/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_label42+token_ring.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:40:13,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:40:13,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:40:13,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:40:13,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:40:13,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:40:13,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:40:13,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:40:13,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:40:13,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:40:13,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:40:13,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:40:13,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:40:13,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:40:13,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:40:13,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:40:13,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:40:13,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:40:13,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:40:13,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:40:13,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:40:13,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:40:13,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:40:13,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:40:13,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:40:13,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:40:13,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:40:13,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:40:13,812 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 07:40:13,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:40:13,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:40:13,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:40:13,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:40:13,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:40:13,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:40:13,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:40:13,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:40:13,842 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:40:13,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:40:13,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:40:13,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:40:13,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:40:13,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:40:13,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:40:13,844 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:40:13,844 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:40:13,844 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:40:13,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:40:13,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:40:13,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:40:13,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:40:13,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:40:13,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:40:13,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:40:13,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:40:13,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:40:13,845 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:40:13,845 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:40:13,845 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:40:13,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:40:13,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:40:13,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:40:13,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:40:14,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:40:14,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:40:14,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:40:14,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:40:14,097 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:40:14,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.05.cil-1.c [2022-01-10 07:40:14,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17494dfb7/1383aafba6ef498fbfeb5cce70cf1511/FLAGdafbe2a69 [2022-01-10 07:40:14,926 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:40:14,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.05.cil-1.c [2022-01-10 07:40:14,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17494dfb7/1383aafba6ef498fbfeb5cce70cf1511/FLAGdafbe2a69 [2022-01-10 07:40:15,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17494dfb7/1383aafba6ef498fbfeb5cce70cf1511 [2022-01-10 07:40:15,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:40:15,185 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:40:15,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:40:15,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:40:15,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:40:15,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:40:15" (1/1) ... [2022-01-10 07:40:15,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b7fee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:15, skipping insertion in model container [2022-01-10 07:40:15,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:40:15" (1/1) ... [2022-01-10 07:40:15,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:40:15,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:40:16,751 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_label42+token_ring.05.cil-1.c[378560,378573] [2022-01-10 07:40:16,773 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_label42+token_ring.05.cil-1.c[383339,383352] [2022-01-10 07:40:16,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:40:16,901 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:40:17,493 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_label42+token_ring.05.cil-1.c[378560,378573] [2022-01-10 07:40:17,498 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_label42+token_ring.05.cil-1.c[383339,383352] [2022-01-10 07:40:17,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:40:17,554 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:40:17,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17 WrapperNode [2022-01-10 07:40:17,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:40:17,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:40:17,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:40:17,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:40:17,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (1/1) ... [2022-01-10 07:40:17,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (1/1) ... [2022-01-10 07:40:17,844 INFO L137 Inliner]: procedures = 55, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12765 [2022-01-10 07:40:17,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:40:17,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:40:17,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:40:17,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:40:17,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (1/1) ... [2022-01-10 07:40:17,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (1/1) ... [2022-01-10 07:40:17,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (1/1) ... [2022-01-10 07:40:17,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (1/1) ... [2022-01-10 07:40:18,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (1/1) ... [2022-01-10 07:40:18,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (1/1) ... [2022-01-10 07:40:18,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (1/1) ... [2022-01-10 07:40:18,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:40:18,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:40:18,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:40:18,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:40:18,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (1/1) ... [2022-01-10 07:40:18,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:40:18,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:40:18,282 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 07:40:18,294 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 07:40:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:40:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:40:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:40:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:40:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:40:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:40:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:40:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:40:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:40:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:40:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:40:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:40:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:40:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:40:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:40:18,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:40:18,535 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:40:18,536 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:40:25,824 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:40:25,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:40:25,848 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 07:40:25,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:40:25 BoogieIcfgContainer [2022-01-10 07:40:25,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:40:25,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:40:25,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:40:25,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:40:25,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:40:15" (1/3) ... [2022-01-10 07:40:25,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1ac938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:40:25, skipping insertion in model container [2022-01-10 07:40:25,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:17" (2/3) ... [2022-01-10 07:40:25,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1ac938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:40:25, skipping insertion in model container [2022-01-10 07:40:25,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:40:25" (3/3) ... [2022-01-10 07:40:25,859 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.05.cil-1.c [2022-01-10 07:40:25,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:40:25,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:40:25,910 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:40:25,915 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 07:40:25,915 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:40:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-10 07:40:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:25,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:25,981 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] [2022-01-10 07:40:25,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:25,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2022-01-10 07:40:25,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:25,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294506409] [2022-01-10 07:40:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:25,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:25,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:26,026 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 07:40:26,028 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 07:40:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:26,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:40:26,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:26,404 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 07:40:26,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:26,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:26,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294506409] [2022-01-10 07:40:26,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294506409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:26,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:26,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:40:26,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002522536] [2022-01-10 07:40:26,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:26,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:40:26,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:40:26,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:26,453 INFO L87 Difference]: Start difference. First operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 07:40:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:26,581 INFO L93 Difference]: Finished difference Result 4772 states and 8813 transitions. [2022-01-10 07:40:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:40:26,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:26,604 INFO L225 Difference]: With dead ends: 4772 [2022-01-10 07:40:26,604 INFO L226 Difference]: Without dead ends: 2323 [2022-01-10 07:40:26,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 07:40:26,619 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 302 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 8355 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 07:40:26,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 8355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2022-01-10 07:40:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2323. [2022-01-10 07:40:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2296 states have (on average 1.84102787456446) internal successors, (4227), 2298 states have internal predecessors, (4227), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-10 07:40:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 4265 transitions. [2022-01-10 07:40:26,723 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 4265 transitions. Word has length 101 [2022-01-10 07:40:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:26,724 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 4265 transitions. [2022-01-10 07:40:26,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 07:40:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 4265 transitions. [2022-01-10 07:40:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:26,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:26,729 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] [2022-01-10 07:40:26,780 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 07:40:26,936 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 07:40:26,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash 990118841, now seen corresponding path program 1 times [2022-01-10 07:40:26,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:26,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200122309] [2022-01-10 07:40:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:26,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:26,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:26,940 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 07:40:26,970 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 07:40:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:27,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:27,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:27,333 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 07:40:27,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:27,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:27,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200122309] [2022-01-10 07:40:27,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200122309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:27,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:27,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:27,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168399067] [2022-01-10 07:40:27,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:27,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:27,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:27,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:27,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:27,337 INFO L87 Difference]: Start difference. First operand 2323 states and 4265 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 07:40:27,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:27,772 INFO L93 Difference]: Finished difference Result 2721 states and 4881 transitions. [2022-01-10 07:40:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:27,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:27,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:27,783 INFO L225 Difference]: With dead ends: 2721 [2022-01-10 07:40:27,784 INFO L226 Difference]: Without dead ends: 2532 [2022-01-10 07:40:27,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:27,786 INFO L933 BasicCegarLoop]: 4287 mSDtfsCounter, 4510 mSDsluCounter, 8509 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4523 SdHoareTripleChecker+Valid, 12796 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:27,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4523 Valid, 12796 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:40:27,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-01-10 07:40:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2517. [2022-01-10 07:40:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.820980153908465) internal successors, (4496), 2472 states have internal predecessors, (4496), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:40:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4563 transitions. [2022-01-10 07:40:27,832 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4563 transitions. Word has length 101 [2022-01-10 07:40:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:27,832 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4563 transitions. [2022-01-10 07:40:27,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 07:40:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4563 transitions. [2022-01-10 07:40:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:27,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:27,834 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] [2022-01-10 07:40:27,841 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 07:40:28,041 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 07:40:28,041 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:28,042 INFO L85 PathProgramCache]: Analyzing trace with hash -726765763, now seen corresponding path program 1 times [2022-01-10 07:40:28,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:28,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995167009] [2022-01-10 07:40:28,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:28,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:28,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:28,044 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 07:40:28,046 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 07:40:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:28,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:28,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:28,386 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 07:40:28,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:28,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:28,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995167009] [2022-01-10 07:40:28,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995167009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:28,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:28,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:28,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762803368] [2022-01-10 07:40:28,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:28,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:28,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:28,388 INFO L87 Difference]: Start difference. First operand 2517 states and 4563 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:28,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:28,611 INFO L93 Difference]: Finished difference Result 2900 states and 5155 transitions. [2022-01-10 07:40:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:28,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:28,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:28,619 INFO L225 Difference]: With dead ends: 2900 [2022-01-10 07:40:28,620 INFO L226 Difference]: Without dead ends: 2517 [2022-01-10 07:40:28,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:28,622 INFO L933 BasicCegarLoop]: 4240 mSDtfsCounter, 4353 mSDsluCounter, 8239 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4366 SdHoareTripleChecker+Valid, 12479 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:28,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4366 Valid, 12479 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2022-01-10 07:40:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2517. [2022-01-10 07:40:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.8181449979748887) internal successors, (4489), 2472 states have internal predecessors, (4489), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:40:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4556 transitions. [2022-01-10 07:40:28,667 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4556 transitions. Word has length 101 [2022-01-10 07:40:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:28,667 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4556 transitions. [2022-01-10 07:40:28,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4556 transitions. [2022-01-10 07:40:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:28,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:28,669 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] [2022-01-10 07:40:28,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 07:40:28,876 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 07:40:28,876 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1711702841, now seen corresponding path program 1 times [2022-01-10 07:40:28,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:28,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505125781] [2022-01-10 07:40:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:28,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:28,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:28,879 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 07:40:28,881 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 07:40:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:28,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:28,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:29,115 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 07:40:29,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:29,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:29,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505125781] [2022-01-10 07:40:29,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505125781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:29,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:29,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:29,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459338655] [2022-01-10 07:40:29,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:29,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:29,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:29,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:29,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:29,117 INFO L87 Difference]: Start difference. First operand 2517 states and 4556 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:29,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:29,345 INFO L93 Difference]: Finished difference Result 2900 states and 5141 transitions. [2022-01-10 07:40:29,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:29,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:29,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:29,353 INFO L225 Difference]: With dead ends: 2900 [2022-01-10 07:40:29,353 INFO L226 Difference]: Without dead ends: 2517 [2022-01-10 07:40:29,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:29,356 INFO L933 BasicCegarLoop]: 4237 mSDtfsCounter, 4346 mSDsluCounter, 8235 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 12472 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:29,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4359 Valid, 12472 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:29,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2022-01-10 07:40:29,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2517. [2022-01-10 07:40:29,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.8153098420413123) internal successors, (4482), 2472 states have internal predecessors, (4482), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:40:29,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4549 transitions. [2022-01-10 07:40:29,402 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4549 transitions. Word has length 101 [2022-01-10 07:40:29,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:29,402 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4549 transitions. [2022-01-10 07:40:29,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4549 transitions. [2022-01-10 07:40:29,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:29,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:29,404 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] [2022-01-10 07:40:29,425 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 07:40:29,611 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 07:40:29,611 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:29,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1525979595, now seen corresponding path program 1 times [2022-01-10 07:40:29,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:29,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415473109] [2022-01-10 07:40:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:29,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:29,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:29,614 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 07:40:29,615 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 07:40:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:29,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:29,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:29,832 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 07:40:29,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:29,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:29,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415473109] [2022-01-10 07:40:29,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415473109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:29,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:29,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:29,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988392357] [2022-01-10 07:40:29,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:29,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:29,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:29,834 INFO L87 Difference]: Start difference. First operand 2517 states and 4549 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:30,101 INFO L93 Difference]: Finished difference Result 2900 states and 5127 transitions. [2022-01-10 07:40:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:30,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:30,109 INFO L225 Difference]: With dead ends: 2900 [2022-01-10 07:40:30,110 INFO L226 Difference]: Without dead ends: 2517 [2022-01-10 07:40:30,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:30,128 INFO L933 BasicCegarLoop]: 4234 mSDtfsCounter, 4340 mSDsluCounter, 8231 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 12465 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:30,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4353 Valid, 12465 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2022-01-10 07:40:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2517. [2022-01-10 07:40:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.8124746861077359) internal successors, (4475), 2472 states have internal predecessors, (4475), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:40:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4542 transitions. [2022-01-10 07:40:30,214 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4542 transitions. Word has length 101 [2022-01-10 07:40:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:30,214 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4542 transitions. [2022-01-10 07:40:30,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4542 transitions. [2022-01-10 07:40:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:30,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:30,232 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] [2022-01-10 07:40:30,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:30,438 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 07:40:30,439 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash -660589639, now seen corresponding path program 1 times [2022-01-10 07:40:30,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:30,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037067874] [2022-01-10 07:40:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:30,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:30,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:30,441 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 07:40:30,442 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 07:40:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:30,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:30,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:30,663 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 07:40:30,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:30,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:30,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037067874] [2022-01-10 07:40:30,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037067874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:30,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:30,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:30,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691629555] [2022-01-10 07:40:30,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:30,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:30,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:30,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:30,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:30,665 INFO L87 Difference]: Start difference. First operand 2517 states and 4542 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:30,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:30,999 INFO L93 Difference]: Finished difference Result 2900 states and 5113 transitions. [2022-01-10 07:40:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:31,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:31,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:31,009 INFO L225 Difference]: With dead ends: 2900 [2022-01-10 07:40:31,010 INFO L226 Difference]: Without dead ends: 2517 [2022-01-10 07:40:31,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:31,028 INFO L933 BasicCegarLoop]: 4231 mSDtfsCounter, 4334 mSDsluCounter, 8227 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 12458 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:31,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4347 Valid, 12458 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:40:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2022-01-10 07:40:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2517. [2022-01-10 07:40:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.8096395301741597) internal successors, (4468), 2472 states have internal predecessors, (4468), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:40:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4535 transitions. [2022-01-10 07:40:31,119 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4535 transitions. Word has length 101 [2022-01-10 07:40:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:31,119 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4535 transitions. [2022-01-10 07:40:31,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4535 transitions. [2022-01-10 07:40:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:31,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:31,120 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] [2022-01-10 07:40:31,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 07:40:31,327 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 07:40:31,327 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1741052491, now seen corresponding path program 1 times [2022-01-10 07:40:31,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:31,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595783758] [2022-01-10 07:40:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:31,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:31,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:31,330 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 07:40:31,331 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 07:40:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:31,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:31,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:31,515 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 07:40:31,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:31,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:31,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595783758] [2022-01-10 07:40:31,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595783758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:31,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:31,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:31,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010955891] [2022-01-10 07:40:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:31,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:31,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:31,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:31,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:31,517 INFO L87 Difference]: Start difference. First operand 2517 states and 4535 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:31,872 INFO L93 Difference]: Finished difference Result 2994 states and 5243 transitions. [2022-01-10 07:40:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:31,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:31,880 INFO L225 Difference]: With dead ends: 2994 [2022-01-10 07:40:31,880 INFO L226 Difference]: Without dead ends: 2611 [2022-01-10 07:40:31,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:31,883 INFO L933 BasicCegarLoop]: 4228 mSDtfsCounter, 4384 mSDsluCounter, 8222 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4397 SdHoareTripleChecker+Valid, 12450 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:31,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4397 Valid, 12450 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:40:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-01-10 07:40:31,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2022-01-10 07:40:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2557 states have (on average 1.792334767305436) internal successors, (4583), 2560 states have internal predecessors, (4583), 35 states have call successors, (35), 16 states have call predecessors, (35), 17 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 07:40:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 4654 transitions. [2022-01-10 07:40:31,927 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 4654 transitions. Word has length 101 [2022-01-10 07:40:31,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:31,927 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 4654 transitions. [2022-01-10 07:40:31,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 4654 transitions. [2022-01-10 07:40:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:31,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:31,928 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] [2022-01-10 07:40:31,946 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 07:40:32,136 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 07:40:32,136 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash -363183880, now seen corresponding path program 1 times [2022-01-10 07:40:32,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:32,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081178783] [2022-01-10 07:40:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:32,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:32,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:32,160 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 07:40:32,207 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 07:40:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:32,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:32,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:32,432 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 07:40:32,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:32,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:32,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081178783] [2022-01-10 07:40:32,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081178783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:32,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:32,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:32,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889018882] [2022-01-10 07:40:32,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:32,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:32,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:32,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:32,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:32,434 INFO L87 Difference]: Start difference. First operand 2611 states and 4654 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:32,763 INFO L93 Difference]: Finished difference Result 3182 states and 5481 transitions. [2022-01-10 07:40:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:32,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:32,772 INFO L225 Difference]: With dead ends: 3182 [2022-01-10 07:40:32,772 INFO L226 Difference]: Without dead ends: 2705 [2022-01-10 07:40:32,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:32,774 INFO L933 BasicCegarLoop]: 4226 mSDtfsCounter, 4377 mSDsluCounter, 8218 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4390 SdHoareTripleChecker+Valid, 12444 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:32,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4390 Valid, 12444 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:40:32,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-01-10 07:40:32,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2705. [2022-01-10 07:40:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2645 states have (on average 1.7746691871455575) internal successors, (4694), 2648 states have internal predecessors, (4694), 37 states have call successors, (37), 20 states have call predecessors, (37), 21 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:40:32,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4769 transitions. [2022-01-10 07:40:32,832 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4769 transitions. Word has length 101 [2022-01-10 07:40:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:32,832 INFO L470 AbstractCegarLoop]: Abstraction has 2705 states and 4769 transitions. [2022-01-10 07:40:32,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4769 transitions. [2022-01-10 07:40:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:32,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:32,834 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] [2022-01-10 07:40:32,859 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 07:40:33,042 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 07:40:33,043 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:33,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:33,043 INFO L85 PathProgramCache]: Analyzing trace with hash 341836276, now seen corresponding path program 1 times [2022-01-10 07:40:33,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:33,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179022440] [2022-01-10 07:40:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:33,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:33,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:33,056 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 07:40:33,057 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 07:40:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:33,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:33,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:33,283 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 07:40:33,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:33,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:33,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179022440] [2022-01-10 07:40:33,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179022440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:33,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:33,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:33,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968903667] [2022-01-10 07:40:33,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:33,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:33,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:33,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:33,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:33,286 INFO L87 Difference]: Start difference. First operand 2705 states and 4769 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:33,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:33,628 INFO L93 Difference]: Finished difference Result 3370 states and 5711 transitions. [2022-01-10 07:40:33,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:33,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:33,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:33,663 INFO L225 Difference]: With dead ends: 3370 [2022-01-10 07:40:33,663 INFO L226 Difference]: Without dead ends: 2799 [2022-01-10 07:40:33,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:33,667 INFO L933 BasicCegarLoop]: 4221 mSDtfsCounter, 4371 mSDsluCounter, 8214 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4384 SdHoareTripleChecker+Valid, 12435 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:33,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4384 Valid, 12435 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:40:33,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-01-10 07:40:33,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2799. [2022-01-10 07:40:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2733 states have (on average 1.756677643615075) internal successors, (4801), 2736 states have internal predecessors, (4801), 39 states have call successors, (39), 24 states have call predecessors, (39), 25 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:40:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4880 transitions. [2022-01-10 07:40:33,723 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4880 transitions. Word has length 101 [2022-01-10 07:40:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:33,723 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 4880 transitions. [2022-01-10 07:40:33,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4880 transitions. [2022-01-10 07:40:33,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:33,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:33,724 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] [2022-01-10 07:40:33,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:33,931 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 07:40:33,931 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1196269127, now seen corresponding path program 1 times [2022-01-10 07:40:33,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:33,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130766258] [2022-01-10 07:40:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:33,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:33,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:33,943 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 07:40:33,945 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 07:40:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:34,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:34,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:34,165 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 07:40:34,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:34,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:34,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130766258] [2022-01-10 07:40:34,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130766258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:34,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:34,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:34,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611294413] [2022-01-10 07:40:34,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:34,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:34,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:34,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:34,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:34,167 INFO L87 Difference]: Start difference. First operand 2799 states and 4880 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:34,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:34,425 INFO L93 Difference]: Finished difference Result 3558 states and 5933 transitions. [2022-01-10 07:40:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:34,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:34,431 INFO L225 Difference]: With dead ends: 3558 [2022-01-10 07:40:34,431 INFO L226 Difference]: Without dead ends: 2893 [2022-01-10 07:40:34,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:34,433 INFO L933 BasicCegarLoop]: 4218 mSDtfsCounter, 4364 mSDsluCounter, 8210 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 12428 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:34,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4377 Valid, 12428 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2022-01-10 07:40:34,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2893. [2022-01-10 07:40:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2821 states have (on average 1.738390641616448) internal successors, (4904), 2824 states have internal predecessors, (4904), 41 states have call successors, (41), 28 states have call predecessors, (41), 29 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:40:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4987 transitions. [2022-01-10 07:40:34,484 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4987 transitions. Word has length 101 [2022-01-10 07:40:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:34,484 INFO L470 AbstractCegarLoop]: Abstraction has 2893 states and 4987 transitions. [2022-01-10 07:40:34,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4987 transitions. [2022-01-10 07:40:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:34,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:34,486 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] [2022-01-10 07:40:34,495 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 07:40:34,692 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 07:40:34,693 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:34,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash -860625226, now seen corresponding path program 1 times [2022-01-10 07:40:34,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:34,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701649407] [2022-01-10 07:40:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:34,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:34,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:34,695 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 07:40:34,698 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 07:40:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:34,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:34,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:34,883 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 07:40:34,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:34,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:34,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701649407] [2022-01-10 07:40:34,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701649407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:34,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:34,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:34,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546446471] [2022-01-10 07:40:34,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:34,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:34,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:34,885 INFO L87 Difference]: Start difference. First operand 2893 states and 4987 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:35,207 INFO L93 Difference]: Finished difference Result 3746 states and 6147 transitions. [2022-01-10 07:40:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:35,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:35,213 INFO L225 Difference]: With dead ends: 3746 [2022-01-10 07:40:35,213 INFO L226 Difference]: Without dead ends: 2987 [2022-01-10 07:40:35,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:35,216 INFO L933 BasicCegarLoop]: 4215 mSDtfsCounter, 4356 mSDsluCounter, 8206 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4369 SdHoareTripleChecker+Valid, 12421 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:35,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4369 Valid, 12421 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:40:35,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2022-01-10 07:40:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2987. [2022-01-10 07:40:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2909 states have (on average 1.719834994843589) internal successors, (5003), 2912 states have internal predecessors, (5003), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:40:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 5090 transitions. [2022-01-10 07:40:35,268 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 5090 transitions. Word has length 101 [2022-01-10 07:40:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:35,268 INFO L470 AbstractCegarLoop]: Abstraction has 2987 states and 5090 transitions. [2022-01-10 07:40:35,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 07:40:35,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 5090 transitions. [2022-01-10 07:40:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:35,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:35,269 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] [2022-01-10 07:40:35,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:35,476 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 07:40:35,476 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:35,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:35,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1747979213, now seen corresponding path program 1 times [2022-01-10 07:40:35,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:35,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323360333] [2022-01-10 07:40:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:35,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:35,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:35,478 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 07:40:35,481 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 07:40:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:35,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:35,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:40:35,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:35,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:35,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323360333] [2022-01-10 07:40:35,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323360333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:35,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:35,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:35,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528515298] [2022-01-10 07:40:35,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:35,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:35,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:35,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:35,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:35,677 INFO L87 Difference]: Start difference. First operand 2987 states and 5090 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 07:40:35,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:35,750 INFO L93 Difference]: Finished difference Result 3993 states and 6428 transitions. [2022-01-10 07:40:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:35,756 INFO L225 Difference]: With dead ends: 3993 [2022-01-10 07:40:35,756 INFO L226 Difference]: Without dead ends: 3141 [2022-01-10 07:40:35,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:40:35,759 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 206 mSDsluCounter, 12784 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 17019 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 07:40:35,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 17019 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2022-01-10 07:40:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 2993. [2022-01-10 07:40:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2993 states, 2915 states have (on average 1.7149228130360206) internal successors, (4999), 2918 states have internal predecessors, (4999), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:40:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 5086 transitions. [2022-01-10 07:40:35,834 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 5086 transitions. Word has length 101 [2022-01-10 07:40:35,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:35,835 INFO L470 AbstractCegarLoop]: Abstraction has 2993 states and 5086 transitions. [2022-01-10 07:40:35,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 07:40:35,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 5086 transitions. [2022-01-10 07:40:35,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:35,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:35,836 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] [2022-01-10 07:40:35,845 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 07:40:36,043 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 07:40:36,043 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:36,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:36,044 INFO L85 PathProgramCache]: Analyzing trace with hash 860808245, now seen corresponding path program 1 times [2022-01-10 07:40:36,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:36,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232985166] [2022-01-10 07:40:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:36,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:36,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:36,046 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 07:40:36,047 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 07:40:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:36,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:36,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:36,239 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 07:40:36,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:36,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:36,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232985166] [2022-01-10 07:40:36,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232985166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:36,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:36,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:36,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624907510] [2022-01-10 07:40:36,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:36,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:36,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:36,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:36,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:36,241 INFO L87 Difference]: Start difference. First operand 2993 states and 5086 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 07:40:36,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:36,345 INFO L93 Difference]: Finished difference Result 3977 states and 6384 transitions. [2022-01-10 07:40:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:36,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:36,351 INFO L225 Difference]: With dead ends: 3977 [2022-01-10 07:40:36,351 INFO L226 Difference]: Without dead ends: 3119 [2022-01-10 07:40:36,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:40:36,354 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 167 mSDsluCounter, 12769 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 17004 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 07:40:36,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 17004 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2022-01-10 07:40:36,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 2999. [2022-01-10 07:40:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2921 states have (on average 1.7100308113659706) internal successors, (4995), 2924 states have internal predecessors, (4995), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:40:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 5082 transitions. [2022-01-10 07:40:36,409 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 5082 transitions. Word has length 101 [2022-01-10 07:40:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:36,410 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 5082 transitions. [2022-01-10 07:40:36,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 07:40:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 5082 transitions. [2022-01-10 07:40:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:36,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:36,411 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] [2022-01-10 07:40:36,442 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 07:40:36,641 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 07:40:36,642 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:36,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:36,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1421508023, now seen corresponding path program 1 times [2022-01-10 07:40:36,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:36,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135305020] [2022-01-10 07:40:36,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:36,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:36,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:36,644 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 07:40:36,646 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 07:40:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:36,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:36,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:36,863 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 07:40:36,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:36,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:36,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135305020] [2022-01-10 07:40:36,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135305020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:36,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:36,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:36,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97190467] [2022-01-10 07:40:36,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:36,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:36,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:36,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:36,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:36,865 INFO L87 Difference]: Start difference. First operand 2999 states and 5082 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 07:40:36,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:36,936 INFO L93 Difference]: Finished difference Result 3961 states and 6340 transitions. [2022-01-10 07:40:36,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:36,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:36,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:36,941 INFO L225 Difference]: With dead ends: 3961 [2022-01-10 07:40:36,942 INFO L226 Difference]: Without dead ends: 3097 [2022-01-10 07:40:36,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:40:36,944 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 128 mSDsluCounter, 12754 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 16989 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 07:40:36,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 16989 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:36,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2022-01-10 07:40:36,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3005. [2022-01-10 07:40:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3005 states, 2927 states have (on average 1.7051588657328323) internal successors, (4991), 2930 states have internal predecessors, (4991), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:40:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 5078 transitions. [2022-01-10 07:40:36,999 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 5078 transitions. Word has length 101 [2022-01-10 07:40:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:37,000 INFO L470 AbstractCegarLoop]: Abstraction has 3005 states and 5078 transitions. [2022-01-10 07:40:37,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 07:40:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 5078 transitions. [2022-01-10 07:40:37,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:37,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:37,001 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] [2022-01-10 07:40:37,008 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 07:40:37,208 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 07:40:37,209 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:37,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:37,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1865408697, now seen corresponding path program 1 times [2022-01-10 07:40:37,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:37,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33702193] [2022-01-10 07:40:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:37,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:37,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:37,211 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 07:40:37,212 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 07:40:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:37,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:37,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:37,412 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 07:40:37,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:37,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:37,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33702193] [2022-01-10 07:40:37,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33702193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:37,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:37,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:37,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240374651] [2022-01-10 07:40:37,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:37,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:37,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:37,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:37,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:37,414 INFO L87 Difference]: Start difference. First operand 3005 states and 5078 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 07:40:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:37,487 INFO L93 Difference]: Finished difference Result 3945 states and 6296 transitions. [2022-01-10 07:40:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:37,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:37,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:37,492 INFO L225 Difference]: With dead ends: 3945 [2022-01-10 07:40:37,492 INFO L226 Difference]: Without dead ends: 3075 [2022-01-10 07:40:37,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:40:37,494 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 89 mSDsluCounter, 12739 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 16974 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 07:40:37,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 16974 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2022-01-10 07:40:37,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 3011. [2022-01-10 07:40:37,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2933 states have (on average 1.700306853051483) internal successors, (4987), 2936 states have internal predecessors, (4987), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:40:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 5074 transitions. [2022-01-10 07:40:37,548 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 5074 transitions. Word has length 101 [2022-01-10 07:40:37,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:37,548 INFO L470 AbstractCegarLoop]: Abstraction has 3011 states and 5074 transitions. [2022-01-10 07:40:37,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 07:40:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 5074 transitions. [2022-01-10 07:40:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:37,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:37,549 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] [2022-01-10 07:40:37,556 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 07:40:37,756 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 07:40:37,756 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:37,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:37,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1512320315, now seen corresponding path program 1 times [2022-01-10 07:40:37,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:37,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490809232] [2022-01-10 07:40:37,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:37,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:37,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:37,758 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 07:40:37,760 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 07:40:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:37,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:37,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:37,961 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 07:40:37,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:37,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:37,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490809232] [2022-01-10 07:40:37,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490809232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:37,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:37,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:37,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873600500] [2022-01-10 07:40:37,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:37,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:37,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:37,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:37,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:37,962 INFO L87 Difference]: Start difference. First operand 3011 states and 5074 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 07:40:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:38,035 INFO L93 Difference]: Finished difference Result 3901 states and 6212 transitions. [2022-01-10 07:40:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:38,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-01-10 07:40:38,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:38,040 INFO L225 Difference]: With dead ends: 3901 [2022-01-10 07:40:38,040 INFO L226 Difference]: Without dead ends: 3025 [2022-01-10 07:40:38,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:40:38,042 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 10 mSDsluCounter, 12704 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16939 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 07:40:38,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 16939 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2022-01-10 07:40:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 3017. [2022-01-10 07:40:38,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 2939 states have (on average 1.695474651241919) internal successors, (4983), 2942 states have internal predecessors, (4983), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:40:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 5070 transitions. [2022-01-10 07:40:38,096 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 5070 transitions. Word has length 101 [2022-01-10 07:40:38,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:38,097 INFO L470 AbstractCegarLoop]: Abstraction has 3017 states and 5070 transitions. [2022-01-10 07:40:38,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 07:40:38,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 5070 transitions. [2022-01-10 07:40:38,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:38,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:38,098 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] [2022-01-10 07:40:38,104 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 07:40:38,304 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 07:40:38,305 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:38,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:38,306 INFO L85 PathProgramCache]: Analyzing trace with hash 668314813, now seen corresponding path program 1 times [2022-01-10 07:40:38,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:38,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413715040] [2022-01-10 07:40:38,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:38,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:38,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:38,307 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 07:40:38,309 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 07:40:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:38,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:40:38,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:38,546 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 07:40:38,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:38,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:38,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413715040] [2022-01-10 07:40:38,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413715040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:38,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:38,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:38,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115238496] [2022-01-10 07:40:38,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:38,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:38,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:38,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:38,548 INFO L87 Difference]: Start difference. First operand 3017 states and 5070 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:38,910 INFO L93 Difference]: Finished difference Result 3900 states and 6169 transitions. [2022-01-10 07:40:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:38,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:40:38,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:38,916 INFO L225 Difference]: With dead ends: 3900 [2022-01-10 07:40:38,916 INFO L226 Difference]: Without dead ends: 3017 [2022-01-10 07:40:38,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 07:40:38,919 INFO L933 BasicCegarLoop]: 4213 mSDtfsCounter, 4256 mSDsluCounter, 8203 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4268 SdHoareTripleChecker+Valid, 12416 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:38,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4268 Valid, 12416 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2022-01-10 07:40:39,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 3017. [2022-01-10 07:40:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 2939 states have (on average 1.693092888737666) internal successors, (4976), 2942 states have internal predecessors, (4976), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:40:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 5063 transitions. [2022-01-10 07:40:39,064 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 5063 transitions. Word has length 101 [2022-01-10 07:40:39,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:39,065 INFO L470 AbstractCegarLoop]: Abstraction has 3017 states and 5063 transitions. [2022-01-10 07:40:39,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:39,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 5063 transitions. [2022-01-10 07:40:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:39,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:39,066 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] [2022-01-10 07:40:39,089 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 07:40:39,283 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 07:40:39,284 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2054518207, now seen corresponding path program 1 times [2022-01-10 07:40:39,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:39,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342414545] [2022-01-10 07:40:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:39,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:39,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:39,300 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 07:40:39,363 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 07:40:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:39,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:40:39,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:39,655 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 07:40:39,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:39,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342414545] [2022-01-10 07:40:39,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342414545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:39,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:39,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:39,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523923400] [2022-01-10 07:40:39,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:39,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:39,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:39,659 INFO L87 Difference]: Start difference. First operand 3017 states and 5063 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:40,047 INFO L93 Difference]: Finished difference Result 4016 states and 6313 transitions. [2022-01-10 07:40:40,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 07:40:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:40,054 INFO L225 Difference]: With dead ends: 4016 [2022-01-10 07:40:40,055 INFO L226 Difference]: Without dead ends: 3133 [2022-01-10 07:40:40,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 07:40:40,057 INFO L933 BasicCegarLoop]: 4224 mSDtfsCounter, 4304 mSDsluCounter, 8198 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 12422 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:40,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 12422 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2022-01-10 07:40:40,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3105. [2022-01-10 07:40:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 3025 states have (on average 1.672396694214876) internal successors, (5059), 3028 states have internal predecessors, (5059), 43 states have call successors, (43), 34 states have call predecessors, (43), 35 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:40:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 5146 transitions. [2022-01-10 07:40:40,154 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 5146 transitions. Word has length 101 [2022-01-10 07:40:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:40,154 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 5146 transitions. [2022-01-10 07:40:40,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 5146 transitions. [2022-01-10 07:40:40,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:40:40,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:40,155 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] [2022-01-10 07:40:40,164 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 07:40:40,364 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 07:40:40,365 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:40,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:40,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1817747263, now seen corresponding path program 1 times [2022-01-10 07:40:40,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:40,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534684203] [2022-01-10 07:40:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:40,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:40,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:40,367 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 07:40:40,410 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 07:40:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:40,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:40:40,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:40,667 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 07:40:40,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:40,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:40,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534684203] [2022-01-10 07:40:40,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534684203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:40,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:40,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:40:40,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200965124] [2022-01-10 07:40:40,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:40,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:40:40,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:40:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:40,669 INFO L87 Difference]: Start difference. First operand 3105 states and 5146 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:40:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:40,756 INFO L93 Difference]: Finished difference Result 5016 states and 7469 transitions. [2022-01-10 07:40:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:40:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 101 [2022-01-10 07:40:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:40,763 INFO L225 Difference]: With dead ends: 5016 [2022-01-10 07:40:40,763 INFO L226 Difference]: Without dead ends: 4046 [2022-01-10 07:40:40,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 07:40:40,765 INFO L933 BasicCegarLoop]: 4280 mSDtfsCounter, 4123 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4123 SdHoareTripleChecker+Valid, 4523 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 07:40:40,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4123 Valid, 4523 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2022-01-10 07:40:40,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 4044. [2022-01-10 07:40:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 3890 states have (on average 1.565809768637532) internal successors, (6091), 3896 states have internal predecessors, (6091), 82 states have call successors, (82), 68 states have call predecessors, (82), 70 states have return successors, (84), 80 states have call predecessors, (84), 82 states have call successors, (84) [2022-01-10 07:40:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 6257 transitions. [2022-01-10 07:40:40,855 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 6257 transitions. Word has length 101 [2022-01-10 07:40:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:40,856 INFO L470 AbstractCegarLoop]: Abstraction has 4044 states and 6257 transitions. [2022-01-10 07:40:40,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:40:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 6257 transitions. [2022-01-10 07:40:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 07:40:40,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:40,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:40,865 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 07:40:41,064 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 07:40:41,065 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:41,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1099339233, now seen corresponding path program 1 times [2022-01-10 07:40:41,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:41,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966178825] [2022-01-10 07:40:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:41,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:41,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:41,080 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 07:40:41,081 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 07:40:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:41,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:40:41,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:40:41,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:41,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:41,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966178825] [2022-01-10 07:40:41,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966178825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:41,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:41,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:41,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460844389] [2022-01-10 07:40:41,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:41,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:40:41,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:41,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:40:41,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:40:41,430 INFO L87 Difference]: Start difference. First operand 4044 states and 6257 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 07:40:41,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:41,831 INFO L93 Difference]: Finished difference Result 7746 states and 10681 transitions. [2022-01-10 07:40:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:41,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 164 [2022-01-10 07:40:41,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:41,844 INFO L225 Difference]: With dead ends: 7746 [2022-01-10 07:40:41,844 INFO L226 Difference]: Without dead ends: 5838 [2022-01-10 07:40:41,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 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 07:40:41,849 INFO L933 BasicCegarLoop]: 4336 mSDtfsCounter, 4286 mSDsluCounter, 4396 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4292 SdHoareTripleChecker+Valid, 8732 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:41,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4292 Valid, 8732 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2022-01-10 07:40:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 5836. [2022-01-10 07:40:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5836 states, 5539 states have (on average 1.4535114641632063) internal successors, (8051), 5554 states have internal predecessors, (8051), 155 states have call successors, (155), 128 states have call predecessors, (155), 140 states have return successors, (179), 155 states have call predecessors, (179), 155 states have call successors, (179) [2022-01-10 07:40:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5836 states to 5836 states and 8385 transitions. [2022-01-10 07:40:42,043 INFO L78 Accepts]: Start accepts. Automaton has 5836 states and 8385 transitions. Word has length 164 [2022-01-10 07:40:42,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:42,043 INFO L470 AbstractCegarLoop]: Abstraction has 5836 states and 8385 transitions. [2022-01-10 07:40:42,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 07:40:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5836 states and 8385 transitions. [2022-01-10 07:40:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 07:40:42,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:42,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:42,055 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 07:40:42,255 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 07:40:42,255 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash -670132381, now seen corresponding path program 1 times [2022-01-10 07:40:42,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:42,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655134803] [2022-01-10 07:40:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:42,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:42,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:42,258 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 07:40:42,290 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 07:40:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:42,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:40:42,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:40:42,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:42,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:42,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655134803] [2022-01-10 07:40:42,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655134803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:42,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:42,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:40:42,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728234241] [2022-01-10 07:40:42,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:42,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:40:42,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:42,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:40:42,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:42,525 INFO L87 Difference]: Start difference. First operand 5836 states and 8385 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:40:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:42,683 INFO L93 Difference]: Finished difference Result 9528 states and 12774 transitions. [2022-01-10 07:40:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:40:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 164 [2022-01-10 07:40:42,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:42,693 INFO L225 Difference]: With dead ends: 9528 [2022-01-10 07:40:42,694 INFO L226 Difference]: Without dead ends: 5828 [2022-01-10 07:40:42,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 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 07:40:42,700 INFO L933 BasicCegarLoop]: 4230 mSDtfsCounter, 265 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 8188 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 07:40:42,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 8188 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:42,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2022-01-10 07:40:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5828. [2022-01-10 07:40:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 5534 states have (on average 1.453198409830141) internal successors, (8042), 5548 states have internal predecessors, (8042), 152 states have call successors, (152), 128 states have call predecessors, (152), 140 states have return successors, (176), 152 states have call predecessors, (176), 152 states have call successors, (176) [2022-01-10 07:40:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8370 transitions. [2022-01-10 07:40:42,879 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8370 transitions. Word has length 164 [2022-01-10 07:40:42,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:42,880 INFO L470 AbstractCegarLoop]: Abstraction has 5828 states and 8370 transitions. [2022-01-10 07:40:42,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:40:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8370 transitions. [2022-01-10 07:40:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 07:40:42,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:42,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:42,892 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 07:40:43,090 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 07:40:43,091 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:43,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:43,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1139784276, now seen corresponding path program 1 times [2022-01-10 07:40:43,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:43,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528400135] [2022-01-10 07:40:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:43,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:43,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:43,093 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 07:40:43,094 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 07:40:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:43,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:40:43,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:40:43,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:43,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:43,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528400135] [2022-01-10 07:40:43,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528400135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:43,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:43,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:43,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954870739] [2022-01-10 07:40:43,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:43,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:40:43,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:40:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:40:43,480 INFO L87 Difference]: Start difference. First operand 5828 states and 8370 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 07:40:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:43,923 INFO L93 Difference]: Finished difference Result 12839 states and 16716 transitions. [2022-01-10 07:40:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:43,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 165 [2022-01-10 07:40:43,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:43,941 INFO L225 Difference]: With dead ends: 12839 [2022-01-10 07:40:43,941 INFO L226 Difference]: Without dead ends: 9147 [2022-01-10 07:40:43,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 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 07:40:43,950 INFO L933 BasicCegarLoop]: 4319 mSDtfsCounter, 4281 mSDsluCounter, 4373 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4287 SdHoareTripleChecker+Valid, 8692 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:43,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4287 Valid, 8692 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:40:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9147 states. [2022-01-10 07:40:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9147 to 9145. [2022-01-10 07:40:44,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9145 states, 8584 states have (on average 1.3583410997204102) internal successors, (11660), 8615 states have internal predecessors, (11660), 287 states have call successors, (287), 240 states have call predecessors, (287), 272 states have return successors, (355), 291 states have call predecessors, (355), 287 states have call successors, (355) [2022-01-10 07:40:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9145 states to 9145 states and 12302 transitions. [2022-01-10 07:40:44,388 INFO L78 Accepts]: Start accepts. Automaton has 9145 states and 12302 transitions. Word has length 165 [2022-01-10 07:40:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:44,388 INFO L470 AbstractCegarLoop]: Abstraction has 9145 states and 12302 transitions. [2022-01-10 07:40:44,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 07:40:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 9145 states and 12302 transitions. [2022-01-10 07:40:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 07:40:44,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:44,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:44,415 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 07:40:44,601 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 07:40:44,601 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:44,601 INFO L85 PathProgramCache]: Analyzing trace with hash -629687338, now seen corresponding path program 1 times [2022-01-10 07:40:44,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:44,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957085060] [2022-01-10 07:40:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:44,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:44,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:44,603 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 07:40:44,604 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 07:40:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:44,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:40:44,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:40:44,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:44,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:44,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957085060] [2022-01-10 07:40:44,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957085060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:44,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:44,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:40:44,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476129303] [2022-01-10 07:40:44,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:44,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:40:44,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:44,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:40:44,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:44,901 INFO L87 Difference]: Start difference. First operand 9145 states and 12302 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 07:40:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:45,196 INFO L93 Difference]: Finished difference Result 16147 states and 20611 transitions. [2022-01-10 07:40:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:40:45,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 165 [2022-01-10 07:40:45,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:45,213 INFO L225 Difference]: With dead ends: 16147 [2022-01-10 07:40:45,213 INFO L226 Difference]: Without dead ends: 9138 [2022-01-10 07:40:45,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 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 07:40:45,224 INFO L933 BasicCegarLoop]: 4229 mSDtfsCounter, 263 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 8187 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 07:40:45,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 8187 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:45,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9138 states. [2022-01-10 07:40:45,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9138 to 9138. [2022-01-10 07:40:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9138 states, 8580 states have (on average 1.3581585081585081) internal successors, (11653), 8610 states have internal predecessors, (11653), 284 states have call successors, (284), 240 states have call predecessors, (284), 272 states have return successors, (352), 288 states have call predecessors, (352), 284 states have call successors, (352) [2022-01-10 07:40:45,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9138 states to 9138 states and 12289 transitions. [2022-01-10 07:40:45,554 INFO L78 Accepts]: Start accepts. Automaton has 9138 states and 12289 transitions. Word has length 165 [2022-01-10 07:40:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:45,555 INFO L470 AbstractCegarLoop]: Abstraction has 9138 states and 12289 transitions. [2022-01-10 07:40:45,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 07:40:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 9138 states and 12289 transitions. [2022-01-10 07:40:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 07:40:45,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:45,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:45,579 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 07:40:45,767 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 07:40:45,768 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:45,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1506626749, now seen corresponding path program 1 times [2022-01-10 07:40:45,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:45,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436185996] [2022-01-10 07:40:45,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:45,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:45,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:45,770 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 07:40:45,771 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 07:40:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:45,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:40:45,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:40:46,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:46,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:46,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436185996] [2022-01-10 07:40:46,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436185996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:46,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:46,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:46,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791352599] [2022-01-10 07:40:46,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:46,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:40:46,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:46,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:40:46,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:40:46,117 INFO L87 Difference]: Start difference. First operand 9138 states and 12289 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 07:40:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:46,847 INFO L93 Difference]: Finished difference Result 22390 states and 28027 transitions. [2022-01-10 07:40:46,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:46,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 166 [2022-01-10 07:40:46,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:46,875 INFO L225 Difference]: With dead ends: 22390 [2022-01-10 07:40:46,875 INFO L226 Difference]: Without dead ends: 15388 [2022-01-10 07:40:46,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 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 07:40:46,889 INFO L933 BasicCegarLoop]: 4227 mSDtfsCounter, 4286 mSDsluCounter, 4283 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4292 SdHoareTripleChecker+Valid, 8510 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:46,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4292 Valid, 8510 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15388 states. [2022-01-10 07:40:47,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15388 to 15386. [2022-01-10 07:40:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15386 states, 14324 states have (on average 1.2885367215861492) internal successors, (18457), 14390 states have internal predecessors, (18457), 532 states have call successors, (532), 448 states have call predecessors, (532), 528 states have return successors, (696), 548 states have call predecessors, (696), 532 states have call successors, (696) [2022-01-10 07:40:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15386 states to 15386 states and 19685 transitions. [2022-01-10 07:40:47,607 INFO L78 Accepts]: Start accepts. Automaton has 15386 states and 19685 transitions. Word has length 166 [2022-01-10 07:40:47,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:47,607 INFO L470 AbstractCegarLoop]: Abstraction has 15386 states and 19685 transitions. [2022-01-10 07:40:47,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 07:40:47,608 INFO L276 IsEmpty]: Start isEmpty. Operand 15386 states and 19685 transitions. [2022-01-10 07:40:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:40:47,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:47,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:47,635 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 07:40:47,821 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 07:40:47,821 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:47,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:47,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1281695880, now seen corresponding path program 1 times [2022-01-10 07:40:47,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:47,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313314525] [2022-01-10 07:40:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:47,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:47,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:47,823 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 07:40:47,824 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 07:40:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:47,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:40:47,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:40:48,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:48,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:48,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313314525] [2022-01-10 07:40:48,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313314525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:48,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:48,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:48,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64640327] [2022-01-10 07:40:48,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:48,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:40:48,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:48,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:40:48,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:40:48,252 INFO L87 Difference]: Start difference. First operand 15386 states and 19685 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 07:40:49,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:49,656 INFO L93 Difference]: Finished difference Result 42431 states and 51585 transitions. [2022-01-10 07:40:49,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:49,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 167 [2022-01-10 07:40:49,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:49,745 INFO L225 Difference]: With dead ends: 42431 [2022-01-10 07:40:49,745 INFO L226 Difference]: Without dead ends: 29181 [2022-01-10 07:40:49,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 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 07:40:49,784 INFO L933 BasicCegarLoop]: 4308 mSDtfsCounter, 4278 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4284 SdHoareTripleChecker+Valid, 8640 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:49,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4284 Valid, 8640 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29181 states. [2022-01-10 07:40:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29181 to 28635. [2022-01-10 07:40:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28635 states, 26322 states have (on average 1.235316465314186) internal successors, (32516), 26629 states have internal predecessors, (32516), 999 states have call successors, (999), 832 states have call predecessors, (999), 1312 states have return successors, (1676), 1175 states have call predecessors, (1676), 999 states have call successors, (1676) [2022-01-10 07:40:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28635 states to 28635 states and 35191 transitions. [2022-01-10 07:40:51,379 INFO L78 Accepts]: Start accepts. Automaton has 28635 states and 35191 transitions. Word has length 167 [2022-01-10 07:40:51,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:51,386 INFO L470 AbstractCegarLoop]: Abstraction has 28635 states and 35191 transitions. [2022-01-10 07:40:51,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 07:40:51,386 INFO L276 IsEmpty]: Start isEmpty. Operand 28635 states and 35191 transitions. [2022-01-10 07:40:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:40:51,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:51,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:51,426 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 07:40:51,618 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 07:40:51,618 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:51,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1243799802, now seen corresponding path program 1 times [2022-01-10 07:40:51,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:51,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079272823] [2022-01-10 07:40:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:51,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:51,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:51,620 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 07:40:51,622 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 07:40:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:51,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:40:51,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:40:51,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:51,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:51,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079272823] [2022-01-10 07:40:51,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079272823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:51,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:51,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:40:51,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265629001] [2022-01-10 07:40:51,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:51,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:40:51,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:51,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:40:51,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:51,892 INFO L87 Difference]: Start difference. First operand 28635 states and 35191 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 07:40:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:53,195 INFO L93 Difference]: Finished difference Result 55130 states and 66394 transitions. [2022-01-10 07:40:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:40:53,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 167 [2022-01-10 07:40:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:53,254 INFO L225 Difference]: With dead ends: 55130 [2022-01-10 07:40:53,254 INFO L226 Difference]: Without dead ends: 28630 [2022-01-10 07:40:53,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 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 07:40:53,291 INFO L933 BasicCegarLoop]: 4228 mSDtfsCounter, 260 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 8186 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 07:40:53,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 8186 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:53,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2022-01-10 07:40:54,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 28630. [2022-01-10 07:40:54,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28630 states, 26320 states have (on average 1.235258358662614) internal successors, (32512), 26626 states have internal predecessors, (32512), 996 states have call successors, (996), 832 states have call predecessors, (996), 1312 states have return successors, (1672), 1172 states have call predecessors, (1672), 996 states have call successors, (1672) [2022-01-10 07:40:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28630 states to 28630 states and 35180 transitions. [2022-01-10 07:40:54,855 INFO L78 Accepts]: Start accepts. Automaton has 28630 states and 35180 transitions. Word has length 167 [2022-01-10 07:40:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:54,855 INFO L470 AbstractCegarLoop]: Abstraction has 28630 states and 35180 transitions. [2022-01-10 07:40:54,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 07:40:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 28630 states and 35180 transitions. [2022-01-10 07:40:54,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:40:54,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:54,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:54,872 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 07:40:55,072 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 07:40:55,073 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:55,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:55,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2000045159, now seen corresponding path program 1 times [2022-01-10 07:40:55,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:55,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798604244] [2022-01-10 07:40:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:55,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:55,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:55,075 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 07:40:55,076 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 07:40:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:55,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:40:55,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:40:55,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:55,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:55,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798604244] [2022-01-10 07:40:55,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798604244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:55,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:55,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:55,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282287116] [2022-01-10 07:40:55,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:55,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:40:55,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:55,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:40:55,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:40:55,444 INFO L87 Difference]: Start difference. First operand 28630 states and 35180 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 07:40:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:57,926 INFO L93 Difference]: Finished difference Result 77750 states and 93037 transitions. [2022-01-10 07:40:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:57,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 168 [2022-01-10 07:40:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:58,108 INFO L225 Difference]: With dead ends: 77750 [2022-01-10 07:40:58,108 INFO L226 Difference]: Without dead ends: 51256 [2022-01-10 07:40:58,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 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 07:40:58,140 INFO L933 BasicCegarLoop]: 4281 mSDtfsCounter, 4260 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4266 SdHoareTripleChecker+Valid, 8586 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:58,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4266 Valid, 8586 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:40:58,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51256 states. [2022-01-10 07:41:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51256 to 51254. [2022-01-10 07:41:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51254 states, 46893 states have (on average 1.2083893118375877) internal successors, (56665), 47504 states have internal predecessors, (56665), 1863 states have call successors, (1863), 1536 states have call predecessors, (1863), 2496 states have return successors, (3227), 2215 states have call predecessors, (3227), 1863 states have call successors, (3227) [2022-01-10 07:41:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51254 states to 51254 states and 61755 transitions. [2022-01-10 07:41:00,850 INFO L78 Accepts]: Start accepts. Automaton has 51254 states and 61755 transitions. Word has length 168 [2022-01-10 07:41:00,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:41:00,850 INFO L470 AbstractCegarLoop]: Abstraction has 51254 states and 61755 transitions. [2022-01-10 07:41:00,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 07:41:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 51254 states and 61755 transitions. [2022-01-10 07:41:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:41:00,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:41:00,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:00,877 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 07:41:01,077 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 07:41:01,077 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:41:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:41:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash 525450523, now seen corresponding path program 1 times [2022-01-10 07:41:01,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:41:01,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760146461] [2022-01-10 07:41:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:41:01,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:41:01,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:41:01,194 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 07:41:01,219 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 07:41:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:41:01,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:41:01,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:41:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:41:01,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:41:01,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:41:01,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760146461] [2022-01-10 07:41:01,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760146461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:41:01,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:41:01,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:41:01,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996247849] [2022-01-10 07:41:01,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:41:01,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:41:01,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:41:01,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:41:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:41:01,515 INFO L87 Difference]: Start difference. First operand 51254 states and 61755 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 07:41:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:41:04,196 INFO L93 Difference]: Finished difference Result 100368 states and 119524 transitions. [2022-01-10 07:41:04,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:41:04,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 168 [2022-01-10 07:41:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:41:04,339 INFO L225 Difference]: With dead ends: 100368 [2022-01-10 07:41:04,339 INFO L226 Difference]: Without dead ends: 51250 [2022-01-10 07:41:04,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 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 07:41:04,399 INFO L933 BasicCegarLoop]: 4227 mSDtfsCounter, 258 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 8185 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 07:41:04,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 8185 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:41:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51250 states. [2022-01-10 07:41:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51250 to 51250. [2022-01-10 07:41:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51250 states, 46892 states have (on average 1.2083724302652905) internal successors, (56663), 47502 states have internal predecessors, (56663), 1860 states have call successors, (1860), 1536 states have call predecessors, (1860), 2496 states have return successors, (3224), 2212 states have call predecessors, (3224), 1860 states have call successors, (3224) [2022-01-10 07:41:07,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51250 states to 51250 states and 61747 transitions. [2022-01-10 07:41:07,407 INFO L78 Accepts]: Start accepts. Automaton has 51250 states and 61747 transitions. Word has length 168 [2022-01-10 07:41:07,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:41:07,407 INFO L470 AbstractCegarLoop]: Abstraction has 51250 states and 61747 transitions. [2022-01-10 07:41:07,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 07:41:07,408 INFO L276 IsEmpty]: Start isEmpty. Operand 51250 states and 61747 transitions. [2022-01-10 07:41:07,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-10 07:41:07,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:41:07,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:07,433 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 07:41:07,631 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 07:41:07,631 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:41:07,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:41:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 386755740, now seen corresponding path program 1 times [2022-01-10 07:41:07,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:41:07,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981225431] [2022-01-10 07:41:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:41:07,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:41:07,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:41:07,633 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 07:41:07,635 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 07:41:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:41:07,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:41:07,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:41:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:41:07,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:41:07,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:41:07,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981225431] [2022-01-10 07:41:07,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981225431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:41:07,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:41:07,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:41:07,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182243418] [2022-01-10 07:41:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:41:07,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:41:07,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:41:07,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:41:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:41:07,945 INFO L87 Difference]: Start difference. First operand 51250 states and 61747 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 07:41:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:41:12,200 INFO L93 Difference]: Finished difference Result 139149 states and 165616 transitions. [2022-01-10 07:41:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:41:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 169 [2022-01-10 07:41:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:41:12,370 INFO L225 Difference]: With dead ends: 139149 [2022-01-10 07:41:12,370 INFO L226 Difference]: Without dead ends: 70798 [2022-01-10 07:41:12,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 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 07:41:12,561 INFO L933 BasicCegarLoop]: 4463 mSDtfsCounter, 224 mSDsluCounter, 4219 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 8682 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:41:12,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 8682 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:41:12,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70798 states. [2022-01-10 07:41:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70798 to 70798. [2022-01-10 07:41:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70798 states, 64680 states have (on average 1.1985157699443414) internal successors, (77520), 65482 states have internal predecessors, (77520), 2660 states have call successors, (2660), 2176 states have call predecessors, (2660), 3456 states have return successors, (4642), 3140 states have call predecessors, (4642), 2660 states have call successors, (4642) [2022-01-10 07:41:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70798 states to 70798 states and 84822 transitions. [2022-01-10 07:41:16,295 INFO L78 Accepts]: Start accepts. Automaton has 70798 states and 84822 transitions. Word has length 169 [2022-01-10 07:41:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:41:16,296 INFO L470 AbstractCegarLoop]: Abstraction has 70798 states and 84822 transitions. [2022-01-10 07:41:16,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 07:41:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 70798 states and 84822 transitions. [2022-01-10 07:41:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-10 07:41:16,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:41:16,327 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:16,334 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 07:41:16,534 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 07:41:16,534 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:41:16,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:41:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1123867177, now seen corresponding path program 1 times [2022-01-10 07:41:16,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:41:16,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768363793] [2022-01-10 07:41:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:41:16,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:41:16,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:41:16,536 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 07:41:16,537 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 07:41:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:41:16,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:41:16,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:41:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:41:16,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:41:16,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:41:16,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768363793] [2022-01-10 07:41:16,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768363793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:41:16,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:41:16,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:41:16,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148477390] [2022-01-10 07:41:16,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:41:16,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:41:16,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:41:16,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:41:16,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:41:16,943 INFO L87 Difference]: Start difference. First operand 70798 states and 84822 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:41:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:41:21,317 INFO L93 Difference]: Finished difference Result 159185 states and 189546 transitions. [2022-01-10 07:41:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:41:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 218 [2022-01-10 07:41:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:41:21,562 INFO L225 Difference]: With dead ends: 159185 [2022-01-10 07:41:21,562 INFO L226 Difference]: Without dead ends: 90522 [2022-01-10 07:41:21,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 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 07:41:21,652 INFO L933 BasicCegarLoop]: 4241 mSDtfsCounter, 4087 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4484 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 07:41:21,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4087 Valid, 4484 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:41:21,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90522 states.