/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_label49+token_ring.12.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:52:44,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:52:44,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:52:44,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:52:44,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:52:44,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:52:44,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:52:44,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:52:44,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:52:44,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:52:44,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:52:44,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:52:44,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:52:44,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:52:44,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:52:44,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:52:44,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:52:44,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:52:44,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:52:44,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:52:44,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:52:44,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:52:44,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:52:44,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:52:44,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:52:44,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:52:44,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:52:44,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:52:44,605 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 07:52:44,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:52:44,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:52:44,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:52:44,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:52:44,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:52:44,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:52:44,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:52:44,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:52:44,629 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:52:44,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:52:44,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:52:44,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:52:44,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:52:44,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:52:44,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:52:44,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:52:44,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:52:44,630 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:52:44,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:52:44,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:52:44,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:52:44,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:52:44,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:52:44,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:52:44,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:52:44,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:52:44,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:52:44,631 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:52:44,631 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:52:44,631 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:52:44,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:52:44,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:52:44,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:52:44,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:52:44,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:52:44,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:52:44,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:52:44,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:52:44,842 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:52:44,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.12.cil-1.c [2022-01-10 07:52:44,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c8919426/b46c9df457144ec3b5eb8e5c0b229453/FLAG6b3816c50 [2022-01-10 07:52:45,584 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:52:45,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.12.cil-1.c [2022-01-10 07:52:45,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c8919426/b46c9df457144ec3b5eb8e5c0b229453/FLAG6b3816c50 [2022-01-10 07:52:45,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c8919426/b46c9df457144ec3b5eb8e5c0b229453 [2022-01-10 07:52:45,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:52:45,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:52:45,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:52:45,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:52:45,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:52:45,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:52:45" (1/1) ... [2022-01-10 07:52:45,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e44adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:45, skipping insertion in model container [2022-01-10 07:52:45,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:52:45" (1/1) ... [2022-01-10 07:52:45,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:52:46,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:52:47,426 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_label49+token_ring.12.cil-1.c[380593,380606] [2022-01-10 07:52:47,449 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_label49+token_ring.12.cil-1.c[383339,383352] [2022-01-10 07:52:47,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:52:47,701 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:52:48,300 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_label49+token_ring.12.cil-1.c[380593,380606] [2022-01-10 07:52:48,305 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_label49+token_ring.12.cil-1.c[383339,383352] [2022-01-10 07:52:48,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:52:48,379 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:52:48,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48 WrapperNode [2022-01-10 07:52:48,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:52:48,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:52:48,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:52:48,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:52:48,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (1/1) ... [2022-01-10 07:52:48,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (1/1) ... [2022-01-10 07:52:48,716 INFO L137 Inliner]: procedures = 69, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13161 [2022-01-10 07:52:48,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:52:48,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:52:48,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:52:48,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:52:48,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (1/1) ... [2022-01-10 07:52:48,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (1/1) ... [2022-01-10 07:52:48,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (1/1) ... [2022-01-10 07:52:48,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (1/1) ... [2022-01-10 07:52:49,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (1/1) ... [2022-01-10 07:52:49,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (1/1) ... [2022-01-10 07:52:49,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (1/1) ... [2022-01-10 07:52:49,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:52:49,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:52:49,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:52:49,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:52:49,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (1/1) ... [2022-01-10 07:52:49,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:52:49,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:52:49,193 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 07:52:49,215 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 07:52:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:52:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:52:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:52:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:52:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:52:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:52:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:52:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:52:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 07:52:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 07:52:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:52:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:52:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:52:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:52:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:52:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:52:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:52:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:52:49,371 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:52:49,380 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:52:56,577 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:52:56,604 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:52:56,604 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-01-10 07:52:56,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:52:56 BoogieIcfgContainer [2022-01-10 07:52:56,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:52:56,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:52:56,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:52:56,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:52:56,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:52:45" (1/3) ... [2022-01-10 07:52:56,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688f52f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:52:56, skipping insertion in model container [2022-01-10 07:52:56,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:52:48" (2/3) ... [2022-01-10 07:52:56,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688f52f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:52:56, skipping insertion in model container [2022-01-10 07:52:56,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:52:56" (3/3) ... [2022-01-10 07:52:56,617 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.12.cil-1.c [2022-01-10 07:52:56,621 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:52:56,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:52:56,670 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:52:56,676 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 07:52:56,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:52:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-10 07:52:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:52:56,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:52:56,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:56,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:52:56,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:52:56,739 INFO L85 PathProgramCache]: Analyzing trace with hash -354915978, now seen corresponding path program 1 times [2022-01-10 07:52:56,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:52:56,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037180289] [2022-01-10 07:52:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:52:56,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:52:56,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:52:56,754 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 07:52:56,755 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 07:52:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:52:56,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:52:56,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:52:57,220 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 07:52:57,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:52:57,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:52:57,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037180289] [2022-01-10 07:52:57,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037180289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:52:57,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:52:57,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:52:57,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624576529] [2022-01-10 07:52:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:52:57,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:52:57,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:52:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:52:57,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:52:57,248 INFO L87 Difference]: Start difference. First operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:52:57,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:52:57,384 INFO L93 Difference]: Finished difference Result 5139 states and 9447 transitions. [2022-01-10 07:52:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:52:57,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:52:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:52:57,410 INFO L225 Difference]: With dead ends: 5139 [2022-01-10 07:52:57,410 INFO L226 Difference]: Without dead ends: 2505 [2022-01-10 07:52:57,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 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 07:52:57,419 INFO L933 BasicCegarLoop]: 4632 mSDtfsCounter, 603 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 8654 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 07:52:57,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 8654 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:52:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2022-01-10 07:52:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2505. [2022-01-10 07:52:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8266504657756177) internal successors, (4510), 2472 states have internal predecessors, (4510), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:52:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4564 transitions. [2022-01-10 07:52:57,552 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4564 transitions. Word has length 179 [2022-01-10 07:52:57,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:52:57,553 INFO L470 AbstractCegarLoop]: Abstraction has 2505 states and 4564 transitions. [2022-01-10 07:52:57,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:52:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4564 transitions. [2022-01-10 07:52:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:52:57,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:52:57,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:57,572 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 07:52:57,772 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 07:52:57,774 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:52:57,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:52:57,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1148182328, now seen corresponding path program 1 times [2022-01-10 07:52:57,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:52:57,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165318600] [2022-01-10 07:52:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:52:57,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:52:57,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:52:57,792 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 07:52:57,804 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 07:52:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:52:57,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:52:57,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:52:58,229 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 07:52:58,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:52:58,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:52:58,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165318600] [2022-01-10 07:52:58,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165318600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:52:58,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:52:58,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:52:58,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479604237] [2022-01-10 07:52:58,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:52:58,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:52:58,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:52:58,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:52:58,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:52:58,237 INFO L87 Difference]: Start difference. First operand 2505 states and 4564 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:52:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:52:58,305 INFO L93 Difference]: Finished difference Result 2874 states and 5145 transitions. [2022-01-10 07:52:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:52:58,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:52:58,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:52:58,319 INFO L225 Difference]: With dead ends: 2874 [2022-01-10 07:52:58,319 INFO L226 Difference]: Without dead ends: 2505 [2022-01-10 07:52:58,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 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 07:52:58,322 INFO L933 BasicCegarLoop]: 4562 mSDtfsCounter, 589 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 8520 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 07:52:58,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 8520 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:52:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2022-01-10 07:52:58,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2505. [2022-01-10 07:52:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8262454434993924) internal successors, (4509), 2472 states have internal predecessors, (4509), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:52:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4563 transitions. [2022-01-10 07:52:58,524 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4563 transitions. Word has length 179 [2022-01-10 07:52:58,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:52:58,525 INFO L470 AbstractCegarLoop]: Abstraction has 2505 states and 4563 transitions. [2022-01-10 07:52:58,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:52:58,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4563 transitions. [2022-01-10 07:52:58,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:52:58,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:52:58,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:58,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 07:52:58,735 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 07:52:58,735 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:52:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:52:58,736 INFO L85 PathProgramCache]: Analyzing trace with hash 577910522, now seen corresponding path program 1 times [2022-01-10 07:52:58,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:52:58,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868240855] [2022-01-10 07:52:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:52:58,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:52:58,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:52:58,738 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 07:52:58,740 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 07:52:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:52:58,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:52:58,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:52:59,255 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 07:52:59,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:52:59,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:52:59,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868240855] [2022-01-10 07:52:59,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868240855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:52:59,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:52:59,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:52:59,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038307826] [2022-01-10 07:52:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:52:59,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:52:59,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:52:59,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:52:59,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:52:59,265 INFO L87 Difference]: Start difference. First operand 2505 states and 4563 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:52:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:52:59,989 INFO L93 Difference]: Finished difference Result 3281 states and 5805 transitions. [2022-01-10 07:52:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:52:59,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:52:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:00,000 INFO L225 Difference]: With dead ends: 3281 [2022-01-10 07:53:00,000 INFO L226 Difference]: Without dead ends: 2917 [2022-01-10 07:53:00,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:00,003 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 5118 mSDsluCounter, 9124 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5138 SdHoareTripleChecker+Valid, 13737 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:00,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5138 Valid, 13737 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 07:53:00,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-01-10 07:53:00,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2886. [2022-01-10 07:53:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7983699503897945) internal successors, (5075), 2826 states have internal predecessors, (5075), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5172 transitions. [2022-01-10 07:53:00,059 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5172 transitions. Word has length 179 [2022-01-10 07:53:00,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:00,060 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5172 transitions. [2022-01-10 07:53:00,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:00,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5172 transitions. [2022-01-10 07:53:00,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:00,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:00,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:00,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:00,270 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 07:53:00,271 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:00,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:00,271 INFO L85 PathProgramCache]: Analyzing trace with hash -807829258, now seen corresponding path program 1 times [2022-01-10 07:53:00,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:00,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652104995] [2022-01-10 07:53:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:00,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:00,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:00,273 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 07:53:00,319 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 07:53:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:00,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:00,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:53:00,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:00,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:00,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652104995] [2022-01-10 07:53:00,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652104995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:00,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:00,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:00,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266253377] [2022-01-10 07:53:00,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:00,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:00,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:00,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:00,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:00,640 INFO L87 Difference]: Start difference. First operand 2886 states and 5172 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:00,999 INFO L93 Difference]: Finished difference Result 3631 states and 6360 transitions. [2022-01-10 07:53:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:01,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:01,009 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 07:53:01,009 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 07:53:01,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:01,012 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4778 mSDsluCounter, 8577 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4798 SdHoareTripleChecker+Valid, 13108 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:01,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4798 Valid, 13108 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 07:53:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2022-01-10 07:53:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7958894401133947) internal successors, (5068), 2826 states have internal predecessors, (5068), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5165 transitions. [2022-01-10 07:53:01,103 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5165 transitions. Word has length 179 [2022-01-10 07:53:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:01,103 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5165 transitions. [2022-01-10 07:53:01,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:01,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5165 transitions. [2022-01-10 07:53:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:01,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:01,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:01,115 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 07:53:01,313 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 07:53:01,314 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:01,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:01,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1683814534, now seen corresponding path program 1 times [2022-01-10 07:53:01,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:01,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603980021] [2022-01-10 07:53:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:01,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:01,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:01,316 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 07:53:01,358 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 07:53:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:01,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:01,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:53:01,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:01,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:01,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603980021] [2022-01-10 07:53:01,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603980021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:01,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:01,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:01,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113159857] [2022-01-10 07:53:01,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:01,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:01,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:01,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:01,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:01,781 INFO L87 Difference]: Start difference. First operand 2886 states and 5165 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:02,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:02,195 INFO L93 Difference]: Finished difference Result 3631 states and 6346 transitions. [2022-01-10 07:53:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:02,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:02,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:02,203 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 07:53:02,204 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 07:53:02,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:02,206 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4772 mSDsluCounter, 8573 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4792 SdHoareTripleChecker+Valid, 13101 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:02,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4792 Valid, 13101 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 07:53:02,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2022-01-10 07:53:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.793408929836995) internal successors, (5061), 2826 states have internal predecessors, (5061), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:02,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5158 transitions. [2022-01-10 07:53:02,261 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5158 transitions. Word has length 179 [2022-01-10 07:53:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:02,262 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5158 transitions. [2022-01-10 07:53:02,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:02,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5158 transitions. [2022-01-10 07:53:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:02,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:02,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:02,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 07:53:02,476 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 07:53:02,476 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:02,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:02,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1999883704, now seen corresponding path program 1 times [2022-01-10 07:53:02,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:02,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850684665] [2022-01-10 07:53:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:02,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:02,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:02,478 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 07:53:02,480 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 07:53:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:02,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:02,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:02,840 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 07:53:02,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:02,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:02,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850684665] [2022-01-10 07:53:02,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850684665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:02,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:02,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:02,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83984928] [2022-01-10 07:53:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:02,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:02,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:02,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:02,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:02,841 INFO L87 Difference]: Start difference. First operand 2886 states and 5158 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:03,176 INFO L93 Difference]: Finished difference Result 3631 states and 6332 transitions. [2022-01-10 07:53:03,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:03,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:03,184 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 07:53:03,184 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 07:53:03,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:03,187 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 4766 mSDsluCounter, 8569 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 13094 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:03,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 13094 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 07:53:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2022-01-10 07:53:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7909284195605952) internal successors, (5054), 2826 states have internal predecessors, (5054), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5151 transitions. [2022-01-10 07:53:03,271 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5151 transitions. Word has length 179 [2022-01-10 07:53:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:03,272 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5151 transitions. [2022-01-10 07:53:03,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5151 transitions. [2022-01-10 07:53:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:03,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:03,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:03,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:03,487 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 07:53:03,488 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:03,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash -302701252, now seen corresponding path program 1 times [2022-01-10 07:53:03,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:03,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952697976] [2022-01-10 07:53:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:03,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:03,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:03,490 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 07:53:03,492 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 07:53:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:03,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:03,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:03,844 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 07:53:03,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:03,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:03,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952697976] [2022-01-10 07:53:03,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952697976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:03,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:03,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:03,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504721545] [2022-01-10 07:53:03,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:03,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:03,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:03,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:03,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:03,846 INFO L87 Difference]: Start difference. First operand 2886 states and 5151 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:04,175 INFO L93 Difference]: Finished difference Result 3631 states and 6318 transitions. [2022-01-10 07:53:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:04,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:04,186 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 07:53:04,186 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 07:53:04,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:04,190 INFO L933 BasicCegarLoop]: 4522 mSDtfsCounter, 4759 mSDsluCounter, 8565 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4779 SdHoareTripleChecker+Valid, 13087 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:04,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4779 Valid, 13087 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:04,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 07:53:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2022-01-10 07:53:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7884479092841956) internal successors, (5047), 2826 states have internal predecessors, (5047), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5144 transitions. [2022-01-10 07:53:04,239 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5144 transitions. Word has length 179 [2022-01-10 07:53:04,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:04,239 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5144 transitions. [2022-01-10 07:53:04,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5144 transitions. [2022-01-10 07:53:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:04,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:04,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:04,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 07:53:04,449 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 07:53:04,449 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1567526336, now seen corresponding path program 1 times [2022-01-10 07:53:04,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:04,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508095263] [2022-01-10 07:53:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:04,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:04,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:04,451 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 07:53:04,453 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 07:53:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:04,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:04,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:04,801 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 07:53:04,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:04,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:04,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508095263] [2022-01-10 07:53:04,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508095263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:04,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:04,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:04,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089868249] [2022-01-10 07:53:04,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:04,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:04,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:04,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:04,803 INFO L87 Difference]: Start difference. First operand 2886 states and 5144 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:05,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:05,196 INFO L93 Difference]: Finished difference Result 3631 states and 6304 transitions. [2022-01-10 07:53:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:05,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:05,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:05,213 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 07:53:05,213 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 07:53:05,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:05,217 INFO L933 BasicCegarLoop]: 4519 mSDtfsCounter, 4753 mSDsluCounter, 8561 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4773 SdHoareTripleChecker+Valid, 13080 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:05,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4773 Valid, 13080 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 07:53:05,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2022-01-10 07:53:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.785967399007796) internal successors, (5040), 2826 states have internal predecessors, (5040), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:05,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5137 transitions. [2022-01-10 07:53:05,273 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5137 transitions. Word has length 179 [2022-01-10 07:53:05,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:05,274 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5137 transitions. [2022-01-10 07:53:05,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:05,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5137 transitions. [2022-01-10 07:53:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:05,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:05,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:05,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 07:53:05,484 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 07:53:05,485 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:05,485 INFO L85 PathProgramCache]: Analyzing trace with hash -727448388, now seen corresponding path program 1 times [2022-01-10 07:53:05,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:05,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955272491] [2022-01-10 07:53:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:05,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:05,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:05,487 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 07:53:05,523 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 07:53:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:05,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:05,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:05,889 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 07:53:05,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:05,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:05,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955272491] [2022-01-10 07:53:05,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955272491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:05,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:05,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:05,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099913228] [2022-01-10 07:53:05,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:05,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:05,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:05,890 INFO L87 Difference]: Start difference. First operand 2886 states and 5137 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:06,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:06,227 INFO L93 Difference]: Finished difference Result 3631 states and 6290 transitions. [2022-01-10 07:53:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:06,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:06,235 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 07:53:06,235 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 07:53:06,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:06,238 INFO L933 BasicCegarLoop]: 4516 mSDtfsCounter, 4747 mSDsluCounter, 8557 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4767 SdHoareTripleChecker+Valid, 13073 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:06,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4767 Valid, 13073 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 07:53:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2022-01-10 07:53:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7834868887313962) internal successors, (5033), 2826 states have internal predecessors, (5033), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5130 transitions. [2022-01-10 07:53:06,287 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5130 transitions. Word has length 179 [2022-01-10 07:53:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:06,287 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5130 transitions. [2022-01-10 07:53:06,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:06,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5130 transitions. [2022-01-10 07:53:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:06,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:06,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:06,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 07:53:06,497 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 07:53:06,498 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:06,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2108014144, now seen corresponding path program 1 times [2022-01-10 07:53:06,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:06,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346985142] [2022-01-10 07:53:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:06,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:06,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:06,500 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 07:53:06,501 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 07:53:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:06,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:06,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:06,870 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 07:53:06,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:06,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:06,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346985142] [2022-01-10 07:53:06,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346985142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:06,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:06,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:06,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425751350] [2022-01-10 07:53:06,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:06,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:06,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:06,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:06,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:06,872 INFO L87 Difference]: Start difference. First operand 2886 states and 5130 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:07,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:07,273 INFO L93 Difference]: Finished difference Result 3631 states and 6276 transitions. [2022-01-10 07:53:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:07,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:07,283 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 07:53:07,283 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 07:53:07,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:07,285 INFO L933 BasicCegarLoop]: 4513 mSDtfsCounter, 4741 mSDsluCounter, 8553 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4761 SdHoareTripleChecker+Valid, 13066 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:07,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4761 Valid, 13066 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 07:53:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2022-01-10 07:53:07,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7810063784549965) internal successors, (5026), 2826 states have internal predecessors, (5026), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5123 transitions. [2022-01-10 07:53:07,338 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5123 transitions. Word has length 179 [2022-01-10 07:53:07,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:07,338 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5123 transitions. [2022-01-10 07:53:07,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:07,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5123 transitions. [2022-01-10 07:53:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:07,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:07,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:07,368 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 07:53:07,549 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 07:53:07,549 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 814007356, now seen corresponding path program 1 times [2022-01-10 07:53:07,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:07,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233897080] [2022-01-10 07:53:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:07,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:07,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:07,551 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 07:53:07,552 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 07:53:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:07,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:07,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:07,832 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 07:53:07,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:07,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:07,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233897080] [2022-01-10 07:53:07,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233897080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:07,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:07,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:07,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708839302] [2022-01-10 07:53:07,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:07,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:07,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:07,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:07,834 INFO L87 Difference]: Start difference. First operand 2886 states and 5123 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:08,111 INFO L93 Difference]: Finished difference Result 3631 states and 6262 transitions. [2022-01-10 07:53:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:08,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:08,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:08,118 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 07:53:08,118 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 07:53:08,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:08,121 INFO L933 BasicCegarLoop]: 4510 mSDtfsCounter, 4735 mSDsluCounter, 8549 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4755 SdHoareTripleChecker+Valid, 13059 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:08,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4755 Valid, 13059 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:53:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 07:53:08,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2022-01-10 07:53:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7785258681785967) internal successors, (5019), 2826 states have internal predecessors, (5019), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5116 transitions. [2022-01-10 07:53:08,165 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5116 transitions. Word has length 179 [2022-01-10 07:53:08,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:08,166 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5116 transitions. [2022-01-10 07:53:08,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:08,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5116 transitions. [2022-01-10 07:53:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:08,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:08,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:08,176 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 07:53:08,375 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 07:53:08,376 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:08,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash -890302784, now seen corresponding path program 1 times [2022-01-10 07:53:08,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:08,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429403093] [2022-01-10 07:53:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:08,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:08,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:08,378 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 07:53:08,380 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 07:53:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:08,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:08,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:08,736 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 07:53:08,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:08,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:08,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429403093] [2022-01-10 07:53:08,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429403093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:08,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:08,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:08,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732857886] [2022-01-10 07:53:08,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:08,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:08,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:08,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:08,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:08,737 INFO L87 Difference]: Start difference. First operand 2886 states and 5116 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:09,073 INFO L93 Difference]: Finished difference Result 3631 states and 6248 transitions. [2022-01-10 07:53:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:09,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:09,090 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 07:53:09,090 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 07:53:09,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:09,093 INFO L933 BasicCegarLoop]: 4507 mSDtfsCounter, 4729 mSDsluCounter, 8545 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4749 SdHoareTripleChecker+Valid, 13052 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:09,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4749 Valid, 13052 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:09,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 07:53:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2022-01-10 07:53:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.776045357902197) internal successors, (5012), 2826 states have internal predecessors, (5012), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5109 transitions. [2022-01-10 07:53:09,160 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5109 transitions. Word has length 179 [2022-01-10 07:53:09,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:09,161 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5109 transitions. [2022-01-10 07:53:09,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:09,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5109 transitions. [2022-01-10 07:53:09,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:09,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:09,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:09,194 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 07:53:09,371 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 07:53:09,371 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2081485566, now seen corresponding path program 1 times [2022-01-10 07:53:09,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:09,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863676425] [2022-01-10 07:53:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:09,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:09,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:09,373 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 07:53:09,375 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 07:53:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:09,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:09,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:09,757 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 07:53:09,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:09,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:09,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863676425] [2022-01-10 07:53:09,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863676425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:09,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:09,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:09,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304364706] [2022-01-10 07:53:09,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:09,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:09,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:09,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:09,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:09,760 INFO L87 Difference]: Start difference. First operand 2886 states and 5109 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:10,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:10,135 INFO L93 Difference]: Finished difference Result 3631 states and 6234 transitions. [2022-01-10 07:53:10,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:10,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:10,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:10,145 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 07:53:10,145 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 07:53:10,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:10,152 INFO L933 BasicCegarLoop]: 4504 mSDtfsCounter, 4723 mSDsluCounter, 8541 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4743 SdHoareTripleChecker+Valid, 13045 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:10,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4743 Valid, 13045 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 07:53:10,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2022-01-10 07:53:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7735648476257972) internal successors, (5005), 2826 states have internal predecessors, (5005), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:53:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5102 transitions. [2022-01-10 07:53:10,218 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5102 transitions. Word has length 179 [2022-01-10 07:53:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:10,218 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5102 transitions. [2022-01-10 07:53:10,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5102 transitions. [2022-01-10 07:53:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:10,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:10,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:10,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:10,429 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 07:53:10,430 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:10,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:10,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1160507774, now seen corresponding path program 1 times [2022-01-10 07:53:10,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:10,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387794378] [2022-01-10 07:53:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:10,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:10,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:10,432 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 07:53:10,433 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 07:53:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:10,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:10,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:10,822 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 07:53:10,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:10,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:10,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387794378] [2022-01-10 07:53:10,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387794378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:10,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:10,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:10,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665085338] [2022-01-10 07:53:10,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:10,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:10,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:10,836 INFO L87 Difference]: Start difference. First operand 2886 states and 5102 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:11,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:11,356 INFO L93 Difference]: Finished difference Result 3823 states and 6518 transitions. [2022-01-10 07:53:11,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:11,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:11,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:11,363 INFO L225 Difference]: With dead ends: 3823 [2022-01-10 07:53:11,363 INFO L226 Difference]: Without dead ends: 3078 [2022-01-10 07:53:11,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:11,379 INFO L933 BasicCegarLoop]: 4501 mSDtfsCounter, 4842 mSDsluCounter, 8536 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4862 SdHoareTripleChecker+Valid, 13037 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:11,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4862 Valid, 13037 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2022-01-10 07:53:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3078. [2022-01-10 07:53:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3008 states have (on average 1.7486702127659575) internal successors, (5260), 3012 states have internal predecessors, (5260), 51 states have call successors, (51), 17 states have call predecessors, (51), 17 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:53:11,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 5361 transitions. [2022-01-10 07:53:11,486 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 5361 transitions. Word has length 179 [2022-01-10 07:53:11,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:11,486 INFO L470 AbstractCegarLoop]: Abstraction has 3078 states and 5361 transitions. [2022-01-10 07:53:11,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:11,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 5361 transitions. [2022-01-10 07:53:11,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:11,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:11,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:11,499 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 07:53:11,699 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 07:53:11,699 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:11,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -134966427, now seen corresponding path program 1 times [2022-01-10 07:53:11,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:11,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542955217] [2022-01-10 07:53:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:11,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:11,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:11,701 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 07:53:11,737 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 07:53:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:11,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:11,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:12,047 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 07:53:12,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:12,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:12,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542955217] [2022-01-10 07:53:12,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542955217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:12,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:12,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:12,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304182915] [2022-01-10 07:53:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:12,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:12,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:12,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:12,049 INFO L87 Difference]: Start difference. First operand 3078 states and 5361 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:12,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:12,569 INFO L93 Difference]: Finished difference Result 4207 states and 7036 transitions. [2022-01-10 07:53:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:12,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:12,576 INFO L225 Difference]: With dead ends: 4207 [2022-01-10 07:53:12,576 INFO L226 Difference]: Without dead ends: 3270 [2022-01-10 07:53:12,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:12,580 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 4835 mSDsluCounter, 8532 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4855 SdHoareTripleChecker+Valid, 13031 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:12,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4855 Valid, 13031 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-01-10 07:53:12,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3270. [2022-01-10 07:53:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3194 states have (on average 1.7254226675015654) internal successors, (5511), 3198 states have internal predecessors, (5511), 53 states have call successors, (53), 21 states have call predecessors, (53), 21 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:53:12,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 5616 transitions. [2022-01-10 07:53:12,660 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 5616 transitions. Word has length 179 [2022-01-10 07:53:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:12,660 INFO L470 AbstractCegarLoop]: Abstraction has 3270 states and 5616 transitions. [2022-01-10 07:53:12,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:12,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 5616 transitions. [2022-01-10 07:53:12,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:12,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:12,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:12,672 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 07:53:12,870 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 07:53:12,871 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:12,871 INFO L85 PathProgramCache]: Analyzing trace with hash -400636319, now seen corresponding path program 1 times [2022-01-10 07:53:12,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:12,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681180397] [2022-01-10 07:53:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:12,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:12,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:12,872 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 07:53:12,874 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 07:53:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:13,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:13,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:13,237 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 07:53:13,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:13,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:13,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681180397] [2022-01-10 07:53:13,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681180397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:13,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:13,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:13,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835869368] [2022-01-10 07:53:13,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:13,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:13,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:13,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:13,240 INFO L87 Difference]: Start difference. First operand 3270 states and 5616 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:13,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:13,736 INFO L93 Difference]: Finished difference Result 4591 states and 7546 transitions. [2022-01-10 07:53:13,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:13,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:13,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:13,745 INFO L225 Difference]: With dead ends: 4591 [2022-01-10 07:53:13,745 INFO L226 Difference]: Without dead ends: 3462 [2022-01-10 07:53:13,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:13,751 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 4829 mSDsluCounter, 8528 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4849 SdHoareTripleChecker+Valid, 13022 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:13,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4849 Valid, 13022 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:13,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-01-10 07:53:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3462. [2022-01-10 07:53:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3380 states have (on average 1.7035502958579882) internal successors, (5758), 3384 states have internal predecessors, (5758), 55 states have call successors, (55), 25 states have call predecessors, (55), 25 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 07:53:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5867 transitions. [2022-01-10 07:53:13,917 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5867 transitions. Word has length 179 [2022-01-10 07:53:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:13,917 INFO L470 AbstractCegarLoop]: Abstraction has 3462 states and 5867 transitions. [2022-01-10 07:53:13,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5867 transitions. [2022-01-10 07:53:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:13,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:13,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:13,973 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 07:53:14,125 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 07:53:14,125 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:14,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1595601604, now seen corresponding path program 1 times [2022-01-10 07:53:14,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:14,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832009521] [2022-01-10 07:53:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:14,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:14,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:14,127 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 07:53:14,130 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 07:53:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:14,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:14,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:14,492 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 07:53:14,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:14,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:14,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832009521] [2022-01-10 07:53:14,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832009521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:14,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:14,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:14,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481368024] [2022-01-10 07:53:14,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:14,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:14,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:14,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:14,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:14,494 INFO L87 Difference]: Start difference. First operand 3462 states and 5867 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:14,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:14,973 INFO L93 Difference]: Finished difference Result 4975 states and 8048 transitions. [2022-01-10 07:53:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:14,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:14,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:14,981 INFO L225 Difference]: With dead ends: 4975 [2022-01-10 07:53:14,981 INFO L226 Difference]: Without dead ends: 3654 [2022-01-10 07:53:14,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:14,985 INFO L933 BasicCegarLoop]: 4491 mSDtfsCounter, 4822 mSDsluCounter, 8524 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 13015 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:14,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4842 Valid, 13015 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:14,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-01-10 07:53:15,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3654. [2022-01-10 07:53:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3566 states have (on average 1.6828379136287157) internal successors, (6001), 3570 states have internal predecessors, (6001), 57 states have call successors, (57), 29 states have call predecessors, (57), 29 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 07:53:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 6114 transitions. [2022-01-10 07:53:15,069 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 6114 transitions. Word has length 179 [2022-01-10 07:53:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:15,069 INFO L470 AbstractCegarLoop]: Abstraction has 3654 states and 6114 transitions. [2022-01-10 07:53:15,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 6114 transitions. [2022-01-10 07:53:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:15,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:15,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:15,092 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 07:53:15,279 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 07:53:15,279 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:15,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1582085855, now seen corresponding path program 1 times [2022-01-10 07:53:15,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:15,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677792603] [2022-01-10 07:53:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:15,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:15,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:15,281 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 07:53:15,283 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 07:53:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:15,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:15,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:15,628 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 07:53:15,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:15,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:15,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677792603] [2022-01-10 07:53:15,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677792603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:15,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:15,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:15,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209011528] [2022-01-10 07:53:15,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:15,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:15,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:15,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:15,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:15,629 INFO L87 Difference]: Start difference. First operand 3654 states and 6114 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:16,097 INFO L93 Difference]: Finished difference Result 5359 states and 8542 transitions. [2022-01-10 07:53:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:16,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:16,105 INFO L225 Difference]: With dead ends: 5359 [2022-01-10 07:53:16,105 INFO L226 Difference]: Without dead ends: 3846 [2022-01-10 07:53:16,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:16,109 INFO L933 BasicCegarLoop]: 4488 mSDtfsCounter, 4815 mSDsluCounter, 8520 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4835 SdHoareTripleChecker+Valid, 13008 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:16,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4835 Valid, 13008 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:16,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2022-01-10 07:53:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 3846. [2022-01-10 07:53:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3752 states have (on average 1.6631130063965884) internal successors, (6240), 3756 states have internal predecessors, (6240), 59 states have call successors, (59), 33 states have call predecessors, (59), 33 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 07:53:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 6357 transitions. [2022-01-10 07:53:16,202 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 6357 transitions. Word has length 179 [2022-01-10 07:53:16,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:16,202 INFO L470 AbstractCegarLoop]: Abstraction has 3846 states and 6357 transitions. [2022-01-10 07:53:16,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:16,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 6357 transitions. [2022-01-10 07:53:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:16,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:16,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:16,229 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 07:53:16,411 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 07:53:16,412 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:16,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1180419427, now seen corresponding path program 1 times [2022-01-10 07:53:16,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:16,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409292705] [2022-01-10 07:53:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:16,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:16,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:16,428 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 07:53:16,442 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 07:53:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:16,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:16,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:16,764 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 07:53:16,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:16,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:16,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409292705] [2022-01-10 07:53:16,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409292705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:16,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:16,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:16,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723100394] [2022-01-10 07:53:16,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:16,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:16,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:16,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:16,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:16,767 INFO L87 Difference]: Start difference. First operand 3846 states and 6357 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:17,284 INFO L93 Difference]: Finished difference Result 5743 states and 9028 transitions. [2022-01-10 07:53:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:17,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:17,302 INFO L225 Difference]: With dead ends: 5743 [2022-01-10 07:53:17,302 INFO L226 Difference]: Without dead ends: 4038 [2022-01-10 07:53:17,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:17,308 INFO L933 BasicCegarLoop]: 4485 mSDtfsCounter, 4808 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 13001 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:17,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4828 Valid, 13001 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2022-01-10 07:53:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 4038. [2022-01-10 07:53:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 3938 states have (on average 1.6442356526155408) internal successors, (6475), 3942 states have internal predecessors, (6475), 61 states have call successors, (61), 37 states have call predecessors, (61), 37 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 07:53:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 6596 transitions. [2022-01-10 07:53:17,413 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 6596 transitions. Word has length 179 [2022-01-10 07:53:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:17,413 INFO L470 AbstractCegarLoop]: Abstraction has 4038 states and 6596 transitions. [2022-01-10 07:53:17,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 6596 transitions. [2022-01-10 07:53:17,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:17,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:17,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:17,425 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 07:53:17,626 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 07:53:17,626 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash -599867328, now seen corresponding path program 1 times [2022-01-10 07:53:17,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:17,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831326700] [2022-01-10 07:53:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:17,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:17,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:17,631 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 07:53:17,690 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 07:53:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:17,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:17,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:17,930 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 07:53:17,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:17,930 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:17,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831326700] [2022-01-10 07:53:17,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831326700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:17,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:17,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:17,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429064051] [2022-01-10 07:53:17,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:17,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:17,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:17,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:17,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:17,932 INFO L87 Difference]: Start difference. First operand 4038 states and 6596 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:18,415 INFO L93 Difference]: Finished difference Result 6127 states and 9506 transitions. [2022-01-10 07:53:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:18,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:18,423 INFO L225 Difference]: With dead ends: 6127 [2022-01-10 07:53:18,423 INFO L226 Difference]: Without dead ends: 4230 [2022-01-10 07:53:18,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:18,429 INFO L933 BasicCegarLoop]: 4482 mSDtfsCounter, 4801 mSDsluCounter, 8512 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4821 SdHoareTripleChecker+Valid, 12994 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:18,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4821 Valid, 12994 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2022-01-10 07:53:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 4230. [2022-01-10 07:53:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4124 states have (on average 1.6260911736178467) internal successors, (6706), 4128 states have internal predecessors, (6706), 63 states have call successors, (63), 41 states have call predecessors, (63), 41 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 07:53:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 6831 transitions. [2022-01-10 07:53:18,547 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 6831 transitions. Word has length 179 [2022-01-10 07:53:18,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:18,547 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 6831 transitions. [2022-01-10 07:53:18,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:18,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 6831 transitions. [2022-01-10 07:53:18,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:18,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:18,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:18,557 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 07:53:18,756 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 07:53:18,757 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:18,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1393008580, now seen corresponding path program 1 times [2022-01-10 07:53:18,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:18,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097839422] [2022-01-10 07:53:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:18,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:18,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:18,776 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 07:53:18,777 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 07:53:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:18,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:18,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:19,128 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 07:53:19,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:19,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:19,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097839422] [2022-01-10 07:53:19,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097839422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:19,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:19,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:19,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931411926] [2022-01-10 07:53:19,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:19,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:19,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:19,130 INFO L87 Difference]: Start difference. First operand 4230 states and 6831 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:19,675 INFO L93 Difference]: Finished difference Result 6511 states and 9976 transitions. [2022-01-10 07:53:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:19,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:19,681 INFO L225 Difference]: With dead ends: 6511 [2022-01-10 07:53:19,681 INFO L226 Difference]: Without dead ends: 4422 [2022-01-10 07:53:19,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:19,685 INFO L933 BasicCegarLoop]: 4479 mSDtfsCounter, 4793 mSDsluCounter, 8508 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 12987 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:19,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4813 Valid, 12987 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:19,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-01-10 07:53:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4422. [2022-01-10 07:53:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 4310 states have (on average 1.608584686774942) internal successors, (6933), 4314 states have internal predecessors, (6933), 65 states have call successors, (65), 45 states have call predecessors, (65), 45 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2022-01-10 07:53:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 7062 transitions. [2022-01-10 07:53:19,792 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 7062 transitions. Word has length 179 [2022-01-10 07:53:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:19,794 INFO L470 AbstractCegarLoop]: Abstraction has 4422 states and 7062 transitions. [2022-01-10 07:53:19,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 7062 transitions. [2022-01-10 07:53:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:19,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:19,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:19,815 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 07:53:20,004 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 07:53:20,005 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:20,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1362456504, now seen corresponding path program 1 times [2022-01-10 07:53:20,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:20,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426622521] [2022-01-10 07:53:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:20,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:20,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:20,029 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 07:53:20,029 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 07:53:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:20,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:20,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:20,376 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 07:53:20,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:20,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:20,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426622521] [2022-01-10 07:53:20,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426622521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:20,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:20,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:20,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406045631] [2022-01-10 07:53:20,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:20,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:20,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:20,378 INFO L87 Difference]: Start difference. First operand 4422 states and 7062 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:20,894 INFO L93 Difference]: Finished difference Result 6895 states and 10438 transitions. [2022-01-10 07:53:20,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:20,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:20,902 INFO L225 Difference]: With dead ends: 6895 [2022-01-10 07:53:20,902 INFO L226 Difference]: Without dead ends: 4614 [2022-01-10 07:53:20,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:20,908 INFO L933 BasicCegarLoop]: 4476 mSDtfsCounter, 4786 mSDsluCounter, 8504 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 12980 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:20,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4806 Valid, 12980 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:20,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4614 states. [2022-01-10 07:53:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4614 to 4614. [2022-01-10 07:53:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4614 states, 4496 states have (on average 1.5916370106761566) internal successors, (7156), 4500 states have internal predecessors, (7156), 67 states have call successors, (67), 49 states have call predecessors, (67), 49 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:53:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 7289 transitions. [2022-01-10 07:53:21,047 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 7289 transitions. Word has length 179 [2022-01-10 07:53:21,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:21,047 INFO L470 AbstractCegarLoop]: Abstraction has 4614 states and 7289 transitions. [2022-01-10 07:53:21,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 7289 transitions. [2022-01-10 07:53:21,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:21,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:21,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:21,065 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 07:53:21,258 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 07:53:21,258 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:21,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash 695641315, now seen corresponding path program 1 times [2022-01-10 07:53:21,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:21,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258241504] [2022-01-10 07:53:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:21,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:21,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:21,261 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 07:53:21,262 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 07:53:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:21,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:21,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:21,635 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 07:53:21,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:21,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:21,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258241504] [2022-01-10 07:53:21,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258241504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:21,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:21,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:21,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556193750] [2022-01-10 07:53:21,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:21,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:21,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:21,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:21,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:21,636 INFO L87 Difference]: Start difference. First operand 4614 states and 7289 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:22,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:22,160 INFO L93 Difference]: Finished difference Result 7279 states and 10892 transitions. [2022-01-10 07:53:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:22,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:22,171 INFO L225 Difference]: With dead ends: 7279 [2022-01-10 07:53:22,171 INFO L226 Difference]: Without dead ends: 4806 [2022-01-10 07:53:22,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:22,177 INFO L933 BasicCegarLoop]: 4473 mSDtfsCounter, 4779 mSDsluCounter, 8500 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4799 SdHoareTripleChecker+Valid, 12973 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:22,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4799 Valid, 12973 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4806 states. [2022-01-10 07:53:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4806 to 4806. [2022-01-10 07:53:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4806 states, 4682 states have (on average 1.5751815463477146) internal successors, (7375), 4686 states have internal predecessors, (7375), 69 states have call successors, (69), 53 states have call predecessors, (69), 53 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2022-01-10 07:53:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 7512 transitions. [2022-01-10 07:53:22,397 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 7512 transitions. Word has length 179 [2022-01-10 07:53:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:22,398 INFO L470 AbstractCegarLoop]: Abstraction has 4806 states and 7512 transitions. [2022-01-10 07:53:22,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 7512 transitions. [2022-01-10 07:53:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:22,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:22,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:22,431 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 07:53:22,609 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 07:53:22,609 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash -746330521, now seen corresponding path program 1 times [2022-01-10 07:53:22,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:22,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619945773] [2022-01-10 07:53:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:22,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:22,633 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 07:53:22,634 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 07:53:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:22,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:22,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:22,973 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 07:53:22,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:22,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:22,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619945773] [2022-01-10 07:53:22,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619945773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:22,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:22,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:22,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464049353] [2022-01-10 07:53:22,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:22,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:22,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:22,975 INFO L87 Difference]: Start difference. First operand 4806 states and 7512 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:23,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:23,533 INFO L93 Difference]: Finished difference Result 7663 states and 11338 transitions. [2022-01-10 07:53:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:23,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:23,543 INFO L225 Difference]: With dead ends: 7663 [2022-01-10 07:53:23,543 INFO L226 Difference]: Without dead ends: 4998 [2022-01-10 07:53:23,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:23,550 INFO L933 BasicCegarLoop]: 4470 mSDtfsCounter, 4772 mSDsluCounter, 8496 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4792 SdHoareTripleChecker+Valid, 12966 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:23,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4792 Valid, 12966 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2022-01-10 07:53:23,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4998. [2022-01-10 07:53:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4998 states, 4868 states have (on average 1.5591618734593262) internal successors, (7590), 4872 states have internal predecessors, (7590), 71 states have call successors, (71), 57 states have call predecessors, (71), 57 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 07:53:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4998 states to 4998 states and 7731 transitions. [2022-01-10 07:53:23,779 INFO L78 Accepts]: Start accepts. Automaton has 4998 states and 7731 transitions. Word has length 179 [2022-01-10 07:53:23,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:23,779 INFO L470 AbstractCegarLoop]: Abstraction has 4998 states and 7731 transitions. [2022-01-10 07:53:23,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4998 states and 7731 transitions. [2022-01-10 07:53:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:23,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:23,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:23,790 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 07:53:23,988 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 07:53:23,989 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:23,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:23,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2145140606, now seen corresponding path program 1 times [2022-01-10 07:53:23,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:23,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689379835] [2022-01-10 07:53:23,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:23,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:23,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:23,991 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 07:53:23,992 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 07:53:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:24,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:24,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:24,297 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 07:53:24,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:24,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:24,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689379835] [2022-01-10 07:53:24,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689379835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:24,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:24,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:24,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125814754] [2022-01-10 07:53:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:24,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:24,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:24,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:24,298 INFO L87 Difference]: Start difference. First operand 4998 states and 7731 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:24,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:24,840 INFO L93 Difference]: Finished difference Result 8047 states and 11776 transitions. [2022-01-10 07:53:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:53:24,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:24,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:24,848 INFO L225 Difference]: With dead ends: 8047 [2022-01-10 07:53:24,848 INFO L226 Difference]: Without dead ends: 5190 [2022-01-10 07:53:24,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:24,856 INFO L933 BasicCegarLoop]: 4467 mSDtfsCounter, 4765 mSDsluCounter, 8492 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4785 SdHoareTripleChecker+Valid, 12959 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:24,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4785 Valid, 12959 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2022-01-10 07:53:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 5190. [2022-01-10 07:53:25,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 5054 states have (on average 1.543529877324891) internal successors, (7801), 5058 states have internal predecessors, (7801), 73 states have call successors, (73), 61 states have call predecessors, (73), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 07:53:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 7946 transitions. [2022-01-10 07:53:25,058 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 7946 transitions. Word has length 179 [2022-01-10 07:53:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:25,058 INFO L470 AbstractCegarLoop]: Abstraction has 5190 states and 7946 transitions. [2022-01-10 07:53:25,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:25,058 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 7946 transitions. [2022-01-10 07:53:25,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:25,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:25,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:25,079 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 07:53:25,268 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 07:53:25,268 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2130457189, now seen corresponding path program 1 times [2022-01-10 07:53:25,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:25,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122391753] [2022-01-10 07:53:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:25,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:25,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:25,270 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 07:53:25,272 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 07:53:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:25,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:25,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:25,611 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 07:53:25,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:25,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:25,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122391753] [2022-01-10 07:53:25,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122391753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:25,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:25,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:25,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971876483] [2022-01-10 07:53:25,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:25,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:25,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:25,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:25,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:25,612 INFO L87 Difference]: Start difference. First operand 5190 states and 7946 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:25,817 INFO L93 Difference]: Finished difference Result 8588 states and 12407 transitions. [2022-01-10 07:53:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:25,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:25,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:25,825 INFO L225 Difference]: With dead ends: 8588 [2022-01-10 07:53:25,825 INFO L226 Difference]: Without dead ends: 5540 [2022-01-10 07:53:25,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:25,832 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 479 mSDsluCounter, 13666 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 18160 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 07:53:25,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 18160 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5540 states. [2022-01-10 07:53:26,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5540 to 5196. [2022-01-10 07:53:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5196 states, 5060 states have (on average 1.5381422924901185) internal successors, (7783), 5064 states have internal predecessors, (7783), 73 states have call successors, (73), 61 states have call predecessors, (73), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 07:53:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5196 states to 5196 states and 7928 transitions. [2022-01-10 07:53:26,021 INFO L78 Accepts]: Start accepts. Automaton has 5196 states and 7928 transitions. Word has length 179 [2022-01-10 07:53:26,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:26,021 INFO L470 AbstractCegarLoop]: Abstraction has 5196 states and 7928 transitions. [2022-01-10 07:53:26,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:26,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5196 states and 7928 transitions. [2022-01-10 07:53:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:26,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:26,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:26,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 07:53:26,233 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 07:53:26,233 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:26,234 INFO L85 PathProgramCache]: Analyzing trace with hash 80048291, now seen corresponding path program 1 times [2022-01-10 07:53:26,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:26,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100989033] [2022-01-10 07:53:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:26,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:26,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:26,235 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 07:53:26,237 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 07:53:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:26,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:26,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:26,494 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 07:53:26,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:26,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:26,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100989033] [2022-01-10 07:53:26,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100989033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:26,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:26,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:26,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198223096] [2022-01-10 07:53:26,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:26,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:26,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:26,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:26,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:26,496 INFO L87 Difference]: Start difference. First operand 5196 states and 7928 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:26,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:26,752 INFO L93 Difference]: Finished difference Result 8572 states and 12335 transitions. [2022-01-10 07:53:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:26,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:26,762 INFO L225 Difference]: With dead ends: 8572 [2022-01-10 07:53:26,762 INFO L226 Difference]: Without dead ends: 5518 [2022-01-10 07:53:26,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:26,767 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 440 mSDsluCounter, 13651 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 18145 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 07:53:26,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 18145 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2022-01-10 07:53:26,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5202. [2022-01-10 07:53:26,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 5066 states have (on average 1.5327674694038689) internal successors, (7765), 5070 states have internal predecessors, (7765), 73 states have call successors, (73), 61 states have call predecessors, (73), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 07:53:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 7910 transitions. [2022-01-10 07:53:26,951 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 7910 transitions. Word has length 179 [2022-01-10 07:53:26,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:26,951 INFO L470 AbstractCegarLoop]: Abstraction has 5202 states and 7910 transitions. [2022-01-10 07:53:26,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 7910 transitions. [2022-01-10 07:53:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:26,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:26,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:26,962 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 07:53:27,160 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 07:53:27,161 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:27,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:27,161 INFO L85 PathProgramCache]: Analyzing trace with hash -252594847, now seen corresponding path program 1 times [2022-01-10 07:53:27,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:27,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364617205] [2022-01-10 07:53:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:27,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:27,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:27,163 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 07:53:27,165 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 07:53:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:27,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:27,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:27,483 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 07:53:27,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:27,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:27,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364617205] [2022-01-10 07:53:27,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364617205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:27,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:27,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:27,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028944013] [2022-01-10 07:53:27,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:27,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:27,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:27,485 INFO L87 Difference]: Start difference. First operand 5202 states and 7910 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:27,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:27,712 INFO L93 Difference]: Finished difference Result 8556 states and 12263 transitions. [2022-01-10 07:53:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:27,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:27,721 INFO L225 Difference]: With dead ends: 8556 [2022-01-10 07:53:27,721 INFO L226 Difference]: Without dead ends: 5496 [2022-01-10 07:53:27,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:27,726 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 401 mSDsluCounter, 13636 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 18130 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 07:53:27,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 18130 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2022-01-10 07:53:27,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 5208. [2022-01-10 07:53:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5208 states, 5072 states have (on average 1.5274053627760253) internal successors, (7747), 5076 states have internal predecessors, (7747), 73 states have call successors, (73), 61 states have call predecessors, (73), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 07:53:27,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5208 states to 5208 states and 7892 transitions. [2022-01-10 07:53:27,928 INFO L78 Accepts]: Start accepts. Automaton has 5208 states and 7892 transitions. Word has length 179 [2022-01-10 07:53:27,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:27,928 INFO L470 AbstractCegarLoop]: Abstraction has 5208 states and 7892 transitions. [2022-01-10 07:53:27,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:27,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5208 states and 7892 transitions. [2022-01-10 07:53:27,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:27,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:27,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:27,945 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 07:53:28,138 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 07:53:28,138 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:28,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:28,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1911021727, now seen corresponding path program 1 times [2022-01-10 07:53:28,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:28,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943069992] [2022-01-10 07:53:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:28,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:28,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:28,140 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 07:53:28,141 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 07:53:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:28,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:28,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:28,477 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 07:53:28,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:28,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:28,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943069992] [2022-01-10 07:53:28,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943069992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:28,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:28,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:28,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108250585] [2022-01-10 07:53:28,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:28,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:28,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:28,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:28,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:28,479 INFO L87 Difference]: Start difference. First operand 5208 states and 7892 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:28,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:28,707 INFO L93 Difference]: Finished difference Result 8540 states and 12191 transitions. [2022-01-10 07:53:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:28,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:28,715 INFO L225 Difference]: With dead ends: 8540 [2022-01-10 07:53:28,716 INFO L226 Difference]: Without dead ends: 5474 [2022-01-10 07:53:28,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:28,721 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 362 mSDsluCounter, 13621 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 18115 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 07:53:28,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 18115 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:28,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2022-01-10 07:53:29,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 5214. [2022-01-10 07:53:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5078 states have (on average 1.5220559275305239) internal successors, (7729), 5082 states have internal predecessors, (7729), 73 states have call successors, (73), 61 states have call predecessors, (73), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 07:53:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 7874 transitions. [2022-01-10 07:53:29,022 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 7874 transitions. Word has length 179 [2022-01-10 07:53:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:29,022 INFO L470 AbstractCegarLoop]: Abstraction has 5214 states and 7874 transitions. [2022-01-10 07:53:29,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 7874 transitions. [2022-01-10 07:53:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:29,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:29,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:29,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:29,233 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 07:53:29,234 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:29,234 INFO L85 PathProgramCache]: Analyzing trace with hash -994651555, now seen corresponding path program 1 times [2022-01-10 07:53:29,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:29,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034380188] [2022-01-10 07:53:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:29,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:29,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:29,241 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 07:53:29,242 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 07:53:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:29,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:29,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:29,553 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 07:53:29,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:29,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:29,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034380188] [2022-01-10 07:53:29,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034380188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:29,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:29,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:29,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574861153] [2022-01-10 07:53:29,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:29,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:29,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:29,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:29,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:29,555 INFO L87 Difference]: Start difference. First operand 5214 states and 7874 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:29,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:29,800 INFO L93 Difference]: Finished difference Result 8496 states and 12083 transitions. [2022-01-10 07:53:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:29,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:29,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:29,809 INFO L225 Difference]: With dead ends: 8496 [2022-01-10 07:53:29,809 INFO L226 Difference]: Without dead ends: 5424 [2022-01-10 07:53:29,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:29,814 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 284 mSDsluCounter, 13591 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 18085 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 07:53:29,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 18085 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5424 states. [2022-01-10 07:53:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5424 to 5220. [2022-01-10 07:53:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5220 states, 5084 states have (on average 1.5167191188040912) internal successors, (7711), 5088 states have internal predecessors, (7711), 73 states have call successors, (73), 61 states have call predecessors, (73), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 07:53:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 7856 transitions. [2022-01-10 07:53:30,041 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 7856 transitions. Word has length 179 [2022-01-10 07:53:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:30,042 INFO L470 AbstractCegarLoop]: Abstraction has 5220 states and 7856 transitions. [2022-01-10 07:53:30,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 7856 transitions. [2022-01-10 07:53:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:30,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:30,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:30,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:30,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:30,247 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:30,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1023151845, now seen corresponding path program 1 times [2022-01-10 07:53:30,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:30,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002688225] [2022-01-10 07:53:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:30,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:30,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:30,249 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:30,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:53:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:30,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:30,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:30,530 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 07:53:30,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:30,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:30,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002688225] [2022-01-10 07:53:30,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002688225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:30,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:30,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:30,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959694249] [2022-01-10 07:53:30,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:30,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:30,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:30,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:30,532 INFO L87 Difference]: Start difference. First operand 5220 states and 7856 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:30,797 INFO L93 Difference]: Finished difference Result 8480 states and 12011 transitions. [2022-01-10 07:53:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:30,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:30,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:30,805 INFO L225 Difference]: With dead ends: 8480 [2022-01-10 07:53:30,805 INFO L226 Difference]: Without dead ends: 5402 [2022-01-10 07:53:30,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:30,810 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 245 mSDsluCounter, 13576 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 18070 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 07:53:30,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 18070 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:30,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2022-01-10 07:53:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5226. [2022-01-10 07:53:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5226 states, 5090 states have (on average 1.5113948919449902) internal successors, (7693), 5094 states have internal predecessors, (7693), 73 states have call successors, (73), 61 states have call predecessors, (73), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 07:53:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5226 states to 5226 states and 7838 transitions. [2022-01-10 07:53:31,024 INFO L78 Accepts]: Start accepts. Automaton has 5226 states and 7838 transitions. Word has length 179 [2022-01-10 07:53:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:31,024 INFO L470 AbstractCegarLoop]: Abstraction has 5226 states and 7838 transitions. [2022-01-10 07:53:31,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:31,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5226 states and 7838 transitions. [2022-01-10 07:53:31,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:31,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:31,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:31,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:31,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:31,233 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:31,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:31,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1313240665, now seen corresponding path program 1 times [2022-01-10 07:53:31,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:31,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929962330] [2022-01-10 07:53:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:31,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:31,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:31,235 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:31,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:53:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:31,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:53:31,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:31,636 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 07:53:31,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:31,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:31,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929962330] [2022-01-10 07:53:31,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929962330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:31,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:31,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:53:31,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696467629] [2022-01-10 07:53:31,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:31,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:53:31,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:53:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:53:31,646 INFO L87 Difference]: Start difference. First operand 5226 states and 7838 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:32,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:32,044 INFO L93 Difference]: Finished difference Result 11167 states and 15282 transitions. [2022-01-10 07:53:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:53:32,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:32,059 INFO L225 Difference]: With dead ends: 11167 [2022-01-10 07:53:32,059 INFO L226 Difference]: Without dead ends: 8083 [2022-01-10 07:53:32,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 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 07:53:32,068 INFO L933 BasicCegarLoop]: 4569 mSDtfsCounter, 4389 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4389 SdHoareTripleChecker+Valid, 5064 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 07:53:32,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4389 Valid, 5064 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:32,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8083 states. [2022-01-10 07:53:32,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8083 to 8075. [2022-01-10 07:53:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8075 states, 7819 states have (on average 1.4170610052436372) internal successors, (11080), 7824 states have internal predecessors, (11080), 136 states have call successors, (136), 117 states have call predecessors, (136), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 07:53:32,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8075 states to 8075 states and 11352 transitions. [2022-01-10 07:53:32,491 INFO L78 Accepts]: Start accepts. Automaton has 8075 states and 11352 transitions. Word has length 179 [2022-01-10 07:53:32,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:32,491 INFO L470 AbstractCegarLoop]: Abstraction has 8075 states and 11352 transitions. [2022-01-10 07:53:32,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 8075 states and 11352 transitions. [2022-01-10 07:53:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:32,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:32,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:32,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:32,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:32,703 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 858334584, now seen corresponding path program 1 times [2022-01-10 07:53:32,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:32,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997075311] [2022-01-10 07:53:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:32,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:32,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:32,705 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:32,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 07:53:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:32,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:32,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:33,033 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 07:53:33,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:33,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:33,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997075311] [2022-01-10 07:53:33,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997075311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:33,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:33,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:33,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650759646] [2022-01-10 07:53:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:33,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:33,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:33,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:33,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:33,035 INFO L87 Difference]: Start difference. First operand 8075 states and 11352 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:33,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:33,667 INFO L93 Difference]: Finished difference Result 16010 states and 21392 transitions. [2022-01-10 07:53:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:33,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:33,712 INFO L225 Difference]: With dead ends: 16010 [2022-01-10 07:53:33,712 INFO L226 Difference]: Without dead ends: 10077 [2022-01-10 07:53:33,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:33,736 INFO L933 BasicCegarLoop]: 4500 mSDtfsCounter, 209 mSDsluCounter, 13593 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 18093 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 07:53:33,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 18093 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10077 states. [2022-01-10 07:53:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10077 to 8153. [2022-01-10 07:53:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8153 states, 7897 states have (on average 1.4099024946182095) internal successors, (11134), 7902 states have internal predecessors, (11134), 136 states have call successors, (136), 117 states have call predecessors, (136), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 07:53:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8153 states to 8153 states and 11406 transitions. [2022-01-10 07:53:34,195 INFO L78 Accepts]: Start accepts. Automaton has 8153 states and 11406 transitions. Word has length 179 [2022-01-10 07:53:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:34,195 INFO L470 AbstractCegarLoop]: Abstraction has 8153 states and 11406 transitions. [2022-01-10 07:53:34,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:34,195 INFO L276 IsEmpty]: Start isEmpty. Operand 8153 states and 11406 transitions. [2022-01-10 07:53:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:34,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:34,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:34,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:34,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:34,405 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:34,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:34,405 INFO L85 PathProgramCache]: Analyzing trace with hash -284167882, now seen corresponding path program 1 times [2022-01-10 07:53:34,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:34,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563009247] [2022-01-10 07:53:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:34,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:34,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:34,406 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:34,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 07:53:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:34,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:34,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:34,704 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 07:53:34,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:34,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:34,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563009247] [2022-01-10 07:53:34,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563009247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:34,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:34,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:34,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041945973] [2022-01-10 07:53:34,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:34,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:34,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:34,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:34,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:34,705 INFO L87 Difference]: Start difference. First operand 8153 states and 11406 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:35,230 INFO L93 Difference]: Finished difference Result 14290 states and 19086 transitions. [2022-01-10 07:53:35,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:35,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:35,240 INFO L225 Difference]: With dead ends: 14290 [2022-01-10 07:53:35,240 INFO L226 Difference]: Without dead ends: 8279 [2022-01-10 07:53:35,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:35,245 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 166 mSDsluCounter, 13541 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 18035 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 07:53:35,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 18035 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:35,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8279 states. [2022-01-10 07:53:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8279 to 8159. [2022-01-10 07:53:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8159 states, 7903 states have (on average 1.4035176515247374) internal successors, (11092), 7908 states have internal predecessors, (11092), 136 states have call successors, (136), 117 states have call predecessors, (136), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 07:53:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8159 states to 8159 states and 11364 transitions. [2022-01-10 07:53:35,675 INFO L78 Accepts]: Start accepts. Automaton has 8159 states and 11364 transitions. Word has length 179 [2022-01-10 07:53:35,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:35,675 INFO L470 AbstractCegarLoop]: Abstraction has 8159 states and 11364 transitions. [2022-01-10 07:53:35,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:35,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8159 states and 11364 transitions. [2022-01-10 07:53:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:35,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:35,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:35,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:35,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:35,884 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 603054964, now seen corresponding path program 1 times [2022-01-10 07:53:35,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:35,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662344685] [2022-01-10 07:53:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:35,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:35,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:35,886 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:35,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 07:53:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:36,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:36,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:36,208 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 07:53:36,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:36,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:36,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662344685] [2022-01-10 07:53:36,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662344685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:36,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:36,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:36,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989076971] [2022-01-10 07:53:36,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:36,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:36,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:36,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:36,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:36,209 INFO L87 Difference]: Start difference. First operand 8159 states and 11364 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:36,680 INFO L93 Difference]: Finished difference Result 14372 states and 19090 transitions. [2022-01-10 07:53:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:36,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:36,694 INFO L225 Difference]: With dead ends: 14372 [2022-01-10 07:53:36,694 INFO L226 Difference]: Without dead ends: 8355 [2022-01-10 07:53:36,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:36,701 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 127 mSDsluCounter, 13526 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 18020 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 07:53:36,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 18020 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8355 states. [2022-01-10 07:53:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8355 to 8171. [2022-01-10 07:53:37,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8171 states, 7915 states have (on average 1.397094125078964) internal successors, (11058), 7920 states have internal predecessors, (11058), 136 states have call successors, (136), 117 states have call predecessors, (136), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 07:53:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8171 states to 8171 states and 11330 transitions. [2022-01-10 07:53:37,214 INFO L78 Accepts]: Start accepts. Automaton has 8171 states and 11330 transitions. Word has length 179 [2022-01-10 07:53:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:37,214 INFO L470 AbstractCegarLoop]: Abstraction has 8171 states and 11330 transitions. [2022-01-10 07:53:37,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:37,214 INFO L276 IsEmpty]: Start isEmpty. Operand 8171 states and 11330 transitions. [2022-01-10 07:53:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:37,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:37,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:37,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 07:53:37,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:37,418 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:37,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:37,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1556995122, now seen corresponding path program 1 times [2022-01-10 07:53:37,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:37,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334554779] [2022-01-10 07:53:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:37,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:37,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:37,420 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:37,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 07:53:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:37,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:37,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:37,768 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 07:53:37,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:37,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:37,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334554779] [2022-01-10 07:53:37,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334554779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:37,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:37,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:37,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721804509] [2022-01-10 07:53:37,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:37,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:37,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:37,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:37,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:37,770 INFO L87 Difference]: Start difference. First operand 8171 states and 11330 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:38,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:38,252 INFO L93 Difference]: Finished difference Result 14340 states and 18950 transitions. [2022-01-10 07:53:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:38,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:38,265 INFO L225 Difference]: With dead ends: 14340 [2022-01-10 07:53:38,265 INFO L226 Difference]: Without dead ends: 8311 [2022-01-10 07:53:38,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:38,274 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 88 mSDsluCounter, 13511 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 18005 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 07:53:38,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 18005 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:38,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8311 states. [2022-01-10 07:53:38,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8311 to 8183. [2022-01-10 07:53:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8183 states, 7927 states have (on average 1.3906900466759178) internal successors, (11024), 7932 states have internal predecessors, (11024), 136 states have call successors, (136), 117 states have call predecessors, (136), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 07:53:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 11296 transitions. [2022-01-10 07:53:38,801 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 11296 transitions. Word has length 179 [2022-01-10 07:53:38,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:38,801 INFO L470 AbstractCegarLoop]: Abstraction has 8183 states and 11296 transitions. [2022-01-10 07:53:38,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:38,802 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 11296 transitions. [2022-01-10 07:53:38,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:38,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:38,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:38,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 07:53:39,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:39,007 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:39,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2058699920, now seen corresponding path program 1 times [2022-01-10 07:53:39,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:39,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844140392] [2022-01-10 07:53:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:39,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:39,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:39,010 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:39,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 07:53:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:39,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:39,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:39,287 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 07:53:39,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:39,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:39,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844140392] [2022-01-10 07:53:39,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844140392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:39,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:39,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:39,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010726218] [2022-01-10 07:53:39,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:39,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:39,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:39,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:39,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:39,290 INFO L87 Difference]: Start difference. First operand 8183 states and 11296 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:39,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:39,779 INFO L93 Difference]: Finished difference Result 14308 states and 18810 transitions. [2022-01-10 07:53:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:39,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:39,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:39,794 INFO L225 Difference]: With dead ends: 14308 [2022-01-10 07:53:39,794 INFO L226 Difference]: Without dead ends: 8267 [2022-01-10 07:53:39,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:39,807 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 49 mSDsluCounter, 13496 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 17990 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 07:53:39,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 17990 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:39,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8267 states. [2022-01-10 07:53:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8267 to 8195. [2022-01-10 07:53:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8195 states, 7939 states have (on average 1.3843053281269682) internal successors, (10990), 7944 states have internal predecessors, (10990), 136 states have call successors, (136), 117 states have call predecessors, (136), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 07:53:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8195 states to 8195 states and 11262 transitions. [2022-01-10 07:53:40,370 INFO L78 Accepts]: Start accepts. Automaton has 8195 states and 11262 transitions. Word has length 179 [2022-01-10 07:53:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:40,370 INFO L470 AbstractCegarLoop]: Abstraction has 8195 states and 11262 transitions. [2022-01-10 07:53:40,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:40,370 INFO L276 IsEmpty]: Start isEmpty. Operand 8195 states and 11262 transitions. [2022-01-10 07:53:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:40,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:40,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:40,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-01-10 07:53:40,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:40,576 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:40,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2018025170, now seen corresponding path program 1 times [2022-01-10 07:53:40,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:40,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453080886] [2022-01-10 07:53:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:40,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:40,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:40,580 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:40,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 07:53:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:40,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:40,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:40,952 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 07:53:40,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:40,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:40,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453080886] [2022-01-10 07:53:40,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453080886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:40,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:40,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:53:40,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555465166] [2022-01-10 07:53:40,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:40,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:40,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:40,954 INFO L87 Difference]: Start difference. First operand 8195 states and 11262 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:41,432 INFO L93 Difference]: Finished difference Result 14276 states and 18670 transitions. [2022-01-10 07:53:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:41,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:41,448 INFO L225 Difference]: With dead ends: 14276 [2022-01-10 07:53:41,448 INFO L226 Difference]: Without dead ends: 8223 [2022-01-10 07:53:41,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:41,457 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 10 mSDsluCounter, 13481 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17975 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 07:53:41,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 17975 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8223 states. [2022-01-10 07:53:41,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8223 to 8207. [2022-01-10 07:53:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8207 states, 7951 states have (on average 1.3779398817758772) internal successors, (10956), 7956 states have internal predecessors, (10956), 136 states have call successors, (136), 117 states have call predecessors, (136), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 07:53:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8207 states to 8207 states and 11228 transitions. [2022-01-10 07:53:41,925 INFO L78 Accepts]: Start accepts. Automaton has 8207 states and 11228 transitions. Word has length 179 [2022-01-10 07:53:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:41,926 INFO L470 AbstractCegarLoop]: Abstraction has 8207 states and 11228 transitions. [2022-01-10 07:53:41,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 8207 states and 11228 transitions. [2022-01-10 07:53:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:41,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:41,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:41,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:42,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:42,135 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1795861868, now seen corresponding path program 1 times [2022-01-10 07:53:42,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:42,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27168263] [2022-01-10 07:53:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:42,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:42,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:42,137 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:42,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 07:53:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:42,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:53:42,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:42,533 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 07:53:42,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:42,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:42,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27168263] [2022-01-10 07:53:42,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27168263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:42,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:42,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:42,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626534795] [2022-01-10 07:53:42,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:42,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:42,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:42,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:42,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:42,534 INFO L87 Difference]: Start difference. First operand 8207 states and 11228 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:43,353 INFO L93 Difference]: Finished difference Result 14273 states and 18477 transitions. [2022-01-10 07:53:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:43,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:43,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:43,367 INFO L225 Difference]: With dead ends: 14273 [2022-01-10 07:53:43,367 INFO L226 Difference]: Without dead ends: 8207 [2022-01-10 07:53:43,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:43,374 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 4558 mSDsluCounter, 8489 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 12954 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:43,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4577 Valid, 12954 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:43,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2022-01-10 07:53:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 8207. [2022-01-10 07:53:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8207 states, 7951 states have (on average 1.3761790969689347) internal successors, (10942), 7956 states have internal predecessors, (10942), 136 states have call successors, (136), 117 states have call predecessors, (136), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 07:53:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8207 states to 8207 states and 11214 transitions. [2022-01-10 07:53:43,851 INFO L78 Accepts]: Start accepts. Automaton has 8207 states and 11214 transitions. Word has length 179 [2022-01-10 07:53:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:43,852 INFO L470 AbstractCegarLoop]: Abstraction has 8207 states and 11214 transitions. [2022-01-10 07:53:43,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8207 states and 11214 transitions. [2022-01-10 07:53:43,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:43,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:43,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:43,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:44,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:44,060 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2044008362, now seen corresponding path program 1 times [2022-01-10 07:53:44,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:44,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61254781] [2022-01-10 07:53:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:44,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:44,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:44,062 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:44,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 07:53:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:44,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:53:44,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:44,473 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 07:53:44,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:44,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:44,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61254781] [2022-01-10 07:53:44,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61254781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:44,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:44,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:44,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310087951] [2022-01-10 07:53:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:44,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:44,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:44,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:44,474 INFO L87 Difference]: Start difference. First operand 8207 states and 11214 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:45,328 INFO L93 Difference]: Finished difference Result 14273 states and 18449 transitions. [2022-01-10 07:53:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:53:45,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:45,342 INFO L225 Difference]: With dead ends: 14273 [2022-01-10 07:53:45,342 INFO L226 Difference]: Without dead ends: 8207 [2022-01-10 07:53:45,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 07:53:45,350 INFO L933 BasicCegarLoop]: 4462 mSDtfsCounter, 4545 mSDsluCounter, 8485 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 12947 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:45,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4564 Valid, 12947 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:53:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2022-01-10 07:53:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 8207. [2022-01-10 07:53:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8207 states, 7951 states have (on average 1.3744183121619922) internal successors, (10928), 7956 states have internal predecessors, (10928), 136 states have call successors, (136), 117 states have call predecessors, (136), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 07:53:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8207 states to 8207 states and 11200 transitions. [2022-01-10 07:53:45,845 INFO L78 Accepts]: Start accepts. Automaton has 8207 states and 11200 transitions. Word has length 179 [2022-01-10 07:53:45,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:45,845 INFO L470 AbstractCegarLoop]: Abstraction has 8207 states and 11200 transitions. [2022-01-10 07:53:45,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 8207 states and 11200 transitions. [2022-01-10 07:53:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:45,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:45,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:45,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:46,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:46,055 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash -199974936, now seen corresponding path program 1 times [2022-01-10 07:53:46,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:46,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451342072] [2022-01-10 07:53:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:46,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:46,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:46,064 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:46,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 07:53:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:46,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:53:46,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:46,461 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 07:53:46,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:46,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:46,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451342072] [2022-01-10 07:53:46,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451342072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:46,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:46,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:46,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000270004] [2022-01-10 07:53:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:46,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:53:46,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:53:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:53:46,463 INFO L87 Difference]: Start difference. First operand 8207 states and 11200 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:47,461 INFO L93 Difference]: Finished difference Result 14649 states and 18886 transitions. [2022-01-10 07:53:47,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:47,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 07:53:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:47,474 INFO L225 Difference]: With dead ends: 14649 [2022-01-10 07:53:47,474 INFO L226 Difference]: Without dead ends: 8583 [2022-01-10 07:53:47,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 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 07:53:47,482 INFO L933 BasicCegarLoop]: 4504 mSDtfsCounter, 4680 mSDsluCounter, 8480 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4699 SdHoareTripleChecker+Valid, 12984 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:47,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4699 Valid, 12984 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:53:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8583 states. [2022-01-10 07:53:47,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8583 to 8505. [2022-01-10 07:53:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8505 states, 8245 states have (on average 1.3600970285021226) internal successors, (11214), 8250 states have internal predecessors, (11214), 136 states have call successors, (136), 121 states have call predecessors, (136), 122 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 07:53:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8505 states to 8505 states and 11486 transitions. [2022-01-10 07:53:48,001 INFO L78 Accepts]: Start accepts. Automaton has 8505 states and 11486 transitions. Word has length 179 [2022-01-10 07:53:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:48,001 INFO L470 AbstractCegarLoop]: Abstraction has 8505 states and 11486 transitions. [2022-01-10 07:53:48,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:53:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8505 states and 11486 transitions. [2022-01-10 07:53:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 07:53:48,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:48,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:48,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:48,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:48,210 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:48,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:48,211 INFO L85 PathProgramCache]: Analyzing trace with hash -137935322, now seen corresponding path program 1 times [2022-01-10 07:53:48,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:48,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210916075] [2022-01-10 07:53:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:48,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:48,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:48,213 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:48,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-01-10 07:53:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:48,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:53:48,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:48,547 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 07:53:48,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:48,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:48,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210916075] [2022-01-10 07:53:48,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210916075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:48,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:48,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:53:48,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044820364] [2022-01-10 07:53:48,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:48,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:53:48,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:48,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:53:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:53:48,548 INFO L87 Difference]: Start difference. First operand 8505 states and 11486 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:53:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:49,580 INFO L93 Difference]: Finished difference Result 21128 states and 26440 transitions. [2022-01-10 07:53:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:53:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 179 [2022-01-10 07:53:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:49,608 INFO L225 Difference]: With dead ends: 21128 [2022-01-10 07:53:49,608 INFO L226 Difference]: Without dead ends: 14765 [2022-01-10 07:53:49,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 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 07:53:49,622 INFO L933 BasicCegarLoop]: 4508 mSDtfsCounter, 4290 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 4994 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 07:53:49,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4290 Valid, 4994 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14765 states. [2022-01-10 07:53:50,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14765 to 14761. [2022-01-10 07:53:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14761 states, 14249 states have (on average 1.280370552319461) internal successors, (18244), 14260 states have internal predecessors, (18244), 266 states have call successors, (266), 241 states have call predecessors, (266), 244 states have return successors, (268), 260 states have call predecessors, (268), 264 states have call successors, (268) [2022-01-10 07:53:50,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14761 states to 14761 states and 18778 transitions. [2022-01-10 07:53:50,729 INFO L78 Accepts]: Start accepts. Automaton has 14761 states and 18778 transitions. Word has length 179 [2022-01-10 07:53:50,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:50,730 INFO L470 AbstractCegarLoop]: Abstraction has 14761 states and 18778 transitions. [2022-01-10 07:53:50,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:53:50,730 INFO L276 IsEmpty]: Start isEmpty. Operand 14761 states and 18778 transitions. [2022-01-10 07:53:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 07:53:50,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:50,738 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:53:50,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:50,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:50,946 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash 424746401, now seen corresponding path program 1 times [2022-01-10 07:53:50,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:50,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710627858] [2022-01-10 07:53:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:50,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:50,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:50,948 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:50,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-01-10 07:53:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:51,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:53:51,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 07:53:51,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:51,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:51,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710627858] [2022-01-10 07:53:51,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710627858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:51,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:51,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:53:51,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267025601] [2022-01-10 07:53:51,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:51,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:53:51,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:53:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:53:51,691 INFO L87 Difference]: Start difference. First operand 14761 states and 18778 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)