/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_label45+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:45:11,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:45:11,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:45:11,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:45:11,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:45:11,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:45:11,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:45:11,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:45:11,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:45:11,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:45:11,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:45:11,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:45:11,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:45:11,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:45:11,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:45:11,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:45:11,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:45:11,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:45:11,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:45:11,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:45:11,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:45:11,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:45:11,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:45:11,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:45:11,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:45:11,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:45:11,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:45:11,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:45:11,545 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 07:45:11,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:45:11,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:45:11,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:45:11,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:45:11,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:45:11,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:45:11,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:45:11,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:45:11,582 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:45:11,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:45:11,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:45:11,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:45:11,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:45:11,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:45:11,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:45:11,584 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:45:11,584 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:45:11,584 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:45:11,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:45:11,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:45:11,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:45:11,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:45:11,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:45:11,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:45:11,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:45:11,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:45:11,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:45:11,587 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:45:11,587 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:45:11,587 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:45:11,587 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:45:11,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:45:11,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:45:11,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:45:11,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:45:11,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:45:11,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:45:11,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:45:11,848 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:45:11,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.04.cil-1.c [2022-01-10 07:45:11,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e96d7695/06431d07bd6c4c808fdbc846672c92a2/FLAG7de7f2598 [2022-01-10 07:45:12,701 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:45:12,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.04.cil-1.c [2022-01-10 07:45:12,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e96d7695/06431d07bd6c4c808fdbc846672c92a2/FLAG7de7f2598 [2022-01-10 07:45:13,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e96d7695/06431d07bd6c4c808fdbc846672c92a2 [2022-01-10 07:45:13,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:45:13,222 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:45:13,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:45:13,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:45:13,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:45:13,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:45:13" (1/1) ... [2022-01-10 07:45:13,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7525c3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:13, skipping insertion in model container [2022-01-10 07:45:13,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:45:13" (1/1) ... [2022-01-10 07:45:13,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:45:13,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:45:14,848 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_label45+token_ring.04.cil-1.c[380323,380336] [2022-01-10 07:45:14,875 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_label45+token_ring.04.cil-1.c[383339,383352] [2022-01-10 07:45:15,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:45:15,048 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:45:15,825 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_label45+token_ring.04.cil-1.c[380323,380336] [2022-01-10 07:45:15,831 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_label45+token_ring.04.cil-1.c[383339,383352] [2022-01-10 07:45:15,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:45:15,905 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:45:15,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15 WrapperNode [2022-01-10 07:45:15,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:45:15,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:45:15,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:45:15,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:45:15,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (1/1) ... [2022-01-10 07:45:16,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (1/1) ... [2022-01-10 07:45:16,393 INFO L137 Inliner]: procedures = 53, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12709 [2022-01-10 07:45:16,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:45:16,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:45:16,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:45:16,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:45:16,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (1/1) ... [2022-01-10 07:45:16,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (1/1) ... [2022-01-10 07:45:16,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (1/1) ... [2022-01-10 07:45:16,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (1/1) ... [2022-01-10 07:45:16,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (1/1) ... [2022-01-10 07:45:16,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (1/1) ... [2022-01-10 07:45:16,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (1/1) ... [2022-01-10 07:45:16,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:45:16,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:45:16,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:45:16,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:45:16,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (1/1) ... [2022-01-10 07:45:16,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:45:16,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:45:16,977 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 07:45:17,002 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 07:45:17,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:45:17,022 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:45:17,022 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:45:17,022 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:45:17,022 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:45:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:45:17,023 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:45:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:45:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:45:17,023 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:45:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:45:17,023 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:45:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:45:17,023 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:45:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:45:17,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:45:17,176 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:45:17,177 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:45:25,173 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:45:25,195 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:45:25,195 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 07:45:25,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:45:25 BoogieIcfgContainer [2022-01-10 07:45:25,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:45:25,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:45:25,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:45:25,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:45:25,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:45:13" (1/3) ... [2022-01-10 07:45:25,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b76d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:45:25, skipping insertion in model container [2022-01-10 07:45:25,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:45:15" (2/3) ... [2022-01-10 07:45:25,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b76d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:45:25, skipping insertion in model container [2022-01-10 07:45:25,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:45:25" (3/3) ... [2022-01-10 07:45:25,208 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.04.cil-1.c [2022-01-10 07:45:25,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:45:25,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:45:25,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:45:25,276 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 07:45:25,277 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:45:25,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-10 07:45:25,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:25,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:25,349 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] [2022-01-10 07:45:25,349 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:25,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:25,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2022-01-10 07:45:25,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:25,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648969472] [2022-01-10 07:45:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:25,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:25,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:25,448 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 07:45:25,450 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 07:45:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:25,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:45:25,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:25,855 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 07:45:25,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:25,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:25,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648969472] [2022-01-10 07:45:25,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648969472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:25,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:25,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:45:25,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589840846] [2022-01-10 07:45:25,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:25,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:45:25,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:25,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:45:25,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:25,903 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:26,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:26,055 INFO L93 Difference]: Finished difference Result 4724 states and 8731 transitions. [2022-01-10 07:45:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:45:26,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:26,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:26,077 INFO L225 Difference]: With dead ends: 4724 [2022-01-10 07:45:26,078 INFO L226 Difference]: Without dead ends: 2298 [2022-01-10 07:45:26,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 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 07:45:26,089 INFO L933 BasicCegarLoop]: 4292 mSDtfsCounter, 263 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 8314 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 07:45:26,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 8314 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-01-10 07:45:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2298. [2022-01-10 07:45:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-10 07:45:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2022-01-10 07:45:26,220 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2022-01-10 07:45:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:26,222 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2022-01-10 07:45:26,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:26,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2022-01-10 07:45:26,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:26,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:26,231 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] [2022-01-10 07:45:26,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:45:26,441 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 07:45:26,442 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:26,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:26,443 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2022-01-10 07:45:26,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:26,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195034759] [2022-01-10 07:45:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:26,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:26,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:26,445 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 07:45:26,447 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 07:45:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:26,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:26,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:26,790 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 07:45:26,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:26,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:26,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195034759] [2022-01-10 07:45:26,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195034759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:26,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:26,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:26,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317524699] [2022-01-10 07:45:26,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:26,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:26,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:26,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:26,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:26,794 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:27,273 INFO L93 Difference]: Finished difference Result 2644 states and 4754 transitions. [2022-01-10 07:45:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:27,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:27,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:27,288 INFO L225 Difference]: With dead ends: 2644 [2022-01-10 07:45:27,288 INFO L226 Difference]: Without dead ends: 2479 [2022-01-10 07:45:27,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:27,291 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 4425 mSDsluCounter, 8425 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 12667 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:27,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4437 Valid, 12667 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:45:27,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-01-10 07:45:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2466. [2022-01-10 07:45:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:45:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4479 transitions. [2022-01-10 07:45:27,353 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4479 transitions. Word has length 90 [2022-01-10 07:45:27,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:27,354 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4479 transitions. [2022-01-10 07:45:27,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:27,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4479 transitions. [2022-01-10 07:45:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:27,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:27,357 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] [2022-01-10 07:45:27,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:27,566 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 07:45:27,567 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2022-01-10 07:45:27,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:27,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919541491] [2022-01-10 07:45:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:27,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:27,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:27,570 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 07:45:27,572 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 07:45:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:27,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:27,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:27,872 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 07:45:27,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:27,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:27,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919541491] [2022-01-10 07:45:27,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919541491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:27,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:27,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:27,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465814382] [2022-01-10 07:45:27,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:27,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:27,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:27,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:27,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:27,880 INFO L87 Difference]: Start difference. First operand 2466 states and 4479 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:28,148 INFO L93 Difference]: Finished difference Result 2799 states and 4989 transitions. [2022-01-10 07:45:28,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:45:28,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:28,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:28,161 INFO L225 Difference]: With dead ends: 2799 [2022-01-10 07:45:28,161 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 07:45:28,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:28,167 INFO L933 BasicCegarLoop]: 4200 mSDtfsCounter, 4294 mSDsluCounter, 8193 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 12393 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:28,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 12393 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:28,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 07:45:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2466. [2022-01-10 07:45:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.821900826446281) internal successors, (4409), 2423 states have internal predecessors, (4409), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:45:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4472 transitions. [2022-01-10 07:45:28,229 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4472 transitions. Word has length 90 [2022-01-10 07:45:28,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:28,230 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4472 transitions. [2022-01-10 07:45:28,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4472 transitions. [2022-01-10 07:45:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:28,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:28,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:28,244 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 07:45:28,442 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 07:45:28,442 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:28,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:28,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1092701226, now seen corresponding path program 1 times [2022-01-10 07:45:28,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:28,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789404145] [2022-01-10 07:45:28,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:28,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:28,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:28,445 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 07:45:28,447 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 07:45:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:28,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:28,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:28,717 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 07:45:28,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:28,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:28,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789404145] [2022-01-10 07:45:28,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789404145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:28,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:28,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:28,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938252169] [2022-01-10 07:45:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:28,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:28,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:28,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:28,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:28,720 INFO L87 Difference]: Start difference. First operand 2466 states and 4472 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:28,975 INFO L93 Difference]: Finished difference Result 2799 states and 4975 transitions. [2022-01-10 07:45:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:45:28,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:28,986 INFO L225 Difference]: With dead ends: 2799 [2022-01-10 07:45:28,986 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 07:45:28,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:28,989 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 4288 mSDsluCounter, 8189 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4300 SdHoareTripleChecker+Valid, 12386 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:28,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4300 Valid, 12386 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 07:45:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2466. [2022-01-10 07:45:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.8190082644628098) internal successors, (4402), 2423 states have internal predecessors, (4402), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:45:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4465 transitions. [2022-01-10 07:45:29,049 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4465 transitions. Word has length 90 [2022-01-10 07:45:29,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:29,049 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4465 transitions. [2022-01-10 07:45:29,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:29,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4465 transitions. [2022-01-10 07:45:29,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:29,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:29,050 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] [2022-01-10 07:45:29,060 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 07:45:29,259 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 07:45:29,260 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:29,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:29,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1291223512, now seen corresponding path program 1 times [2022-01-10 07:45:29,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:29,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977432995] [2022-01-10 07:45:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:29,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:29,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:29,262 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 07:45:29,264 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 07:45:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:29,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:29,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:29,506 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 07:45:29,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:29,507 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:29,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977432995] [2022-01-10 07:45:29,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977432995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:29,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:29,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:29,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318353994] [2022-01-10 07:45:29,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:29,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:29,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:29,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:29,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:29,509 INFO L87 Difference]: Start difference. First operand 2466 states and 4465 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:29,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:29,752 INFO L93 Difference]: Finished difference Result 2799 states and 4961 transitions. [2022-01-10 07:45:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:45:29,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:29,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:29,763 INFO L225 Difference]: With dead ends: 2799 [2022-01-10 07:45:29,763 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 07:45:29,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:29,765 INFO L933 BasicCegarLoop]: 4194 mSDtfsCounter, 4282 mSDsluCounter, 8185 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 12379 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:29,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4294 Valid, 12379 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 07:45:29,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2466. [2022-01-10 07:45:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.8161157024793388) internal successors, (4395), 2423 states have internal predecessors, (4395), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:45:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4458 transitions. [2022-01-10 07:45:29,823 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4458 transitions. Word has length 90 [2022-01-10 07:45:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:29,824 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4458 transitions. [2022-01-10 07:45:29,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4458 transitions. [2022-01-10 07:45:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:29,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:29,826 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] [2022-01-10 07:45:29,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:30,037 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 07:45:30,038 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:30,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:30,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1430163924, now seen corresponding path program 1 times [2022-01-10 07:45:30,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:30,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117702302] [2022-01-10 07:45:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:30,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:30,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:30,041 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 07:45:30,042 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 07:45:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:30,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:30,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:30,268 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 07:45:30,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:30,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:30,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117702302] [2022-01-10 07:45:30,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117702302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:30,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:30,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:30,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611002129] [2022-01-10 07:45:30,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:30,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:30,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:30,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:30,271 INFO L87 Difference]: Start difference. First operand 2466 states and 4458 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:30,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:30,575 INFO L93 Difference]: Finished difference Result 2879 states and 5069 transitions. [2022-01-10 07:45:30,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:30,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:30,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:30,586 INFO L225 Difference]: With dead ends: 2879 [2022-01-10 07:45:30,586 INFO L226 Difference]: Without dead ends: 2546 [2022-01-10 07:45:30,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:30,589 INFO L933 BasicCegarLoop]: 4191 mSDtfsCounter, 4321 mSDsluCounter, 8180 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4333 SdHoareTripleChecker+Valid, 12371 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:30,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4333 Valid, 12371 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2022-01-10 07:45:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2546. [2022-01-10 07:45:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2494 states have (on average 1.8003207698476342) internal successors, (4490), 2497 states have internal predecessors, (4490), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:45:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 4557 transitions. [2022-01-10 07:45:30,663 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 4557 transitions. Word has length 90 [2022-01-10 07:45:30,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:30,664 INFO L470 AbstractCegarLoop]: Abstraction has 2546 states and 4557 transitions. [2022-01-10 07:45:30,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 4557 transitions. [2022-01-10 07:45:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:30,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:30,666 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] [2022-01-10 07:45:30,677 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 07:45:30,875 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 07:45:30,877 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:30,878 INFO L85 PathProgramCache]: Analyzing trace with hash -61826927, now seen corresponding path program 1 times [2022-01-10 07:45:30,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:30,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913583391] [2022-01-10 07:45:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:30,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:30,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:30,880 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 07:45:30,882 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 07:45:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:30,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:30,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:31,139 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 07:45:31,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:31,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:31,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913583391] [2022-01-10 07:45:31,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913583391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:31,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:31,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:31,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389598829] [2022-01-10 07:45:31,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:31,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:31,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:31,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:31,142 INFO L87 Difference]: Start difference. First operand 2546 states and 4557 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:31,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:31,519 INFO L93 Difference]: Finished difference Result 3039 states and 5267 transitions. [2022-01-10 07:45:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:31,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:31,536 INFO L225 Difference]: With dead ends: 3039 [2022-01-10 07:45:31,542 INFO L226 Difference]: Without dead ends: 2626 [2022-01-10 07:45:31,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:31,547 INFO L933 BasicCegarLoop]: 4189 mSDtfsCounter, 4314 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 12365 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:31,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 12365 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:31,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-01-10 07:45:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2626. [2022-01-10 07:45:31,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2568 states have (on average 1.783878504672897) internal successors, (4581), 2571 states have internal predecessors, (4581), 35 states have call successors, (35), 20 states have call predecessors, (35), 21 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 07:45:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 4652 transitions. [2022-01-10 07:45:31,638 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 4652 transitions. Word has length 90 [2022-01-10 07:45:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:31,638 INFO L470 AbstractCegarLoop]: Abstraction has 2626 states and 4652 transitions. [2022-01-10 07:45:31,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 4652 transitions. [2022-01-10 07:45:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:31,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:31,640 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] [2022-01-10 07:45:31,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:31,850 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 07:45:31,851 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1935075861, now seen corresponding path program 1 times [2022-01-10 07:45:31,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:31,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158120489] [2022-01-10 07:45:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:31,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:31,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:31,853 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 07:45:31,856 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 07:45:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:31,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:31,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:32,081 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 07:45:32,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:32,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:32,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158120489] [2022-01-10 07:45:32,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158120489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:32,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:32,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:32,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830725690] [2022-01-10 07:45:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:32,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:32,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:32,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:32,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:32,084 INFO L87 Difference]: Start difference. First operand 2626 states and 4652 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:32,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:32,389 INFO L93 Difference]: Finished difference Result 3199 states and 5457 transitions. [2022-01-10 07:45:32,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:32,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:32,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:32,399 INFO L225 Difference]: With dead ends: 3199 [2022-01-10 07:45:32,400 INFO L226 Difference]: Without dead ends: 2706 [2022-01-10 07:45:32,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:32,402 INFO L933 BasicCegarLoop]: 4184 mSDtfsCounter, 4308 mSDsluCounter, 8172 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 12356 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:32,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4320 Valid, 12356 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:32,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-01-10 07:45:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2706. [2022-01-10 07:45:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 2642 states have (on average 1.7668433005299016) internal successors, (4668), 2645 states have internal predecessors, (4668), 37 states have call successors, (37), 24 states have call predecessors, (37), 25 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:45:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 4743 transitions. [2022-01-10 07:45:32,461 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 4743 transitions. Word has length 90 [2022-01-10 07:45:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:32,462 INFO L470 AbstractCegarLoop]: Abstraction has 2706 states and 4743 transitions. [2022-01-10 07:45:32,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 4743 transitions. [2022-01-10 07:45:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:32,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:32,463 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] [2022-01-10 07:45:32,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:32,674 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 07:45:32,675 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:32,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash 281106770, now seen corresponding path program 1 times [2022-01-10 07:45:32,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:32,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665626369] [2022-01-10 07:45:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:32,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:32,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:32,677 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 07:45:32,678 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 07:45:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:32,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:32,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:32,902 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 07:45:32,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:32,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:32,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665626369] [2022-01-10 07:45:32,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665626369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:32,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:32,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:32,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827537099] [2022-01-10 07:45:32,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:32,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:32,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:32,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:32,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:32,905 INFO L87 Difference]: Start difference. First operand 2706 states and 4743 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:33,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:33,190 INFO L93 Difference]: Finished difference Result 3359 states and 5639 transitions. [2022-01-10 07:45:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:33,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:33,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:33,220 INFO L225 Difference]: With dead ends: 3359 [2022-01-10 07:45:33,220 INFO L226 Difference]: Without dead ends: 2786 [2022-01-10 07:45:33,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:33,223 INFO L933 BasicCegarLoop]: 4181 mSDtfsCounter, 4301 mSDsluCounter, 8168 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4313 SdHoareTripleChecker+Valid, 12349 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:33,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4313 Valid, 12349 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2022-01-10 07:45:33,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2022-01-10 07:45:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2716 states have (on average 1.7492636229749632) internal successors, (4751), 2719 states have internal predecessors, (4751), 39 states have call successors, (39), 28 states have call predecessors, (39), 29 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:45:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4830 transitions. [2022-01-10 07:45:33,288 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4830 transitions. Word has length 90 [2022-01-10 07:45:33,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:33,289 INFO L470 AbstractCegarLoop]: Abstraction has 2786 states and 4830 transitions. [2022-01-10 07:45:33,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:33,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4830 transitions. [2022-01-10 07:45:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:33,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:33,290 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] [2022-01-10 07:45:33,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:33,498 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 07:45:33,498 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:33,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1386185175, now seen corresponding path program 1 times [2022-01-10 07:45:33,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:33,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439424372] [2022-01-10 07:45:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:33,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:33,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:33,501 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 07:45:33,534 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 07:45:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:33,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:33,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:33,717 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 07:45:33,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:33,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:33,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439424372] [2022-01-10 07:45:33,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439424372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:33,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:33,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:33,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033075858] [2022-01-10 07:45:33,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:33,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:33,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:33,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:33,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:33,719 INFO L87 Difference]: Start difference. First operand 2786 states and 4830 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:34,003 INFO L93 Difference]: Finished difference Result 3513 states and 5805 transitions. [2022-01-10 07:45:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:34,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:34,012 INFO L225 Difference]: With dead ends: 3513 [2022-01-10 07:45:34,012 INFO L226 Difference]: Without dead ends: 2860 [2022-01-10 07:45:34,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:34,015 INFO L933 BasicCegarLoop]: 4178 mSDtfsCounter, 4294 mSDsluCounter, 8164 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 12342 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:34,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 12342 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:34,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2022-01-10 07:45:34,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2860. [2022-01-10 07:45:34,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2788 states have (on average 1.7317073170731707) internal successors, (4828), 2791 states have internal predecessors, (4828), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:45:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4907 transitions. [2022-01-10 07:45:34,086 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4907 transitions. Word has length 90 [2022-01-10 07:45:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:34,087 INFO L470 AbstractCegarLoop]: Abstraction has 2860 states and 4907 transitions. [2022-01-10 07:45:34,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:34,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4907 transitions. [2022-01-10 07:45:34,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:34,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:34,089 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] [2022-01-10 07:45:34,101 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 07:45:34,298 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 07:45:34,299 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:34,299 INFO L85 PathProgramCache]: Analyzing trace with hash -163430701, now seen corresponding path program 1 times [2022-01-10 07:45:34,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:34,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507124524] [2022-01-10 07:45:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:34,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:34,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:34,301 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 07:45:34,303 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 07:45:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:34,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:34,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:34,520 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 07:45:34,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:34,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:34,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507124524] [2022-01-10 07:45:34,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507124524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:34,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:34,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:45:34,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667260489] [2022-01-10 07:45:34,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:34,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:34,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:34,522 INFO L87 Difference]: Start difference. First operand 2860 states and 4907 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:34,623 INFO L93 Difference]: Finished difference Result 3712 states and 6020 transitions. [2022-01-10 07:45:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:34,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:34,631 INFO L225 Difference]: With dead ends: 3712 [2022-01-10 07:45:34,632 INFO L226 Difference]: Without dead ends: 2986 [2022-01-10 07:45:34,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:34,635 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 166 mSDsluCounter, 12650 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 16847 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:34,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 16847 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:34,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2022-01-10 07:45:34,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2866. [2022-01-10 07:45:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2794 states have (on average 1.72655690765927) internal successors, (4824), 2797 states have internal predecessors, (4824), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:45:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4903 transitions. [2022-01-10 07:45:34,712 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4903 transitions. Word has length 90 [2022-01-10 07:45:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:34,713 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 4903 transitions. [2022-01-10 07:45:34,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4903 transitions. [2022-01-10 07:45:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:34,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:34,714 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] [2022-01-10 07:45:34,727 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 07:45:34,924 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 07:45:34,924 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:34,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1097486549, now seen corresponding path program 1 times [2022-01-10 07:45:34,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:34,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991029599] [2022-01-10 07:45:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:34,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:34,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:34,927 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 07:45:34,928 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 07:45:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:35,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:35,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:35,152 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 07:45:35,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:35,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:35,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991029599] [2022-01-10 07:45:35,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991029599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:35,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:35,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:45:35,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833586324] [2022-01-10 07:45:35,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:35,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:35,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:35,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:35,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:35,154 INFO L87 Difference]: Start difference. First operand 2866 states and 4903 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:35,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:35,322 INFO L93 Difference]: Finished difference Result 3696 states and 5976 transitions. [2022-01-10 07:45:35,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:35,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:35,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:35,331 INFO L225 Difference]: With dead ends: 3696 [2022-01-10 07:45:35,331 INFO L226 Difference]: Without dead ends: 2964 [2022-01-10 07:45:35,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:35,334 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 127 mSDsluCounter, 12635 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 16832 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:35,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 16832 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-01-10 07:45:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2872. [2022-01-10 07:45:35,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2800 states have (on average 1.7214285714285715) internal successors, (4820), 2803 states have internal predecessors, (4820), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:45:35,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 4899 transitions. [2022-01-10 07:45:35,419 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 4899 transitions. Word has length 90 [2022-01-10 07:45:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:35,420 INFO L470 AbstractCegarLoop]: Abstraction has 2872 states and 4899 transitions. [2022-01-10 07:45:35,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 4899 transitions. [2022-01-10 07:45:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:35,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:35,421 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] [2022-01-10 07:45:35,434 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 07:45:35,630 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 07:45:35,630 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash -931099561, now seen corresponding path program 1 times [2022-01-10 07:45:35,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:35,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398223078] [2022-01-10 07:45:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:35,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:35,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:35,632 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 07:45:35,633 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 07:45:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:35,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:35,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:35,873 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 07:45:35,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:35,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:35,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398223078] [2022-01-10 07:45:35,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398223078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:35,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:35,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:45:35,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368442838] [2022-01-10 07:45:35,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:35,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:35,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:35,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:35,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:35,875 INFO L87 Difference]: Start difference. First operand 2872 states and 4899 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:35,969 INFO L93 Difference]: Finished difference Result 3680 states and 5932 transitions. [2022-01-10 07:45:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:35,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:35,977 INFO L225 Difference]: With dead ends: 3680 [2022-01-10 07:45:35,977 INFO L226 Difference]: Without dead ends: 2942 [2022-01-10 07:45:35,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:35,980 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 88 mSDsluCounter, 12620 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 16817 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:35,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 16817 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2022-01-10 07:45:36,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2878. [2022-01-10 07:45:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2806 states have (on average 1.7163221667854598) internal successors, (4816), 2809 states have internal predecessors, (4816), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:45:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 4895 transitions. [2022-01-10 07:45:36,053 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 4895 transitions. Word has length 90 [2022-01-10 07:45:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:36,054 INFO L470 AbstractCegarLoop]: Abstraction has 2878 states and 4895 transitions. [2022-01-10 07:45:36,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 4895 transitions. [2022-01-10 07:45:36,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:36,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:36,055 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] [2022-01-10 07:45:36,070 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 07:45:36,270 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 07:45:36,270 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash -37613223, now seen corresponding path program 1 times [2022-01-10 07:45:36,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:36,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363193493] [2022-01-10 07:45:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:36,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:36,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:36,273 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 07:45:36,273 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 07:45:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:36,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:36,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:36,471 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 07:45:36,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:36,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:36,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363193493] [2022-01-10 07:45:36,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363193493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:36,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:36,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:45:36,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041315483] [2022-01-10 07:45:36,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:36,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:36,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:36,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:36,473 INFO L87 Difference]: Start difference. First operand 2878 states and 4895 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:36,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:36,569 INFO L93 Difference]: Finished difference Result 3664 states and 5888 transitions. [2022-01-10 07:45:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:45:36,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:36,577 INFO L225 Difference]: With dead ends: 3664 [2022-01-10 07:45:36,577 INFO L226 Difference]: Without dead ends: 2920 [2022-01-10 07:45:36,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:45:36,580 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 49 mSDsluCounter, 12605 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16802 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:36,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 16802 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2022-01-10 07:45:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2884. [2022-01-10 07:45:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2812 states have (on average 1.7112375533428166) internal successors, (4812), 2815 states have internal predecessors, (4812), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:45:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4891 transitions. [2022-01-10 07:45:36,653 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4891 transitions. Word has length 90 [2022-01-10 07:45:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:36,653 INFO L470 AbstractCegarLoop]: Abstraction has 2884 states and 4891 transitions. [2022-01-10 07:45:36,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4891 transitions. [2022-01-10 07:45:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:36,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:36,654 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] [2022-01-10 07:45:36,666 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 07:45:36,864 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 07:45:36,864 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:36,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1882980389, now seen corresponding path program 1 times [2022-01-10 07:45:36,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:36,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204518559] [2022-01-10 07:45:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:36,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:36,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:36,867 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 07:45:36,869 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 07:45:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:36,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:45:36,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:37,103 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 07:45:37,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:37,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:37,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204518559] [2022-01-10 07:45:37,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204518559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:37,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:37,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:37,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489049721] [2022-01-10 07:45:37,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:37,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:45:37,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:45:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:37,106 INFO L87 Difference]: Start difference. First operand 2884 states and 4891 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:37,339 INFO L93 Difference]: Finished difference Result 3635 states and 5813 transitions. [2022-01-10 07:45:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:45:37,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:45:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:37,346 INFO L225 Difference]: With dead ends: 3635 [2022-01-10 07:45:37,346 INFO L226 Difference]: Without dead ends: 2884 [2022-01-10 07:45:37,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:45:37,351 INFO L933 BasicCegarLoop]: 4176 mSDtfsCounter, 4208 mSDsluCounter, 8161 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 12337 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:37,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4219 Valid, 12337 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:45:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2022-01-10 07:45:37,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2884. [2022-01-10 07:45:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2812 states have (on average 1.7087482219061167) internal successors, (4805), 2815 states have internal predecessors, (4805), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:45:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4884 transitions. [2022-01-10 07:45:37,426 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4884 transitions. Word has length 90 [2022-01-10 07:45:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:37,427 INFO L470 AbstractCegarLoop]: Abstraction has 2884 states and 4884 transitions. [2022-01-10 07:45:37,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:45:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4884 transitions. [2022-01-10 07:45:37,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:45:37,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:37,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:37,437 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 07:45:37,637 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 07:45:37,638 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:37,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1742431779, now seen corresponding path program 1 times [2022-01-10 07:45:37,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:37,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315438306] [2022-01-10 07:45:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:37,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:37,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:37,640 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 07:45:37,640 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 07:45:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:37,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:45:37,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:37,885 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 07:45:37,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:37,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:37,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315438306] [2022-01-10 07:45:37,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315438306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:37,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:37,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:45:37,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327067748] [2022-01-10 07:45:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:37,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:45:37,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:45:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:37,887 INFO L87 Difference]: Start difference. First operand 2884 states and 4884 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:45:37,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:37,991 INFO L93 Difference]: Finished difference Result 4357 states and 6685 transitions. [2022-01-10 07:45:37,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:45:37,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 90 [2022-01-10 07:45:37,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:38,000 INFO L225 Difference]: With dead ends: 4357 [2022-01-10 07:45:38,001 INFO L226 Difference]: Without dead ends: 3607 [2022-01-10 07:45:38,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 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 07:45:38,006 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 4099 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4099 SdHoareTripleChecker+Valid, 4452 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 07:45:38,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4099 Valid, 4452 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2022-01-10 07:45:38,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3605. [2022-01-10 07:45:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3605 states, 3467 states have (on average 1.6120565330256706) internal successors, (5589), 3473 states have internal predecessors, (5589), 74 states have call successors, (74), 60 states have call predecessors, (74), 62 states have return successors, (76), 72 states have call predecessors, (76), 74 states have call successors, (76) [2022-01-10 07:45:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 5739 transitions. [2022-01-10 07:45:38,218 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 5739 transitions. Word has length 90 [2022-01-10 07:45:38,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:38,218 INFO L470 AbstractCegarLoop]: Abstraction has 3605 states and 5739 transitions. [2022-01-10 07:45:38,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:45:38,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 5739 transitions. [2022-01-10 07:45:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 07:45:38,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:38,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:38,233 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 07:45:38,431 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 07:45:38,431 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:38,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 502002518, now seen corresponding path program 1 times [2022-01-10 07:45:38,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:38,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034801830] [2022-01-10 07:45:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:38,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:38,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:38,434 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 07:45:38,437 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 07:45:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:38,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:45:38,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:45:38,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:38,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:38,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034801830] [2022-01-10 07:45:38,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034801830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:38,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:38,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:38,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773177908] [2022-01-10 07:45:38,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:38,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:45:38,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:38,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:45:38,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:45:38,800 INFO L87 Difference]: Start difference. First operand 3605 states and 5739 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:45:39,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:39,136 INFO L93 Difference]: Finished difference Result 6427 states and 9125 transitions. [2022-01-10 07:45:39,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:39,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 146 [2022-01-10 07:45:39,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:39,152 INFO L225 Difference]: With dead ends: 6427 [2022-01-10 07:45:39,152 INFO L226 Difference]: Without dead ends: 4957 [2022-01-10 07:45:39,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:39,158 INFO L933 BasicCegarLoop]: 4227 mSDtfsCounter, 4241 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 8502 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:39,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4247 Valid, 8502 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:39,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2022-01-10 07:45:39,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 4955. [2022-01-10 07:45:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4955 states, 4693 states have (on average 1.5020242914979758) internal successors, (7049), 4707 states have internal predecessors, (7049), 136 states have call successors, (136), 112 states have call predecessors, (136), 124 states have return successors, (160), 136 states have call predecessors, (160), 136 states have call successors, (160) [2022-01-10 07:45:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4955 states to 4955 states and 7345 transitions. [2022-01-10 07:45:39,390 INFO L78 Accepts]: Start accepts. Automaton has 4955 states and 7345 transitions. Word has length 146 [2022-01-10 07:45:39,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:39,390 INFO L470 AbstractCegarLoop]: Abstraction has 4955 states and 7345 transitions. [2022-01-10 07:45:39,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:45:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4955 states and 7345 transitions. [2022-01-10 07:45:39,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 07:45:39,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:39,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:39,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 07:45:39,603 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 07:45:39,604 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:39,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:39,604 INFO L85 PathProgramCache]: Analyzing trace with hash 867765611, now seen corresponding path program 1 times [2022-01-10 07:45:39,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:39,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942492151] [2022-01-10 07:45:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:39,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:39,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:39,606 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 07:45:39,608 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 07:45:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:39,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:45:39,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:45:40,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:40,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:40,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942492151] [2022-01-10 07:45:40,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942492151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:40,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:40,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:40,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527210699] [2022-01-10 07:45:40,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:40,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:45:40,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:40,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:45:40,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:45:40,037 INFO L87 Difference]: Start difference. First operand 4955 states and 7345 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:45:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:40,429 INFO L93 Difference]: Finished difference Result 10253 states and 13682 transitions. [2022-01-10 07:45:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:40,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 147 [2022-01-10 07:45:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:40,457 INFO L225 Difference]: With dead ends: 10253 [2022-01-10 07:45:40,457 INFO L226 Difference]: Without dead ends: 7433 [2022-01-10 07:45:40,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:40,467 INFO L933 BasicCegarLoop]: 4267 mSDtfsCounter, 4231 mSDsluCounter, 4307 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 8574 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:40,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 8574 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2022-01-10 07:45:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 7431. [2022-01-10 07:45:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7431 states, 6934 states have (on average 1.400922988174214) internal successors, (9714), 6965 states have internal predecessors, (9714), 255 states have call successors, (255), 208 states have call predecessors, (255), 240 states have return successors, (323), 259 states have call predecessors, (323), 255 states have call successors, (323) [2022-01-10 07:45:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7431 states to 7431 states and 10292 transitions. [2022-01-10 07:45:40,930 INFO L78 Accepts]: Start accepts. Automaton has 7431 states and 10292 transitions. Word has length 147 [2022-01-10 07:45:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:40,930 INFO L470 AbstractCegarLoop]: Abstraction has 7431 states and 10292 transitions. [2022-01-10 07:45:40,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:45:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 7431 states and 10292 transitions. [2022-01-10 07:45:40,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 07:45:40,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:40,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:40,947 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 07:45:41,146 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 07:45:41,146 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash 937413485, now seen corresponding path program 1 times [2022-01-10 07:45:41,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:41,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391250313] [2022-01-10 07:45:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:41,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:41,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:41,148 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 07:45:41,150 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 07:45:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:41,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:45:41,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:45:41,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:41,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:41,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391250313] [2022-01-10 07:45:41,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391250313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:41,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:41,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:45:41,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507209996] [2022-01-10 07:45:41,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:41,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:45:41,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:45:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:41,419 INFO L87 Difference]: Start difference. First operand 7431 states and 10292 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:41,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:41,681 INFO L93 Difference]: Finished difference Result 12721 states and 16593 transitions. [2022-01-10 07:45:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:45:41,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-01-10 07:45:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:41,703 INFO L225 Difference]: With dead ends: 12721 [2022-01-10 07:45:41,703 INFO L226 Difference]: Without dead ends: 7425 [2022-01-10 07:45:41,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 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 07:45:41,716 INFO L933 BasicCegarLoop]: 4195 mSDtfsCounter, 229 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 8153 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 07:45:41,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 8153 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:41,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7425 states. [2022-01-10 07:45:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 7425. [2022-01-10 07:45:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7425 states, 6931 states have (on average 1.4006636848939547) internal successors, (9708), 6961 states have internal predecessors, (9708), 252 states have call successors, (252), 208 states have call predecessors, (252), 240 states have return successors, (320), 256 states have call predecessors, (320), 252 states have call successors, (320) [2022-01-10 07:45:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7425 states to 7425 states and 10280 transitions. [2022-01-10 07:45:42,057 INFO L78 Accepts]: Start accepts. Automaton has 7425 states and 10280 transitions. Word has length 147 [2022-01-10 07:45:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:42,057 INFO L470 AbstractCegarLoop]: Abstraction has 7425 states and 10280 transitions. [2022-01-10 07:45:42,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 7425 states and 10280 transitions. [2022-01-10 07:45:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 07:45:42,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:42,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:42,073 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 07:45:42,273 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 07:45:42,273 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1954017798, now seen corresponding path program 1 times [2022-01-10 07:45:42,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:42,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665863229] [2022-01-10 07:45:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:42,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:42,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:42,275 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 07:45:42,311 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 07:45:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:42,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:45:42,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:45:42,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:42,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:42,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665863229] [2022-01-10 07:45:42,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665863229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:42,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:42,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:42,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442623322] [2022-01-10 07:45:42,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:42,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:45:42,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:42,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:45:42,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:45:42,659 INFO L87 Difference]: Start difference. First operand 7425 states and 10280 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:45:43,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:43,439 INFO L93 Difference]: Finished difference Result 17318 states and 22083 transitions. [2022-01-10 07:45:43,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:43,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 148 [2022-01-10 07:45:43,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:43,476 INFO L225 Difference]: With dead ends: 17318 [2022-01-10 07:45:43,476 INFO L226 Difference]: Without dead ends: 12028 [2022-01-10 07:45:43,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:43,494 INFO L933 BasicCegarLoop]: 4256 mSDtfsCounter, 4224 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4230 SdHoareTripleChecker+Valid, 8540 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:43,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4230 Valid, 8540 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12028 states. [2022-01-10 07:45:44,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12028 to 12026. [2022-01-10 07:45:44,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12026 states, 11089 states have (on average 1.3204977906033006) internal successors, (14643), 11156 states have internal predecessors, (14643), 471 states have call successors, (471), 384 states have call predecessors, (471), 464 states have return successors, (635), 487 states have call predecessors, (635), 471 states have call successors, (635) [2022-01-10 07:45:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12026 states to 12026 states and 15749 transitions. [2022-01-10 07:45:44,205 INFO L78 Accepts]: Start accepts. Automaton has 12026 states and 15749 transitions. Word has length 148 [2022-01-10 07:45:44,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:44,205 INFO L470 AbstractCegarLoop]: Abstraction has 12026 states and 15749 transitions. [2022-01-10 07:45:44,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:45:44,206 INFO L276 IsEmpty]: Start isEmpty. Operand 12026 states and 15749 transitions. [2022-01-10 07:45:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 07:45:44,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:44,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:44,227 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 07:45:44,423 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 07:45:44,423 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:44,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:44,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1884369924, now seen corresponding path program 1 times [2022-01-10 07:45:44,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:44,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207083229] [2022-01-10 07:45:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:44,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:44,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:44,426 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 07:45:44,428 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 07:45:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:44,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:45:44,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:45:44,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:44,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:44,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207083229] [2022-01-10 07:45:44,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207083229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:44,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:44,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:45:44,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524047697] [2022-01-10 07:45:44,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:44,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:45:44,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:44,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:45:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:44,745 INFO L87 Difference]: Start difference. First operand 12026 states and 15749 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:45,207 INFO L93 Difference]: Finished difference Result 21912 states and 27510 transitions. [2022-01-10 07:45:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:45:45,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2022-01-10 07:45:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:45,236 INFO L225 Difference]: With dead ends: 21912 [2022-01-10 07:45:45,236 INFO L226 Difference]: Without dead ends: 12021 [2022-01-10 07:45:45,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 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 07:45:45,259 INFO L933 BasicCegarLoop]: 4194 mSDtfsCounter, 227 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 8152 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 07:45:45,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 8152 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12021 states. [2022-01-10 07:45:45,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12021 to 12021. [2022-01-10 07:45:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12021 states, 11087 states have (on average 1.3203752142148462) internal successors, (14639), 11153 states have internal predecessors, (14639), 468 states have call successors, (468), 384 states have call predecessors, (468), 464 states have return successors, (632), 484 states have call predecessors, (632), 468 states have call successors, (632) [2022-01-10 07:45:45,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 15739 transitions. [2022-01-10 07:45:45,983 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 15739 transitions. Word has length 148 [2022-01-10 07:45:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:45,984 INFO L470 AbstractCegarLoop]: Abstraction has 12021 states and 15739 transitions. [2022-01-10 07:45:45,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 15739 transitions. [2022-01-10 07:45:45,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 07:45:45,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:45,994 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:46,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 07:45:46,204 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 07:45:46,204 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash 585316039, now seen corresponding path program 1 times [2022-01-10 07:45:46,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:46,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350408933] [2022-01-10 07:45:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:46,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:46,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:46,207 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 07:45:46,209 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 07:45:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:46,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:45:46,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:45:46,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:46,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:46,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350408933] [2022-01-10 07:45:46,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350408933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:46,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:46,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:46,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548003713] [2022-01-10 07:45:46,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:46,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:45:46,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:46,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:45:46,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:45:46,560 INFO L87 Difference]: Start difference. First operand 12021 states and 15739 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:45:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:47,508 INFO L93 Difference]: Finished difference Result 30933 states and 38141 transitions. [2022-01-10 07:45:47,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:45:47,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 149 [2022-01-10 07:45:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:47,558 INFO L225 Difference]: With dead ends: 30933 [2022-01-10 07:45:47,558 INFO L226 Difference]: Without dead ends: 21047 [2022-01-10 07:45:47,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:45:47,574 INFO L933 BasicCegarLoop]: 4252 mSDtfsCounter, 4224 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4230 SdHoareTripleChecker+Valid, 8514 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:47,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4230 Valid, 8514 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:45:47,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21047 states. [2022-01-10 07:45:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21047 to 20821. [2022-01-10 07:45:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20821 states, 18828 states have (on average 1.2615253877204164) internal successors, (23752), 19103 states have internal predecessors, (23752), 871 states have call successors, (871), 704 states have call predecessors, (871), 1120 states have return successors, (1484), 1015 states have call predecessors, (1484), 871 states have call successors, (1484) [2022-01-10 07:45:48,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20821 states to 20821 states and 26107 transitions. [2022-01-10 07:45:48,542 INFO L78 Accepts]: Start accepts. Automaton has 20821 states and 26107 transitions. Word has length 149 [2022-01-10 07:45:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:48,543 INFO L470 AbstractCegarLoop]: Abstraction has 20821 states and 26107 transitions. [2022-01-10 07:45:48,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:45:48,543 INFO L276 IsEmpty]: Start isEmpty. Operand 20821 states and 26107 transitions. [2022-01-10 07:45:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 07:45:48,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:48,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:48,569 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 07:45:48,765 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 07:45:48,765 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:48,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash 654963913, now seen corresponding path program 1 times [2022-01-10 07:45:48,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:48,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190536323] [2022-01-10 07:45:48,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:48,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:48,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:48,767 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 07:45:48,768 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 07:45:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:48,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:45:48,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:45:49,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:49,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:49,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190536323] [2022-01-10 07:45:49,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190536323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:49,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:49,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:45:49,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336619760] [2022-01-10 07:45:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:49,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:45:49,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:45:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:49,108 INFO L87 Difference]: Start difference. First operand 20821 states and 26107 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:49,810 INFO L93 Difference]: Finished difference Result 39504 states and 48230 transitions. [2022-01-10 07:45:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:45:49,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 149 [2022-01-10 07:45:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:49,867 INFO L225 Difference]: With dead ends: 39504 [2022-01-10 07:45:49,867 INFO L226 Difference]: Without dead ends: 20817 [2022-01-10 07:45:49,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 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 07:45:49,901 INFO L933 BasicCegarLoop]: 4193 mSDtfsCounter, 225 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 8151 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 07:45:49,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 8151 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20817 states. [2022-01-10 07:45:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20817 to 20817. [2022-01-10 07:45:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20817 states, 18827 states have (on average 1.2614861634886068) internal successors, (23750), 19101 states have internal predecessors, (23750), 868 states have call successors, (868), 704 states have call predecessors, (868), 1120 states have return successors, (1480), 1012 states have call predecessors, (1480), 868 states have call successors, (1480) [2022-01-10 07:45:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20817 states to 20817 states and 26098 transitions. [2022-01-10 07:45:50,845 INFO L78 Accepts]: Start accepts. Automaton has 20817 states and 26098 transitions. Word has length 149 [2022-01-10 07:45:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:50,845 INFO L470 AbstractCegarLoop]: Abstraction has 20817 states and 26098 transitions. [2022-01-10 07:45:50,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:45:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 20817 states and 26098 transitions. [2022-01-10 07:45:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 07:45:50,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:50,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:45:50,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:51,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:51,066 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:51,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:51,066 INFO L85 PathProgramCache]: Analyzing trace with hash 881078430, now seen corresponding path program 1 times [2022-01-10 07:45:51,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:51,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932880156] [2022-01-10 07:45:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:51,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:51,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:51,068 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:51,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:45:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:51,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:45:51,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:45:51,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:51,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:51,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932880156] [2022-01-10 07:45:51,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932880156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:51,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:51,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:45:51,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231421681] [2022-01-10 07:45:51,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:51,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:45:51,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:51,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:45:51,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:51,342 INFO L87 Difference]: Start difference. First operand 20817 states and 26098 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 07:45:52,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:52,649 INFO L93 Difference]: Finished difference Result 54027 states and 65646 transitions. [2022-01-10 07:45:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:45:52,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 150 [2022-01-10 07:45:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:52,743 INFO L225 Difference]: With dead ends: 54027 [2022-01-10 07:45:52,744 INFO L226 Difference]: Without dead ends: 28149 [2022-01-10 07:45:52,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 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 07:45:52,782 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 197 mSDsluCounter, 4185 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8579 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:45:52,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 8579 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28149 states. [2022-01-10 07:45:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28149 to 28149. [2022-01-10 07:45:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28149 states, 25375 states have (on average 1.2396059113300493) internal successors, (31455), 25729 states have internal predecessors, (31455), 1236 states have call successors, (1236), 992 states have call predecessors, (1236), 1536 states have return successors, (2106), 1428 states have call predecessors, (2106), 1236 states have call successors, (2106) [2022-01-10 07:45:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28149 states to 28149 states and 34797 transitions. [2022-01-10 07:45:54,073 INFO L78 Accepts]: Start accepts. Automaton has 28149 states and 34797 transitions. Word has length 150 [2022-01-10 07:45:54,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:54,073 INFO L470 AbstractCegarLoop]: Abstraction has 28149 states and 34797 transitions. [2022-01-10 07:45:54,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 07:45:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand 28149 states and 34797 transitions. [2022-01-10 07:45:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-10 07:45:54,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:54,092 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 07:45:54,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:45:54,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:54,302 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:54,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:54,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1101915208, now seen corresponding path program 1 times [2022-01-10 07:45:54,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:54,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886601563] [2022-01-10 07:45:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:54,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:54,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:54,304 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:54,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:45:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:54,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:45:54,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:45:54,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:54,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:54,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886601563] [2022-01-10 07:45:54,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886601563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:54,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:54,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:45:54,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897304343] [2022-01-10 07:45:54,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:54,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:45:54,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:54,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:45:54,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:45:54,716 INFO L87 Difference]: Start difference. First operand 28149 states and 34797 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:45:56,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:45:56,164 INFO L93 Difference]: Finished difference Result 61488 states and 74497 transitions. [2022-01-10 07:45:56,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:45:56,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 193 [2022-01-10 07:45:56,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:45:56,236 INFO L225 Difference]: With dead ends: 61488 [2022-01-10 07:45:56,236 INFO L226 Difference]: Without dead ends: 35473 [2022-01-10 07:45:56,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 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 07:45:56,268 INFO L933 BasicCegarLoop]: 4204 mSDtfsCounter, 4067 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 4414 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 07:45:56,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4067 Valid, 4414 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:45:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35473 states. [2022-01-10 07:45:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35473 to 35377. [2022-01-10 07:45:58,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35377 states, 31883 states have (on average 1.2224382899978046) internal successors, (38975), 32277 states have internal predecessors, (38975), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1888 states have return successors, (2622), 1820 states have call predecessors, (2622), 1604 states have call successors, (2622) [2022-01-10 07:45:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35377 states to 35377 states and 43201 transitions. [2022-01-10 07:45:58,069 INFO L78 Accepts]: Start accepts. Automaton has 35377 states and 43201 transitions. Word has length 193 [2022-01-10 07:45:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:45:58,069 INFO L470 AbstractCegarLoop]: Abstraction has 35377 states and 43201 transitions. [2022-01-10 07:45:58,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:45:58,070 INFO L276 IsEmpty]: Start isEmpty. Operand 35377 states and 43201 transitions. [2022-01-10 07:45:58,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-10 07:45:58,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:45:58,093 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 07:45:58,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 07:45:58,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:45:58,293 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:45:58,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:45:58,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1408212969, now seen corresponding path program 1 times [2022-01-10 07:45:58,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:45:58,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584936590] [2022-01-10 07:45:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:45:58,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:45:58,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:45:58,295 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:45:58,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:45:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:45:58,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:45:58,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:45:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-01-10 07:45:58,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:45:58,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:45:58,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584936590] [2022-01-10 07:45:58,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584936590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:45:58,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:45:58,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:45:58,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547124560] [2022-01-10 07:45:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:45:58,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:45:58,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:45:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:45:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:45:58,677 INFO L87 Difference]: Start difference. First operand 35377 states and 43201 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 07:46:00,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:46:00,299 INFO L93 Difference]: Finished difference Result 68981 states and 83002 transitions. [2022-01-10 07:46:00,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:46:00,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 215 [2022-01-10 07:46:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:46:00,491 INFO L225 Difference]: With dead ends: 68981 [2022-01-10 07:46:00,491 INFO L226 Difference]: Without dead ends: 35739 [2022-01-10 07:46:00,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:46:00,529 INFO L933 BasicCegarLoop]: 4195 mSDtfsCounter, 4242 mSDsluCounter, 4254 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4248 SdHoareTripleChecker+Valid, 8449 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:46:00,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4248 Valid, 8449 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:46:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35739 states. [2022-01-10 07:46:02,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35739 to 35739. [2022-01-10 07:46:02,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35739 states, 32213 states have (on average 1.215378884301369) internal successors, (39151), 32623 states have internal predecessors, (39151), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1920 states have return successors, (2400), 1836 states have call predecessors, (2400), 1604 states have call successors, (2400) [2022-01-10 07:46:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35739 states to 35739 states and 43155 transitions. [2022-01-10 07:46:02,299 INFO L78 Accepts]: Start accepts. Automaton has 35739 states and 43155 transitions. Word has length 215 [2022-01-10 07:46:02,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:46:02,301 INFO L470 AbstractCegarLoop]: Abstraction has 35739 states and 43155 transitions. [2022-01-10 07:46:02,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 07:46:02,301 INFO L276 IsEmpty]: Start isEmpty. Operand 35739 states and 43155 transitions. [2022-01-10 07:46:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-10 07:46:02,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:46:02,326 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 07:46:02,333 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 07:46:02,526 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 07:46:02,526 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:46:02,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:46:02,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1097036936, now seen corresponding path program 1 times [2022-01-10 07:46:02,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:46:02,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215868701] [2022-01-10 07:46:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:46:02,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:46:02,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:46:02,529 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 07:46:02,530 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 07:46:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:46:02,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:46:02,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:46:02,937 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:46:02,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:46:02,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:46:02,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215868701] [2022-01-10 07:46:02,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215868701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:46:02,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:46:02,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:46:02,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310388834] [2022-01-10 07:46:02,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:46:02,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:46:02,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:46:02,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:46:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:46:02,939 INFO L87 Difference]: Start difference. First operand 35739 states and 43155 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 07:46:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:46:04,572 INFO L93 Difference]: Finished difference Result 62209 states and 75320 transitions. [2022-01-10 07:46:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:46:04,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 216 [2022-01-10 07:46:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:46:04,652 INFO L225 Difference]: With dead ends: 62209 [2022-01-10 07:46:04,652 INFO L226 Difference]: Without dead ends: 35803 [2022-01-10 07:46:04,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 214 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 07:46:04,689 INFO L933 BasicCegarLoop]: 4383 mSDtfsCounter, 146 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 8551 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:46:04,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 8551 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:46:04,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35803 states. [2022-01-10 07:46:06,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35803 to 35739. [2022-01-10 07:46:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35739 states, 32213 states have (on average 1.1984912923353925) internal successors, (38607), 32623 states have internal predecessors, (38607), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1920 states have return successors, (2400), 1836 states have call predecessors, (2400), 1604 states have call successors, (2400) [2022-01-10 07:46:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35739 states to 35739 states and 42611 transitions. [2022-01-10 07:46:06,270 INFO L78 Accepts]: Start accepts. Automaton has 35739 states and 42611 transitions. Word has length 216 [2022-01-10 07:46:06,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:46:06,270 INFO L470 AbstractCegarLoop]: Abstraction has 35739 states and 42611 transitions. [2022-01-10 07:46:06,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 07:46:06,270 INFO L276 IsEmpty]: Start isEmpty. Operand 35739 states and 42611 transitions. [2022-01-10 07:46:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-10 07:46:06,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:46:06,289 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:46:06,297 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 07:46:06,489 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 07:46:06,490 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:46:06,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:46:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash 181079622, now seen corresponding path program 1 times [2022-01-10 07:46:06,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:46:06,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024252929] [2022-01-10 07:46:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:46:06,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:46:06,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:46:06,492 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 07:46:06,493 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 07:46:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:46:06,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:46:06,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:46:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:46:06,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:46:06,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:46:06,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024252929] [2022-01-10 07:46:06,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024252929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:46:06,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:46:06,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:46:06,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412702811] [2022-01-10 07:46:06,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:46:06,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:46:06,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:46:06,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:46:06,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:46:06,829 INFO L87 Difference]: Start difference. First operand 35739 states and 42611 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)