-10 07:45:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:09,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:45:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:09,389 INFO L225 Difference]: With dead ends: 10104 [2022-01-10 07:45:09,389 INFO L226 Difference]: Without dead ends: 6322 [2022-01-10 07:45:09,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:09,395 INFO L933 BasicCegarLoop]: 4429 mSDtfsCounter, 4573 mSDsluCounter, 8354 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 12783 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:09,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4589 Valid, 12783 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:45:09,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2022-01-10 07:45:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 6182. [2022-01-10 07:45:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 5968 states have (on average 1.4425268096514745) internal successors, (8609), 5974 states have internal predecessors, (8609), 114 states have call successors, (114), 96 states have call predecessors, (114), 98 states have return successors, (116), 112 states have call predecessors, (116), 114 states have call successors, (116) [2022-01-10 07:45:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 8839 transitions. [2022-01-10 07:45:09,714 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 8839 transitions. Word has length 236 [2022-01-10 07:45:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:09,715 INFO L470 AbstractCegarLoop]: Abstraction has 6182 states and 8839 transitions. [2022-01-10 07:45:09,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 8839 transitions. [2022-01-10 07:45:09,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:45:09,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:09,718 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:09,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 07:45:09,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:09,918 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:09,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:09,919 INFO L85 PathProgramCache]: Analyzing trace with hash 543443607, now seen corresponding path program 1 times [2022-01-10 07:45:09,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:09,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424508264] [2022-01-10 07:45:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:09,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:09,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:09,921 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:09,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:45:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:10,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:45:10,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 07:45:10,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:10,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:10,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424508264] [2022-01-10 07:45:10,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424508264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:10,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:10,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:10,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75681000] [2022-01-10 07:45:10,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:10,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:10,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:10,453 INFO L87 Difference]: Start difference. First operand 6182 states and 8839 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:11,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:11,082 INFO L93 Difference]: Finished difference Result 10448 states and 14015 transitions. [2022-01-10 07:45:11,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:11,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 07:45:11,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:11,092 INFO L225 Difference]: With dead ends: 10448 [2022-01-10 07:45:11,093 INFO L226 Difference]: Without dead ends: 6404 [2022-01-10 07:45:11,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:11,098 INFO L933 BasicCegarLoop]: 4359 mSDtfsCounter, 4491 mSDsluCounter, 8350 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 12709 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:11,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4507 Valid, 12709 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:45:11,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2022-01-10 07:45:11,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 6360. [2022-01-10 07:45:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6360 states, 6142 states have (on average 1.4228264408987301) internal successors, (8739), 6148 states have internal predecessors, (8739), 114 states have call successors, (114), 100 states have call predecessors, (114), 102 states have return successors, (116), 112 states have call predecessors, (116), 114 states have call successors, (116) [2022-01-10 07:45:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 8969 transitions. [2022-01-10 07:45:11,382 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 8969 transitions. Word has length 236 [2022-01-10 07:45:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:11,382 INFO L470 AbstractCegarLoop]: Abstraction has 6360 states and 8969 transitions. [2022-01-10 07:45:11,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 8969 transitions. [2022-01-10 07:45:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:45:11,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:11,385 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:11,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 07:45:11,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:11,586 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:11,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1014799957, now seen corresponding path program 1 times [2022-01-10 07:45:11,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:11,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355762979] [2022-01-10 07:45:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:11,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:11,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:11,588 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:11,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:45:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:11,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:45:11,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 07:45:12,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:12,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:12,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355762979] [2022-01-10 07:45:12,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355762979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:12,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:12,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:12,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244141955] [2022-01-10 07:45:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:12,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:45:12,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:12,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:45:12,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:45:12,182 INFO L87 Difference]: Start difference. First operand 6360 states and 8969 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:45:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:12,942 INFO L93 Difference]: Finished difference Result 14674 states and 18777 transitions. [2022-01-10 07:45:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:12,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 236 [2022-01-10 07:45:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:12,968 INFO L225 Difference]: With dead ends: 14674 [2022-01-10 07:45:12,968 INFO L226 Difference]: Without dead ends: 10454 [2022-01-10 07:45:12,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:12,980 INFO L933 BasicCegarLoop]: 4548 mSDtfsCounter, 4490 mSDsluCounter, 4668 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4496 SdHoareTripleChecker+Valid, 9216 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:12,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4496 Valid, 9216 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:12,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10454 states. [2022-01-10 07:45:13,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10454 to 10452. [2022-01-10 07:45:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10452 states, 10027 states have (on average 1.3279146304976563) internal successors, (13315), 10042 states have internal predecessors, (13315), 219 states have call successors, (219), 192 states have call predecessors, (219), 204 states have return successors, (243), 219 states have call predecessors, (243), 219 states have call successors, (243) [2022-01-10 07:45:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10452 states to 10452 states and 13777 transitions. [2022-01-10 07:45:13,655 INFO L78 Accepts]: Start accepts. Automaton has 10452 states and 13777 transitions. Word has length 236 [2022-01-10 07:45:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:13,656 INFO L470 AbstractCegarLoop]: Abstraction has 10452 states and 13777 transitions. [2022-01-10 07:45:13,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:45:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 10452 states and 13777 transitions. [2022-01-10 07:45:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 07:45:13,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:13,661 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:13,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-01-10 07:45:13,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:13,862 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:13,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:13,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1426657833, now seen corresponding path program 1 times [2022-01-10 07:45:13,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:13,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152931106] [2022-01-10 07:45:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:13,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:13,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:13,865 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:13,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 07:45:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:14,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:45:14,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 07:45:14,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:14,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:14,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152931106] [2022-01-10 07:45:14,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152931106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:14,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:14,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:45:14,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280627566] [2022-01-10 07:45:14,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:14,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:45:14,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:45:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:14,260 INFO L87 Difference]: Start difference. First operand 10452 states and 13777 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)