/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_label40+token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:37:28,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:37:28,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:37:28,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:37:28,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:37:28,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:37:28,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:37:28,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:37:28,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:37:28,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:37:28,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:37:28,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:37:28,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:37:28,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:37:28,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:37:28,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:37:28,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:37:28,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:37:28,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:37:28,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:37:28,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:37:28,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:37:28,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:37:28,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:37:28,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:37:28,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:37:28,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:37:28,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:37:28,539 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 07:37:28,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:37:28,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:37:28,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:37:28,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:37:28,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:37:28,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:37:28,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:37:28,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:37:28,563 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:37:28,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:37:28,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:37:28,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:37:28,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:37:28,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:37:28,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:37:28,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:37:28,564 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:37:28,565 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:37:28,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:37:28,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:37:28,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:37:28,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:37:28,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:37:28,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:37:28,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:37:28,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:37:28,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:37:28,566 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:37:28,567 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:37:28,567 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:37:28,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:37:28,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:37:28,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:37:28,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:37:28,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:37:28,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:37:28,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:37:28,771 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:37:28,772 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:37:28,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.03.cil-2.c [2022-01-10 07:37:28,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4ea856f0/73ff61f2e00d4388a59c9cb15740d4dc/FLAG4a00bbb10 [2022-01-10 07:37:29,496 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:37:29,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.03.cil-2.c [2022-01-10 07:37:29,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4ea856f0/73ff61f2e00d4388a59c9cb15740d4dc/FLAG4a00bbb10 [2022-01-10 07:37:29,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4ea856f0/73ff61f2e00d4388a59c9cb15740d4dc [2022-01-10 07:37:29,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:37:29,600 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:37:29,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:37:29,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:37:29,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:37:29,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:37:29" (1/1) ... [2022-01-10 07:37:29,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5394be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:29, skipping insertion in model container [2022-01-10 07:37:29,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:37:29" (1/1) ... [2022-01-10 07:37:29,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:37:29,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:37:30,884 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_label40+token_ring.03.cil-2.c[377069,377082] [2022-01-10 07:37:30,907 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_label40+token_ring.03.cil-2.c[383339,383352] [2022-01-10 07:37:31,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:37:31,074 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:37:31,658 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_label40+token_ring.03.cil-2.c[377069,377082] [2022-01-10 07:37:31,664 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_label40+token_ring.03.cil-2.c[383339,383352] [2022-01-10 07:37:31,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:37:31,720 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:37:31,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31 WrapperNode [2022-01-10 07:37:31,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:37:31,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:37:31,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:37:31,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:37:31,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (1/1) ... [2022-01-10 07:37:31,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (1/1) ... [2022-01-10 07:37:32,002 INFO L137 Inliner]: procedures = 51, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12653 [2022-01-10 07:37:32,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:37:32,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:37:32,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:37:32,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:37:32,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (1/1) ... [2022-01-10 07:37:32,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (1/1) ... [2022-01-10 07:37:32,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (1/1) ... [2022-01-10 07:37:32,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (1/1) ... [2022-01-10 07:37:32,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (1/1) ... [2022-01-10 07:37:32,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (1/1) ... [2022-01-10 07:37:32,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (1/1) ... [2022-01-10 07:37:32,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:37:32,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:37:32,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:37:32,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:37:32,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (1/1) ... [2022-01-10 07:37:32,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:37:32,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:37:32,615 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 07:37:32,633 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 07:37:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:37:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:37:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:37:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:37:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:37:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:37:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:37:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:37:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:37:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:37:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:37:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:37:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:37:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:37:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:37:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:37:32,773 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:37:32,775 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:37:38,956 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:37:38,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:37:38,993 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-10 07:37:38,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:37:38 BoogieIcfgContainer [2022-01-10 07:37:38,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:37:39,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:37:39,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:37:39,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:37:39,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:37:29" (1/3) ... [2022-01-10 07:37:39,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286ef2ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:37:39, skipping insertion in model container [2022-01-10 07:37:39,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:37:31" (2/3) ... [2022-01-10 07:37:39,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286ef2ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:37:39, skipping insertion in model container [2022-01-10 07:37:39,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:37:38" (3/3) ... [2022-01-10 07:37:39,005 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.03.cil-2.c [2022-01-10 07:37:39,008 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:37:39,009 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:37:39,061 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:37:39,066 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 07:37:39,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:37:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-10 07:37:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:39,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:39,123 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] [2022-01-10 07:37:39,124 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:39,128 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-01-10 07:37:39,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:39,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713300417] [2022-01-10 07:37:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:39,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:39,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:39,157 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 07:37:39,158 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 07:37:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:39,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:39,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:39,456 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 07:37:39,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:39,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:39,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713300417] [2022-01-10 07:37:39,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713300417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:39,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:39,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:39,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219333852] [2022-01-10 07:37:39,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:39,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:39,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:39,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:39,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:39,497 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 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 07:37:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:39,888 INFO L93 Difference]: Finished difference Result 4825 states and 8889 transitions. [2022-01-10 07:37:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:37:39,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:39,905 INFO L225 Difference]: With dead ends: 4825 [2022-01-10 07:37:39,905 INFO L226 Difference]: Without dead ends: 2426 [2022-01-10 07:37:39,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 07:37:39,913 INFO L933 BasicCegarLoop]: 4268 mSDtfsCounter, 4408 mSDsluCounter, 8488 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4419 SdHoareTripleChecker+Valid, 12756 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:39,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4419 Valid, 12756 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:37:39,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2022-01-10 07:37:40,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2415. [2022-01-10 07:37:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2022-01-10 07:37:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4396 transitions. [2022-01-10 07:37:40,039 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4396 transitions. Word has length 79 [2022-01-10 07:37:40,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:40,039 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 4396 transitions. [2022-01-10 07:37:40,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 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 07:37:40,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4396 transitions. [2022-01-10 07:37:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:40,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:40,043 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] [2022-01-10 07:37:40,052 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 07:37:40,250 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 07:37:40,250 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:40,251 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-01-10 07:37:40,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:40,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445745179] [2022-01-10 07:37:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:40,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:40,253 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 07:37:40,281 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 07:37:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:40,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:40,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:40,462 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 07:37:40,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:40,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:40,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445745179] [2022-01-10 07:37:40,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445745179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:40,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:40,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:40,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948462572] [2022-01-10 07:37:40,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:40,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:40,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:40,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:40,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:40,465 INFO L87 Difference]: Start difference. First operand 2415 states and 4396 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:40,676 INFO L93 Difference]: Finished difference Result 2698 states and 4824 transitions. [2022-01-10 07:37:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:37:40,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:40,685 INFO L225 Difference]: With dead ends: 2698 [2022-01-10 07:37:40,685 INFO L226 Difference]: Without dead ends: 2415 [2022-01-10 07:37:40,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 07:37:40,688 INFO L933 BasicCegarLoop]: 4161 mSDtfsCounter, 4236 mSDsluCounter, 8149 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 12310 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:40,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4247 Valid, 12310 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:37:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2022-01-10 07:37:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2415. [2022-01-10 07:37:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.826233656684943) internal successors, (4330), 2374 states have internal predecessors, (4330), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2022-01-10 07:37:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4389 transitions. [2022-01-10 07:37:40,741 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4389 transitions. Word has length 79 [2022-01-10 07:37:40,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:40,742 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 4389 transitions. [2022-01-10 07:37:40,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4389 transitions. [2022-01-10 07:37:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:40,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:40,744 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] [2022-01-10 07:37:40,767 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 07:37:40,951 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 07:37:40,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:40,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:40,952 INFO L85 PathProgramCache]: Analyzing trace with hash 444750980, now seen corresponding path program 1 times [2022-01-10 07:37:40,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:40,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914901021] [2022-01-10 07:37:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:40,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:40,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:40,954 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 07:37:40,956 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 07:37:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:41,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:41,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:41,146 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 07:37:41,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:41,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:41,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914901021] [2022-01-10 07:37:41,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914901021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:41,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:41,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:41,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709771647] [2022-01-10 07:37:41,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:41,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:41,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:41,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:41,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:41,148 INFO L87 Difference]: Start difference. First operand 2415 states and 4389 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:41,385 INFO L93 Difference]: Finished difference Result 2698 states and 4810 transitions. [2022-01-10 07:37:41,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:37:41,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:41,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:41,393 INFO L225 Difference]: With dead ends: 2698 [2022-01-10 07:37:41,393 INFO L226 Difference]: Without dead ends: 2415 [2022-01-10 07:37:41,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 07:37:41,396 INFO L933 BasicCegarLoop]: 4158 mSDtfsCounter, 4230 mSDsluCounter, 8145 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4241 SdHoareTripleChecker+Valid, 12303 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:41,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4241 Valid, 12303 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:37:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2022-01-10 07:37:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2415. [2022-01-10 07:37:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.823281315900464) internal successors, (4323), 2374 states have internal predecessors, (4323), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2022-01-10 07:37:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4382 transitions. [2022-01-10 07:37:41,442 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4382 transitions. Word has length 79 [2022-01-10 07:37:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:41,442 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 4382 transitions. [2022-01-10 07:37:41,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4382 transitions. [2022-01-10 07:37:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:41,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:41,443 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] [2022-01-10 07:37:41,452 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 07:37:41,653 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 07:37:41,653 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:41,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash 167902984, now seen corresponding path program 1 times [2022-01-10 07:37:41,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:41,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991571798] [2022-01-10 07:37:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:41,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:41,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:41,656 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 07:37:41,658 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 07:37:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:41,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:41,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:41,872 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 07:37:41,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:41,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:41,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991571798] [2022-01-10 07:37:41,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991571798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:41,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:41,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:41,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17691484] [2022-01-10 07:37:41,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:41,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:41,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:41,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:41,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:41,874 INFO L87 Difference]: Start difference. First operand 2415 states and 4382 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:42,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:42,048 INFO L93 Difference]: Finished difference Result 2698 states and 4796 transitions. [2022-01-10 07:37:42,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:37:42,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:42,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:42,056 INFO L225 Difference]: With dead ends: 2698 [2022-01-10 07:37:42,056 INFO L226 Difference]: Without dead ends: 2415 [2022-01-10 07:37:42,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 07:37:42,058 INFO L933 BasicCegarLoop]: 4155 mSDtfsCounter, 4224 mSDsluCounter, 8141 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 12296 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:42,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4235 Valid, 12296 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:37:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2022-01-10 07:37:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2415. [2022-01-10 07:37:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8203289751159848) internal successors, (4316), 2374 states have internal predecessors, (4316), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2022-01-10 07:37:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4375 transitions. [2022-01-10 07:37:42,109 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4375 transitions. Word has length 79 [2022-01-10 07:37:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:42,109 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 4375 transitions. [2022-01-10 07:37:42,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:42,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4375 transitions. [2022-01-10 07:37:42,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:42,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:42,111 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] [2022-01-10 07:37:42,133 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 07:37:42,336 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 07:37:42,336 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:42,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:42,337 INFO L85 PathProgramCache]: Analyzing trace with hash 713161732, now seen corresponding path program 1 times [2022-01-10 07:37:42,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:42,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005266510] [2022-01-10 07:37:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:42,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:42,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:42,360 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 07:37:42,392 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 07:37:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:42,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:42,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:42,583 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 07:37:42,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:42,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:42,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005266510] [2022-01-10 07:37:42,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005266510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:42,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:42,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:42,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818096448] [2022-01-10 07:37:42,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:42,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:42,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:42,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:42,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:42,588 INFO L87 Difference]: Start difference. First operand 2415 states and 4375 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:42,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:42,819 INFO L93 Difference]: Finished difference Result 2764 states and 4882 transitions. [2022-01-10 07:37:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:37:42,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:42,827 INFO L225 Difference]: With dead ends: 2764 [2022-01-10 07:37:42,827 INFO L226 Difference]: Without dead ends: 2481 [2022-01-10 07:37:42,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 07:37:42,829 INFO L933 BasicCegarLoop]: 4152 mSDtfsCounter, 4254 mSDsluCounter, 8136 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4265 SdHoareTripleChecker+Valid, 12288 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:42,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4265 Valid, 12288 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:37:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2022-01-10 07:37:42,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2481. [2022-01-10 07:37:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2481 states, 2431 states have (on average 1.8062525709584534) internal successors, (4391), 2434 states have internal predecessors, (4391), 31 states have call successors, (31), 16 states have call predecessors, (31), 17 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:37:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 4454 transitions. [2022-01-10 07:37:42,872 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 4454 transitions. Word has length 79 [2022-01-10 07:37:42,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:42,872 INFO L470 AbstractCegarLoop]: Abstraction has 2481 states and 4454 transitions. [2022-01-10 07:37:42,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:42,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 4454 transitions. [2022-01-10 07:37:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:42,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:42,873 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] [2022-01-10 07:37:42,893 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 07:37:43,080 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 07:37:43,080 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash 595519561, now seen corresponding path program 1 times [2022-01-10 07:37:43,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:43,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792006621] [2022-01-10 07:37:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:43,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:43,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:43,082 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 07:37:43,083 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 07:37:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:43,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:43,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:43,235 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 07:37:43,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:43,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:43,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792006621] [2022-01-10 07:37:43,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792006621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:43,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:43,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:43,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277292225] [2022-01-10 07:37:43,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:43,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:43,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:43,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:43,237 INFO L87 Difference]: Start difference. First operand 2481 states and 4454 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:43,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:43,451 INFO L93 Difference]: Finished difference Result 2896 states and 5040 transitions. [2022-01-10 07:37:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:37:43,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:43,459 INFO L225 Difference]: With dead ends: 2896 [2022-01-10 07:37:43,459 INFO L226 Difference]: Without dead ends: 2547 [2022-01-10 07:37:43,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 07:37:43,461 INFO L933 BasicCegarLoop]: 4150 mSDtfsCounter, 4247 mSDsluCounter, 8132 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4258 SdHoareTripleChecker+Valid, 12282 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:43,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4258 Valid, 12282 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:37:43,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2022-01-10 07:37:43,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2547. [2022-01-10 07:37:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 2491 states have (on average 1.7912484945804898) internal successors, (4462), 2494 states have internal predecessors, (4462), 33 states have call successors, (33), 20 states have call predecessors, (33), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:37:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 4529 transitions. [2022-01-10 07:37:43,506 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 4529 transitions. Word has length 79 [2022-01-10 07:37:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:43,506 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 4529 transitions. [2022-01-10 07:37:43,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 4529 transitions. [2022-01-10 07:37:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:43,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:43,508 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] [2022-01-10 07:37:43,525 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 07:37:43,715 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 07:37:43,715 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:43,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1016198213, now seen corresponding path program 1 times [2022-01-10 07:37:43,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:43,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832120879] [2022-01-10 07:37:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:43,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:43,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:43,724 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 07:37:43,731 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 07:37:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:43,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:43,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:43,873 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 07:37:43,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:43,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:43,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832120879] [2022-01-10 07:37:43,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832120879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:43,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:43,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:43,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117401884] [2022-01-10 07:37:43,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:43,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:43,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:43,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:43,875 INFO L87 Difference]: Start difference. First operand 2547 states and 4529 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:44,094 INFO L93 Difference]: Finished difference Result 3028 states and 5190 transitions. [2022-01-10 07:37:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:37:44,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:44,103 INFO L225 Difference]: With dead ends: 3028 [2022-01-10 07:37:44,103 INFO L226 Difference]: Without dead ends: 2613 [2022-01-10 07:37:44,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 07:37:44,106 INFO L933 BasicCegarLoop]: 4145 mSDtfsCounter, 4240 mSDsluCounter, 8128 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 12273 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:44,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4251 Valid, 12273 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:37:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2022-01-10 07:37:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 2613. [2022-01-10 07:37:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2551 states have (on average 1.7753822030576245) internal successors, (4529), 2554 states have internal predecessors, (4529), 35 states have call successors, (35), 24 states have call predecessors, (35), 25 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 07:37:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 4600 transitions. [2022-01-10 07:37:44,173 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 4600 transitions. Word has length 79 [2022-01-10 07:37:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:44,173 INFO L470 AbstractCegarLoop]: Abstraction has 2613 states and 4600 transitions. [2022-01-10 07:37:44,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 07:37:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 4600 transitions. [2022-01-10 07:37:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:44,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:44,174 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] [2022-01-10 07:37:44,181 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 07:37:44,381 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 07:37:44,381 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1683727938, now seen corresponding path program 1 times [2022-01-10 07:37:44,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:44,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434488858] [2022-01-10 07:37:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:44,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:44,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:44,396 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 07:37:44,397 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 07:37:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:44,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:44,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:44,563 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 07:37:44,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:44,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:44,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434488858] [2022-01-10 07:37:44,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434488858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:44,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:44,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:37:44,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412092464] [2022-01-10 07:37:44,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:44,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:44,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:44,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:44,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:44,566 INFO L87 Difference]: Start difference. First operand 2613 states and 4600 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 07:37:44,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:44,633 INFO L93 Difference]: Finished difference Result 3191 states and 5371 transitions. [2022-01-10 07:37:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:37:44,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:44,641 INFO L225 Difference]: With dead ends: 3191 [2022-01-10 07:37:44,641 INFO L226 Difference]: Without dead ends: 2711 [2022-01-10 07:37:44,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 07:37:44,644 INFO L933 BasicCegarLoop]: 4163 mSDtfsCounter, 128 mSDsluCounter, 12538 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 16701 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 07:37:44,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 16701 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-01-10 07:37:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2619. [2022-01-10 07:37:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2557 states have (on average 1.7712162690653108) internal successors, (4529), 2560 states have internal predecessors, (4529), 35 states have call successors, (35), 24 states have call predecessors, (35), 25 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 07:37:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4600 transitions. [2022-01-10 07:37:44,696 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4600 transitions. Word has length 79 [2022-01-10 07:37:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:44,697 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4600 transitions. [2022-01-10 07:37:44,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 07:37:44,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4600 transitions. [2022-01-10 07:37:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:44,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:44,698 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] [2022-01-10 07:37:44,717 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 07:37:44,905 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 07:37:44,906 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:44,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:44,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1668209220, now seen corresponding path program 1 times [2022-01-10 07:37:44,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:44,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017320197] [2022-01-10 07:37:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:44,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:44,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:44,908 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 07:37:44,909 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 07:37:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:44,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:44,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:45,091 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 07:37:45,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:45,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:45,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017320197] [2022-01-10 07:37:45,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017320197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:45,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:45,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:37:45,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23523764] [2022-01-10 07:37:45,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:45,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:45,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:45,093 INFO L87 Difference]: Start difference. First operand 2619 states and 4600 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 07:37:45,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:45,172 INFO L93 Difference]: Finished difference Result 3175 states and 5335 transitions. [2022-01-10 07:37:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:37:45,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:45,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:45,192 INFO L225 Difference]: With dead ends: 3175 [2022-01-10 07:37:45,193 INFO L226 Difference]: Without dead ends: 2689 [2022-01-10 07:37:45,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 07:37:45,197 INFO L933 BasicCegarLoop]: 4163 mSDtfsCounter, 89 mSDsluCounter, 12523 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 16686 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 07:37:45,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 16686 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2022-01-10 07:37:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2625. [2022-01-10 07:37:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2625 states, 2563 states have (on average 1.7670698400312135) internal successors, (4529), 2566 states have internal predecessors, (4529), 35 states have call successors, (35), 24 states have call predecessors, (35), 25 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 07:37:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2625 states to 2625 states and 4600 transitions. [2022-01-10 07:37:45,257 INFO L78 Accepts]: Start accepts. Automaton has 2625 states and 4600 transitions. Word has length 79 [2022-01-10 07:37:45,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:45,258 INFO L470 AbstractCegarLoop]: Abstraction has 2625 states and 4600 transitions. [2022-01-10 07:37:45,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 07:37:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2625 states and 4600 transitions. [2022-01-10 07:37:45,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:45,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:45,259 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] [2022-01-10 07:37:45,281 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 07:37:45,466 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 07:37:45,466 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:45,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash 770815942, now seen corresponding path program 1 times [2022-01-10 07:37:45,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:45,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483937554] [2022-01-10 07:37:45,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:45,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:45,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:45,468 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 07:37:45,500 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 07:37:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:45,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:37:45,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:45,661 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 07:37:45,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:45,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:45,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483937554] [2022-01-10 07:37:45,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483937554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:45,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:45,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:37:45,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47595346] [2022-01-10 07:37:45,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:45,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:37:45,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:45,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:37:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:37:45,663 INFO L87 Difference]: Start difference. First operand 2625 states and 4600 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 07:37:45,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:45,731 INFO L93 Difference]: Finished difference Result 3526 states and 5754 transitions. [2022-01-10 07:37:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:37:45,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:45,737 INFO L225 Difference]: With dead ends: 3526 [2022-01-10 07:37:45,737 INFO L226 Difference]: Without dead ends: 3034 [2022-01-10 07:37:45,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 07:37:45,740 INFO L933 BasicCegarLoop]: 4209 mSDtfsCounter, 4115 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4115 SdHoareTripleChecker+Valid, 4389 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 07:37:45,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4115 Valid, 4389 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2022-01-10 07:37:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 3028. [2022-01-10 07:37:45,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2918 states have (on average 1.7052775873886223) internal successors, (4976), 2922 states have internal predecessors, (4976), 62 states have call successors, (62), 44 states have call predecessors, (62), 46 states have return successors, (64), 62 states have call predecessors, (64), 62 states have call successors, (64) [2022-01-10 07:37:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 5102 transitions. [2022-01-10 07:37:45,804 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 5102 transitions. Word has length 79 [2022-01-10 07:37:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:45,804 INFO L470 AbstractCegarLoop]: Abstraction has 3028 states and 5102 transitions. [2022-01-10 07:37:45,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 07:37:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 5102 transitions. [2022-01-10 07:37:45,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:45,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:45,805 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] [2022-01-10 07:37:45,825 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 07:37:46,012 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 07:37:46,012 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash 285641223, now seen corresponding path program 1 times [2022-01-10 07:37:46,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:46,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141894241] [2022-01-10 07:37:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:46,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:46,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:46,029 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 07:37:46,051 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 07:37:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:46,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:46,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:46,209 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 07:37:46,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:46,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:46,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141894241] [2022-01-10 07:37:46,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141894241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:46,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:46,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:37:46,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719461360] [2022-01-10 07:37:46,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:46,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:46,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:46,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:46,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:46,212 INFO L87 Difference]: Start difference. First operand 3028 states and 5102 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 07:37:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:46,293 INFO L93 Difference]: Finished difference Result 4091 states and 6480 transitions. [2022-01-10 07:37:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:37:46,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:46,301 INFO L225 Difference]: With dead ends: 4091 [2022-01-10 07:37:46,301 INFO L226 Difference]: Without dead ends: 3196 [2022-01-10 07:37:46,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 07:37:46,305 INFO L933 BasicCegarLoop]: 4169 mSDtfsCounter, 49 mSDsluCounter, 12520 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16689 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 07:37:46,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 16689 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2022-01-10 07:37:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 3052. [2022-01-10 07:37:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 2942 states have (on average 1.6974847042828007) internal successors, (4994), 2946 states have internal predecessors, (4994), 62 states have call successors, (62), 44 states have call predecessors, (62), 46 states have return successors, (64), 62 states have call predecessors, (64), 62 states have call successors, (64) [2022-01-10 07:37:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 5120 transitions. [2022-01-10 07:37:46,470 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 5120 transitions. Word has length 79 [2022-01-10 07:37:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:46,472 INFO L470 AbstractCegarLoop]: Abstraction has 3052 states and 5120 transitions. [2022-01-10 07:37:46,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 07:37:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 5120 transitions. [2022-01-10 07:37:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:46,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:46,473 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] [2022-01-10 07:37:46,496 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 07:37:46,680 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 07:37:46,681 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:46,681 INFO L85 PathProgramCache]: Analyzing trace with hash 945172745, now seen corresponding path program 1 times [2022-01-10 07:37:46,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:46,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858402833] [2022-01-10 07:37:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:46,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:46,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:46,683 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 07:37:46,684 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 07:37:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:46,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:46,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:46,839 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 07:37:46,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:46,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:46,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858402833] [2022-01-10 07:37:46,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858402833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:46,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:46,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:37:46,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633621210] [2022-01-10 07:37:46,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:46,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:37:46,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:46,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:37:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:37:46,841 INFO L87 Difference]: Start difference. First operand 3052 states and 5120 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 07:37:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:46,910 INFO L93 Difference]: Finished difference Result 3985 states and 6314 transitions. [2022-01-10 07:37:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:37:46,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:46,915 INFO L225 Difference]: With dead ends: 3985 [2022-01-10 07:37:46,915 INFO L226 Difference]: Without dead ends: 3066 [2022-01-10 07:37:46,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 07:37:46,917 INFO L933 BasicCegarLoop]: 4163 mSDtfsCounter, 10 mSDsluCounter, 12488 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16651 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 07:37:46,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 16651 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:46,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2022-01-10 07:37:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 3058. [2022-01-10 07:37:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 2948 states have (on average 1.6919945725915875) internal successors, (4988), 2952 states have internal predecessors, (4988), 62 states have call successors, (62), 44 states have call predecessors, (62), 46 states have return successors, (64), 62 states have call predecessors, (64), 62 states have call successors, (64) [2022-01-10 07:37:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 5114 transitions. [2022-01-10 07:37:46,967 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 5114 transitions. Word has length 79 [2022-01-10 07:37:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:46,967 INFO L470 AbstractCegarLoop]: Abstraction has 3058 states and 5114 transitions. [2022-01-10 07:37:46,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 07:37:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 5114 transitions. [2022-01-10 07:37:46,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:37:46,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:46,968 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] [2022-01-10 07:37:46,974 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 07:37:47,174 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 07:37:47,175 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:47,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:47,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1646772619, now seen corresponding path program 1 times [2022-01-10 07:37:47,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:47,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735728208] [2022-01-10 07:37:47,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:47,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:47,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:47,188 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 07:37:47,217 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 07:37:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:47,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:37:47,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:47,403 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 07:37:47,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:47,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:47,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735728208] [2022-01-10 07:37:47,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735728208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:47,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:47,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:37:47,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327249089] [2022-01-10 07:37:47,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:47,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:37:47,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:47,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:37:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:37:47,405 INFO L87 Difference]: Start difference. First operand 3058 states and 5114 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 07:37:47,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:47,480 INFO L93 Difference]: Finished difference Result 4867 states and 7366 transitions. [2022-01-10 07:37:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:37:47,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 79 [2022-01-10 07:37:47,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:47,487 INFO L225 Difference]: With dead ends: 4867 [2022-01-10 07:37:47,488 INFO L226 Difference]: Without dead ends: 3942 [2022-01-10 07:37:47,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 07:37:47,491 INFO L933 BasicCegarLoop]: 4177 mSDtfsCounter, 4079 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4079 SdHoareTripleChecker+Valid, 4357 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 07:37:47,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4079 Valid, 4357 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2022-01-10 07:37:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 3938. [2022-01-10 07:37:47,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3724 states have (on average 1.5918367346938775) internal successors, (5928), 3734 states have internal predecessors, (5928), 120 states have call successors, (120), 88 states have call predecessors, (120), 92 states have return successors, (124), 116 states have call predecessors, (124), 120 states have call successors, (124) [2022-01-10 07:37:47,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 6172 transitions. [2022-01-10 07:37:47,573 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 6172 transitions. Word has length 79 [2022-01-10 07:37:47,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:47,573 INFO L470 AbstractCegarLoop]: Abstraction has 3938 states and 6172 transitions. [2022-01-10 07:37:47,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 07:37:47,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 6172 transitions. [2022-01-10 07:37:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 07:37:47,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:47,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:47,597 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 07:37:47,782 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 07:37:47,782 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:47,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash 229433127, now seen corresponding path program 1 times [2022-01-10 07:37:47,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:47,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679365708] [2022-01-10 07:37:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:47,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:47,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:47,784 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 07:37:47,785 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 07:37:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:47,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:37:47,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:48,047 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:37:48,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:48,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:48,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679365708] [2022-01-10 07:37:48,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679365708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:48,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:48,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:48,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646523492] [2022-01-10 07:37:48,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:48,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:37:48,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:48,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:37:48,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:37:48,049 INFO L87 Difference]: Start difference. First operand 3938 states and 6172 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 07:37:48,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:48,291 INFO L93 Difference]: Finished difference Result 7592 states and 10629 transitions. [2022-01-10 07:37:48,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:37:48,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 128 [2022-01-10 07:37:48,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:48,303 INFO L225 Difference]: With dead ends: 7592 [2022-01-10 07:37:48,303 INFO L226 Difference]: Without dead ends: 5788 [2022-01-10 07:37:48,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 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 07:37:48,309 INFO L933 BasicCegarLoop]: 4213 mSDtfsCounter, 4192 mSDsluCounter, 4243 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4198 SdHoareTripleChecker+Valid, 8456 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:48,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4198 Valid, 8456 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:37:48,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2022-01-10 07:37:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5786. [2022-01-10 07:37:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5786 states, 5369 states have (on average 1.4715962004097598) internal successors, (7901), 5396 states have internal predecessors, (7901), 223 states have call successors, (223), 168 states have call predecessors, (223), 192 states have return successors, (271), 223 states have call predecessors, (271), 223 states have call successors, (271) [2022-01-10 07:37:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5786 states to 5786 states and 8395 transitions. [2022-01-10 07:37:48,447 INFO L78 Accepts]: Start accepts. Automaton has 5786 states and 8395 transitions. Word has length 128 [2022-01-10 07:37:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:48,447 INFO L470 AbstractCegarLoop]: Abstraction has 5786 states and 8395 transitions. [2022-01-10 07:37:48,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 07:37:48,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5786 states and 8395 transitions. [2022-01-10 07:37:48,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 07:37:48,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:48,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:48,459 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 07:37:48,659 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 07:37:48,659 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:48,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:48,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1052739159, now seen corresponding path program 1 times [2022-01-10 07:37:48,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:48,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065868044] [2022-01-10 07:37:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:48,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:48,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:48,662 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 07:37:48,663 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 07:37:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:48,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:37:48,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:37:48,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:48,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:48,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065868044] [2022-01-10 07:37:48,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065868044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:48,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:48,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:37:48,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801819618] [2022-01-10 07:37:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:48,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:37:48,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:48,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:37:48,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:37:48,877 INFO L87 Difference]: Start difference. First operand 5786 states and 8395 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 07:37:48,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:48,993 INFO L93 Difference]: Finished difference Result 9432 states and 12800 transitions. [2022-01-10 07:37:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:37:48,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 128 [2022-01-10 07:37:48,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:49,006 INFO L225 Difference]: With dead ends: 9432 [2022-01-10 07:37:49,006 INFO L226 Difference]: Without dead ends: 5780 [2022-01-10 07:37:49,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 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 07:37:49,013 INFO L933 BasicCegarLoop]: 4164 mSDtfsCounter, 199 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 8122 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 07:37:49,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 8122 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2022-01-10 07:37:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5780. [2022-01-10 07:37:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5780 states, 5366 states have (on average 1.4713007827059261) internal successors, (7895), 5392 states have internal predecessors, (7895), 220 states have call successors, (220), 168 states have call predecessors, (220), 192 states have return successors, (268), 220 states have call predecessors, (268), 220 states have call successors, (268) [2022-01-10 07:37:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5780 states to 5780 states and 8383 transitions. [2022-01-10 07:37:49,154 INFO L78 Accepts]: Start accepts. Automaton has 5780 states and 8383 transitions. Word has length 128 [2022-01-10 07:37:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:49,155 INFO L470 AbstractCegarLoop]: Abstraction has 5780 states and 8383 transitions. [2022-01-10 07:37:49,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 07:37:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5780 states and 8383 transitions. [2022-01-10 07:37:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 07:37:49,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:49,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:49,175 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 07:37:49,365 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 07:37:49,365 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:49,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:49,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1685015854, now seen corresponding path program 1 times [2022-01-10 07:37:49,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:49,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455400031] [2022-01-10 07:37:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:49,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:49,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:49,367 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 07:37:49,368 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 07:37:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:49,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:37:49,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:37:49,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:49,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:49,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455400031] [2022-01-10 07:37:49,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455400031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:49,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:49,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:49,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14111370] [2022-01-10 07:37:49,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:49,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:37:49,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:49,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:37:49,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:37:49,640 INFO L87 Difference]: Start difference. First operand 5780 states and 8383 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 07:37:50,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:50,015 INFO L93 Difference]: Finished difference Result 13109 states and 17242 transitions. [2022-01-10 07:37:50,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:37:50,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 129 [2022-01-10 07:37:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:50,041 INFO L225 Difference]: With dead ends: 13109 [2022-01-10 07:37:50,042 INFO L226 Difference]: Without dead ends: 9463 [2022-01-10 07:37:50,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 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 07:37:50,054 INFO L933 BasicCegarLoop]: 4205 mSDtfsCounter, 4191 mSDsluCounter, 4221 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 8426 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:50,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4197 Valid, 8426 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:37:50,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9463 states. [2022-01-10 07:37:50,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9463 to 9325. [2022-01-10 07:37:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9325 states, 8480 states have (on average 1.3681603773584905) internal successors, (11602), 8559 states have internal predecessors, (11602), 423 states have call successors, (423), 320 states have call predecessors, (423), 420 states have return successors, (603), 447 states have call predecessors, (603), 423 states have call successors, (603) [2022-01-10 07:37:50,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9325 states to 9325 states and 12628 transitions. [2022-01-10 07:37:50,563 INFO L78 Accepts]: Start accepts. Automaton has 9325 states and 12628 transitions. Word has length 129 [2022-01-10 07:37:50,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:50,564 INFO L470 AbstractCegarLoop]: Abstraction has 9325 states and 12628 transitions. [2022-01-10 07:37:50,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 07:37:50,564 INFO L276 IsEmpty]: Start isEmpty. Operand 9325 states and 12628 transitions. [2022-01-10 07:37:50,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 07:37:50,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:50,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:50,576 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 07:37:50,776 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 07:37:50,776 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash 402843568, now seen corresponding path program 1 times [2022-01-10 07:37:50,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:50,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429409653] [2022-01-10 07:37:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:50,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:50,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:50,778 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 07:37:50,780 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 07:37:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:50,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:37:50,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:37:51,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:51,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:51,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429409653] [2022-01-10 07:37:51,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429409653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:51,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:51,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:37:51,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700558653] [2022-01-10 07:37:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:51,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:37:51,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:51,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:37:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:37:51,011 INFO L87 Difference]: Start difference. First operand 9325 states and 12628 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 07:37:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:51,197 INFO L93 Difference]: Finished difference Result 14943 states and 19397 transitions. [2022-01-10 07:37:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:37:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 129 [2022-01-10 07:37:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:51,213 INFO L225 Difference]: With dead ends: 14943 [2022-01-10 07:37:51,213 INFO L226 Difference]: Without dead ends: 7752 [2022-01-10 07:37:51,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 07:37:51,227 INFO L933 BasicCegarLoop]: 4163 mSDtfsCounter, 197 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8121 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 07:37:51,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 8121 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7752 states. [2022-01-10 07:37:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7752 to 7752. [2022-01-10 07:37:51,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7752 states, 7098 states have (on average 1.4034939419554804) internal successors, (9962), 7164 states have internal predecessors, (9962), 320 states have call successors, (320), 244 states have call predecessors, (320), 332 states have return successors, (464), 344 states have call predecessors, (464), 320 states have call successors, (464) [2022-01-10 07:37:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7752 states to 7752 states and 10746 transitions. [2022-01-10 07:37:51,524 INFO L78 Accepts]: Start accepts. Automaton has 7752 states and 10746 transitions. Word has length 129 [2022-01-10 07:37:51,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:51,524 INFO L470 AbstractCegarLoop]: Abstraction has 7752 states and 10746 transitions. [2022-01-10 07:37:51,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 07:37:51,524 INFO L276 IsEmpty]: Start isEmpty. Operand 7752 states and 10746 transitions. [2022-01-10 07:37:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 07:37:51,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:51,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:51,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:37:51,737 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 07:37:51,738 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:51,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:51,738 INFO L85 PathProgramCache]: Analyzing trace with hash -616253565, now seen corresponding path program 1 times [2022-01-10 07:37:51,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:51,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587935115] [2022-01-10 07:37:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:51,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:51,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:51,740 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 07:37:51,741 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 07:37:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:51,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:37:51,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:37:52,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:52,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:52,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587935115] [2022-01-10 07:37:52,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587935115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:52,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:52,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:52,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756481065] [2022-01-10 07:37:52,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:52,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:37:52,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:52,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:37:52,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:37:52,033 INFO L87 Difference]: Start difference. First operand 7752 states and 10746 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 07:37:52,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:52,437 INFO L93 Difference]: Finished difference Result 17864 states and 22975 transitions. [2022-01-10 07:37:52,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:37:52,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 130 [2022-01-10 07:37:52,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:52,465 INFO L225 Difference]: With dead ends: 17864 [2022-01-10 07:37:52,465 INFO L226 Difference]: Without dead ends: 12246 [2022-01-10 07:37:52,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 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 07:37:52,478 INFO L933 BasicCegarLoop]: 4218 mSDtfsCounter, 4172 mSDsluCounter, 4222 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4178 SdHoareTripleChecker+Valid, 8440 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:52,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4178 Valid, 8440 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:37:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12246 states. [2022-01-10 07:37:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12246 to 12244. [2022-01-10 07:37:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12244 states, 11035 states have (on average 1.330584503851382) internal successors, (14683), 11166 states have internal predecessors, (14683), 591 states have call successors, (591), 440 states have call predecessors, (591), 616 states have return successors, (891), 639 states have call predecessors, (891), 591 states have call successors, (891) [2022-01-10 07:37:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12244 states to 12244 states and 16165 transitions. [2022-01-10 07:37:52,964 INFO L78 Accepts]: Start accepts. Automaton has 12244 states and 16165 transitions. Word has length 130 [2022-01-10 07:37:52,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:52,965 INFO L470 AbstractCegarLoop]: Abstraction has 12244 states and 16165 transitions. [2022-01-10 07:37:52,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 07:37:52,965 INFO L276 IsEmpty]: Start isEmpty. Operand 12244 states and 16165 transitions. [2022-01-10 07:37:52,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 07:37:52,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:52,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:52,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-01-10 07:37:53,180 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 07:37:53,180 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:53,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:53,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1898425851, now seen corresponding path program 1 times [2022-01-10 07:37:53,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:53,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809702957] [2022-01-10 07:37:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:53,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:53,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:53,196 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 07:37:53,214 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 07:37:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:53,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:37:53,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 07:37:53,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:53,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:53,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809702957] [2022-01-10 07:37:53,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809702957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:53,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:53,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:37:53,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027575469] [2022-01-10 07:37:53,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:53,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:37:53,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:53,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:37:53,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:37:53,402 INFO L87 Difference]: Start difference. First operand 12244 states and 16165 transitions. 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, (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 07:37:53,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:53,717 INFO L93 Difference]: Finished difference Result 22350 states and 28346 transitions. [2022-01-10 07:37:53,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:37:53,717 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, (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 130 [2022-01-10 07:37:53,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:53,743 INFO L225 Difference]: With dead ends: 22350 [2022-01-10 07:37:53,744 INFO L226 Difference]: Without dead ends: 12240 [2022-01-10 07:37:53,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 07:37:53,762 INFO L933 BasicCegarLoop]: 4162 mSDtfsCounter, 195 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 8120 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 07:37:53,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 8120 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12240 states. [2022-01-10 07:37:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12240 to 12240. [2022-01-10 07:37:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12240 states, 11034 states have (on average 1.3305238354177995) internal successors, (14681), 11164 states have internal predecessors, (14681), 588 states have call successors, (588), 440 states have call predecessors, (588), 616 states have return successors, (888), 636 states have call predecessors, (888), 588 states have call successors, (888) [2022-01-10 07:37:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12240 states to 12240 states and 16157 transitions. [2022-01-10 07:37:54,278 INFO L78 Accepts]: Start accepts. Automaton has 12240 states and 16157 transitions. Word has length 130 [2022-01-10 07:37:54,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:54,278 INFO L470 AbstractCegarLoop]: Abstraction has 12240 states and 16157 transitions. [2022-01-10 07:37:54,278 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, (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 07:37:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 12240 states and 16157 transitions. [2022-01-10 07:37:54,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 07:37:54,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:54,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:54,293 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 07:37:54,491 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 07:37:54,491 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:54,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:54,492 INFO L85 PathProgramCache]: Analyzing trace with hash -55336750, now seen corresponding path program 1 times [2022-01-10 07:37:54,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:54,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619043086] [2022-01-10 07:37:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:54,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:54,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:54,504 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 07:37:54,534 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 07:37:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:54,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:37:54,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:37:54,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:54,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:54,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619043086] [2022-01-10 07:37:54,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619043086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:54,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:54,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:37:54,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877475051] [2022-01-10 07:37:54,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:54,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:37:54,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:54,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:37:54,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:37:54,733 INFO L87 Difference]: Start difference. First operand 12240 states and 16157 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 07:37:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:55,365 INFO L93 Difference]: Finished difference Result 29601 states and 37320 transitions. [2022-01-10 07:37:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:37:55,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 131 [2022-01-10 07:37:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:55,402 INFO L225 Difference]: With dead ends: 29601 [2022-01-10 07:37:55,402 INFO L226 Difference]: Without dead ends: 15904 [2022-01-10 07:37:55,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 07:37:55,429 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 163 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 8487 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 07:37:55,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 8487 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15904 states. [2022-01-10 07:37:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15904 to 15904. [2022-01-10 07:37:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15904 states, 14242 states have (on average 1.2999578710855217) internal successors, (18514), 14400 states have internal predecessors, (18514), 832 states have call successors, (832), 612 states have call predecessors, (832), 828 states have return successors, (1266), 892 states have call predecessors, (1266), 832 states have call successors, (1266) [2022-01-10 07:37:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15904 states to 15904 states and 20612 transitions. [2022-01-10 07:37:56,032 INFO L78 Accepts]: Start accepts. Automaton has 15904 states and 20612 transitions. Word has length 131 [2022-01-10 07:37:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:56,032 INFO L470 AbstractCegarLoop]: Abstraction has 15904 states and 20612 transitions. [2022-01-10 07:37:56,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 07:37:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand 15904 states and 20612 transitions. [2022-01-10 07:37:56,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:37:56,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:56,041 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:37:56,048 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 07:37:56,243 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 07:37:56,243 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2026887911, now seen corresponding path program 1 times [2022-01-10 07:37:56,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:56,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117124508] [2022-01-10 07:37:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:56,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:56,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:56,260 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 07:37:56,268 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 07:37:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:56,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:37:56,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:37:56,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:56,571 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:56,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117124508] [2022-01-10 07:37:56,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117124508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:56,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:56,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:37:56,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100819717] [2022-01-10 07:37:56,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:56,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:37:56,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:56,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:37:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:37:56,572 INFO L87 Difference]: Start difference. First operand 15904 states and 20612 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 07:37:57,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:57,076 INFO L93 Difference]: Finished difference Result 33443 states and 41928 transitions. [2022-01-10 07:37:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:37:57,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 168 [2022-01-10 07:37:57,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:57,122 INFO L225 Difference]: With dead ends: 33443 [2022-01-10 07:37:57,122 INFO L226 Difference]: Without dead ends: 19672 [2022-01-10 07:37:57,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:37:57,146 INFO L933 BasicCegarLoop]: 4172 mSDtfsCounter, 4048 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4048 SdHoareTripleChecker+Valid, 4352 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 07:37:57,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4048 Valid, 4352 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:37:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19672 states. [2022-01-10 07:37:57,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19672 to 19600. [2022-01-10 07:37:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19600 states, 17474 states have (on average 1.275838388462859) internal successors, (22294), 17664 states have internal predecessors, (22294), 1076 states have call successors, (1076), 784 states have call predecessors, (1076), 1048 states have return successors, (1614), 1152 states have call predecessors, (1614), 1076 states have call successors, (1614) [2022-01-10 07:37:57,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19600 states to 19600 states and 24984 transitions. [2022-01-10 07:37:57,898 INFO L78 Accepts]: Start accepts. Automaton has 19600 states and 24984 transitions. Word has length 168 [2022-01-10 07:37:57,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:57,898 INFO L470 AbstractCegarLoop]: Abstraction has 19600 states and 24984 transitions. [2022-01-10 07:37:57,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 07:37:57,898 INFO L276 IsEmpty]: Start isEmpty. Operand 19600 states and 24984 transitions. [2022-01-10 07:37:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-10 07:37:57,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:57,911 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, 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] [2022-01-10 07:37:57,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:37:58,118 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 07:37:58,118 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:37:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:37:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash 516462405, now seen corresponding path program 1 times [2022-01-10 07:37:58,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:37:58,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419600490] [2022-01-10 07:37:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:37:58,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:37:58,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:37:58,120 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 07:37:58,122 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 07:37:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:37:58,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:37:58,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:37:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:37:58,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:37:58,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:37:58,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419600490] [2022-01-10 07:37:58,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419600490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:37:58,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:37:58,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:37:58,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77149511] [2022-01-10 07:37:58,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:37:58,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:37:58,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:37:58,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:37:58,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:37:58,466 INFO L87 Difference]: Start difference. First operand 19600 states and 24984 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 07:37:59,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:37:59,152 INFO L93 Difference]: Finished difference Result 37330 states and 46413 transitions. [2022-01-10 07:37:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:37:59,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 188 [2022-01-10 07:37:59,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:37:59,192 INFO L225 Difference]: With dead ends: 37330 [2022-01-10 07:37:59,192 INFO L226 Difference]: Without dead ends: 19864 [2022-01-10 07:37:59,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 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 07:37:59,220 INFO L933 BasicCegarLoop]: 4168 mSDtfsCounter, 4194 mSDsluCounter, 4207 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 8375 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:37:59,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4200 Valid, 8375 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:37:59,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19864 states. [2022-01-10 07:37:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19864 to 19864. [2022-01-10 07:37:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19864 states, 17706 states have (on average 1.2658985654580368) internal successors, (22414), 17912 states have internal predecessors, (22414), 1076 states have call successors, (1076), 784 states have call predecessors, (1076), 1080 states have return successors, (1482), 1168 states have call predecessors, (1482), 1076 states have call successors, (1482) [2022-01-10 07:37:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19864 states to 19864 states and 24972 transitions. [2022-01-10 07:37:59,952 INFO L78 Accepts]: Start accepts. Automaton has 19864 states and 24972 transitions. Word has length 188 [2022-01-10 07:37:59,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:37:59,952 INFO L470 AbstractCegarLoop]: Abstraction has 19864 states and 24972 transitions. [2022-01-10 07:37:59,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 07:37:59,952 INFO L276 IsEmpty]: Start isEmpty. Operand 19864 states and 24972 transitions. [2022-01-10 07:37:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 07:37:59,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:37:59,965 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, 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 07:37:59,976 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 07:38:00,172 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 07:38:00,172 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:00,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:00,173 INFO L85 PathProgramCache]: Analyzing trace with hash 850682064, now seen corresponding path program 1 times [2022-01-10 07:38:00,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:00,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412720303] [2022-01-10 07:38:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:00,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:00,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:00,174 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 07:38:00,176 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 07:38:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:00,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:00,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:38:00,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:00,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:00,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412720303] [2022-01-10 07:38:00,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412720303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:00,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:00,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:00,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452374475] [2022-01-10 07:38:00,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:00,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:00,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:00,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:00,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:00,511 INFO L87 Difference]: Start difference. First operand 19864 states and 24972 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2022-01-10 07:38:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:01,002 INFO L93 Difference]: Finished difference Result 31060 states and 38344 transitions. [2022-01-10 07:38:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:01,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) Word has length 189 [2022-01-10 07:38:01,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:01,041 INFO L225 Difference]: With dead ends: 31060 [2022-01-10 07:38:01,042 INFO L226 Difference]: Without dead ends: 17006 [2022-01-10 07:38:01,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 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 07:38:01,064 INFO L933 BasicCegarLoop]: 4319 mSDtfsCounter, 154 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8473 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:01,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 8473 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:01,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17006 states. [2022-01-10 07:38:01,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17006 to 17004. [2022-01-10 07:38:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17004 states, 15194 states have (on average 1.280242200868764) internal successors, (19452), 15374 states have internal predecessors, (19452), 892 states have call successors, (892), 648 states have call predecessors, (892), 916 states have return successors, (1258), 982 states have call predecessors, (1258), 892 states have call successors, (1258) [2022-01-10 07:38:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17004 states to 17004 states and 21602 transitions. [2022-01-10 07:38:01,769 INFO L78 Accepts]: Start accepts. Automaton has 17004 states and 21602 transitions. Word has length 189 [2022-01-10 07:38:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:01,769 INFO L470 AbstractCegarLoop]: Abstraction has 17004 states and 21602 transitions. [2022-01-10 07:38:01,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2022-01-10 07:38:01,769 INFO L276 IsEmpty]: Start isEmpty. Operand 17004 states and 21602 transitions. [2022-01-10 07:38:01,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-10 07:38:01,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:01,783 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2022-01-10 07:38:01,791 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 07:38:01,991 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 07:38:01,991 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1035449538, now seen corresponding path program 1 times [2022-01-10 07:38:01,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:01,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240880818] [2022-01-10 07:38:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:01,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:01,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:01,993 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 07:38:01,994 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 07:38:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:02,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:02,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-01-10 07:38:02,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:02,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:02,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240880818] [2022-01-10 07:38:02,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240880818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:02,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:02,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:02,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024313605] [2022-01-10 07:38:02,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:02,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:02,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:02,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:02,395 INFO L87 Difference]: Start difference. First operand 17004 states and 21602 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 07:38:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:02,885 INFO L93 Difference]: Finished difference Result 29778 states and 36814 transitions. [2022-01-10 07:38:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:02,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 230 [2022-01-10 07:38:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:02,922 INFO L225 Difference]: With dead ends: 29778 [2022-01-10 07:38:02,923 INFO L226 Difference]: Without dead ends: 17006 [2022-01-10 07:38:02,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 228 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 07:38:02,943 INFO L933 BasicCegarLoop]: 4321 mSDtfsCounter, 150 mSDsluCounter, 4156 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 8477 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:02,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 8477 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:02,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17006 states. [2022-01-10 07:38:03,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17006 to 17004. [2022-01-10 07:38:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17004 states, 15194 states have (on average 1.277741213636962) internal successors, (19414), 15374 states have internal predecessors, (19414), 892 states have call successors, (892), 648 states have call predecessors, (892), 916 states have return successors, (1240), 982 states have call predecessors, (1240), 892 states have call successors, (1240) [2022-01-10 07:38:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17004 states to 17004 states and 21546 transitions. [2022-01-10 07:38:03,609 INFO L78 Accepts]: Start accepts. Automaton has 17004 states and 21546 transitions. Word has length 230 [2022-01-10 07:38:03,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:03,609 INFO L470 AbstractCegarLoop]: Abstraction has 17004 states and 21546 transitions. [2022-01-10 07:38:03,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 07:38:03,609 INFO L276 IsEmpty]: Start isEmpty. Operand 17004 states and 21546 transitions. [2022-01-10 07:38:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-10 07:38:03,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:03,620 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:03,628 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 07:38:03,828 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 07:38:03,828 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1415490971, now seen corresponding path program 1 times [2022-01-10 07:38:03,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:03,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183531467] [2022-01-10 07:38:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:03,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:03,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:03,831 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 07:38:03,832 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 07:38:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:03,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:38:03,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-01-10 07:38:04,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:04,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:04,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183531467] [2022-01-10 07:38:04,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183531467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:04,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:04,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:04,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100487415] [2022-01-10 07:38:04,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:04,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:38:04,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:38:04,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:38:04,298 INFO L87 Difference]: Start difference. First operand 17004 states and 21546 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 07:38:04,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:04,911 INFO L93 Difference]: Finished difference Result 31932 states and 39763 transitions. [2022-01-10 07:38:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:04,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 230 [2022-01-10 07:38:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:04,946 INFO L225 Difference]: With dead ends: 31932 [2022-01-10 07:38:04,946 INFO L226 Difference]: Without dead ends: 17060 [2022-01-10 07:38:04,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 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 07:38:04,973 INFO L933 BasicCegarLoop]: 4140 mSDtfsCounter, 4147 mSDsluCounter, 4048 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4155 SdHoareTripleChecker+Valid, 8188 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:04,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4155 Valid, 8188 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:38:04,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17060 states. [2022-01-10 07:38:05,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17060 to 17060. [2022-01-10 07:38:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17060 states, 15318 states have (on average 1.2415458937198067) internal successors, (19018), 15436 states have internal predecessors, (19018), 892 states have call successors, (892), 688 states have call predecessors, (892), 848 states have return successors, (1100), 936 states have call predecessors, (1100), 892 states have call successors, (1100) [2022-01-10 07:38:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17060 states to 17060 states and 21010 transitions. [2022-01-10 07:38:05,708 INFO L78 Accepts]: Start accepts. Automaton has 17060 states and 21010 transitions. Word has length 230 [2022-01-10 07:38:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:05,708 INFO L470 AbstractCegarLoop]: Abstraction has 17060 states and 21010 transitions. [2022-01-10 07:38:05,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 07:38:05,708 INFO L276 IsEmpty]: Start isEmpty. Operand 17060 states and 21010 transitions. [2022-01-10 07:38:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-01-10 07:38:05,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:05,720 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:38:05,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:05,927 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 07:38:05,928 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash 716399131, now seen corresponding path program 1 times [2022-01-10 07:38:05,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:05,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567953647] [2022-01-10 07:38:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:05,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:05,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:05,930 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 07:38:05,931 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 07:38:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:06,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:06,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-01-10 07:38:06,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:06,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:06,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567953647] [2022-01-10 07:38:06,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567953647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:06,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:06,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:38:06,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876569627] [2022-01-10 07:38:06,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:06,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:06,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:06,411 INFO L87 Difference]: Start difference. First operand 17060 states and 21010 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 07:38:07,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:07,057 INFO L93 Difference]: Finished difference Result 34003 states and 40328 transitions. [2022-01-10 07:38:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:07,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 267 [2022-01-10 07:38:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:07,094 INFO L225 Difference]: With dead ends: 34003 [2022-01-10 07:38:07,094 INFO L226 Difference]: Without dead ends: 19076 [2022-01-10 07:38:07,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 265 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 07:38:07,113 INFO L933 BasicCegarLoop]: 4200 mSDtfsCounter, 4011 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4011 SdHoareTripleChecker+Valid, 4377 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 07:38:07,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4011 Valid, 4377 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19076 states. [2022-01-10 07:38:07,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19076 to 18996. [2022-01-10 07:38:07,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18996 states, 17014 states have (on average 1.2259315857529094) internal successors, (20858), 17140 states have internal predecessors, (20858), 1028 states have call successors, (1028), 784 states have call predecessors, (1028), 952 states have return successors, (1244), 1072 states have call predecessors, (1244), 1028 states have call successors, (1244) [2022-01-10 07:38:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18996 states to 18996 states and 23130 transitions. [2022-01-10 07:38:07,949 INFO L78 Accepts]: Start accepts. Automaton has 18996 states and 23130 transitions. Word has length 267 [2022-01-10 07:38:07,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:07,950 INFO L470 AbstractCegarLoop]: Abstraction has 18996 states and 23130 transitions. [2022-01-10 07:38:07,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 07:38:07,950 INFO L276 IsEmpty]: Start isEmpty. Operand 18996 states and 23130 transitions. [2022-01-10 07:38:07,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-01-10 07:38:07,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:07,966 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:38:07,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:08,173 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 07:38:08,173 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:08,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:08,174 INFO L85 PathProgramCache]: Analyzing trace with hash -476584126, now seen corresponding path program 1 times [2022-01-10 07:38:08,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:08,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037539875] [2022-01-10 07:38:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:08,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:08,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:08,189 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 07:38:08,190 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 07:38:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:08,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:08,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-10 07:38:08,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:08,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:08,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037539875] [2022-01-10 07:38:08,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037539875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:08,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:08,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:08,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262519855] [2022-01-10 07:38:08,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:08,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:08,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:08,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:08,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:08,538 INFO L87 Difference]: Start difference. First operand 18996 states and 23130 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 07:38:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:08,786 INFO L93 Difference]: Finished difference Result 23598 states and 28339 transitions. [2022-01-10 07:38:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:08,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 271 [2022-01-10 07:38:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:08,798 INFO L225 Difference]: With dead ends: 23598 [2022-01-10 07:38:08,798 INFO L226 Difference]: Without dead ends: 6112 [2022-01-10 07:38:08,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 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 07:38:08,818 INFO L933 BasicCegarLoop]: 4259 mSDtfsCounter, 144 mSDsluCounter, 4122 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 8381 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:08,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 8381 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2022-01-10 07:38:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 6112. [2022-01-10 07:38:09,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 5618 states have (on average 1.3834104663581346) internal successors, (7772), 5638 states have internal predecessors, (7772), 280 states have call successors, (280), 196 states have call predecessors, (280), 212 states have return successors, (296), 278 states have call predecessors, (296), 280 states have call successors, (296) [2022-01-10 07:38:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 8348 transitions. [2022-01-10 07:38:09,055 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 8348 transitions. Word has length 271 [2022-01-10 07:38:09,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:09,056 INFO L470 AbstractCegarLoop]: Abstraction has 6112 states and 8348 transitions. [2022-01-10 07:38:09,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 07:38:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 8348 transitions. [2022-01-10 07:38:09,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-01-10 07:38:09,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:09,061 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:09,070 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 07:38:09,268 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 07:38:09,268 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:09,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1143881357, now seen corresponding path program 1 times [2022-01-10 07:38:09,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:09,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180506690] [2022-01-10 07:38:09,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:09,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:09,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:09,271 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 07:38:09,273 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 07:38:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:09,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:09,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-01-10 07:38:09,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:09,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:09,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180506690] [2022-01-10 07:38:09,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180506690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:09,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:09,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:09,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572900909] [2022-01-10 07:38:09,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:09,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:09,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:09,682 INFO L87 Difference]: Start difference. First operand 6112 states and 8348 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, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 07:38:09,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:09,815 INFO L93 Difference]: Finished difference Result 8682 states and 11233 transitions. [2022-01-10 07:38:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:09,818 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, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 271 [2022-01-10 07:38:09,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:09,826 INFO L225 Difference]: With dead ends: 8682 [2022-01-10 07:38:09,826 INFO L226 Difference]: Without dead ends: 6112 [2022-01-10 07:38:09,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 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 07:38:09,830 INFO L933 BasicCegarLoop]: 4290 mSDtfsCounter, 160 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 8403 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:09,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 8403 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2022-01-10 07:38:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 6112. [2022-01-10 07:38:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 5618 states have (on average 1.3780704877180492) internal successors, (7742), 5638 states have internal predecessors, (7742), 280 states have call successors, (280), 196 states have call predecessors, (280), 212 states have return successors, (296), 278 states have call predecessors, (296), 280 states have call successors, (296) [2022-01-10 07:38:09,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 8318 transitions. [2022-01-10 07:38:09,969 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 8318 transitions. Word has length 271 [2022-01-10 07:38:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:09,970 INFO L470 AbstractCegarLoop]: Abstraction has 6112 states and 8318 transitions. [2022-01-10 07:38:09,970 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, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 07:38:09,970 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 8318 transitions. [2022-01-10 07:38:10,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-01-10 07:38:10,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:10,020 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:10,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:10,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:38:10,221 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash 193249546, now seen corresponding path program 1 times [2022-01-10 07:38:10,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:10,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659931719] [2022-01-10 07:38:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:10,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:10,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:10,223 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:38:10,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:38:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:10,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:10,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-01-10 07:38:10,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:10,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:10,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659931719] [2022-01-10 07:38:10,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659931719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:10,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:10,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:10,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643304486] [2022-01-10 07:38:10,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:10,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:10,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:10,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:10,683 INFO L87 Difference]: Start difference. First operand 6112 states and 8318 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 07:38:10,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:10,893 INFO L93 Difference]: Finished difference Result 10574 states and 13300 transitions. [2022-01-10 07:38:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:10,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 274 [2022-01-10 07:38:10,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:10,905 INFO L225 Difference]: With dead ends: 10574 [2022-01-10 07:38:10,905 INFO L226 Difference]: Without dead ends: 6337 [2022-01-10 07:38:10,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 272 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 07:38:10,912 INFO L933 BasicCegarLoop]: 4174 mSDtfsCounter, 4104 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4104 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:10,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4104 Valid, 4348 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:10,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2022-01-10 07:38:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 6310. [2022-01-10 07:38:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6310 states, 5790 states have (on average 1.3652849740932642) internal successors, (7905), 5811 states have internal predecessors, (7905), 295 states have call successors, (295), 206 states have call predecessors, (295), 223 states have return successors, (315), 293 states have call predecessors, (315), 295 states have call successors, (315) [2022-01-10 07:38:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6310 states to 6310 states and 8515 transitions. [2022-01-10 07:38:11,072 INFO L78 Accepts]: Start accepts. Automaton has 6310 states and 8515 transitions. Word has length 274 [2022-01-10 07:38:11,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:11,072 INFO L470 AbstractCegarLoop]: Abstraction has 6310 states and 8515 transitions. [2022-01-10 07:38:11,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 07:38:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6310 states and 8515 transitions. [2022-01-10 07:38:11,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-01-10 07:38:11,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:11,077 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:38:11,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:11,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:38:11,285 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1646891466, now seen corresponding path program 1 times [2022-01-10 07:38:11,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:11,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806047710] [2022-01-10 07:38:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:11,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:11,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:11,287 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:38:11,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:38:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:11,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:11,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-10 07:38:11,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:11,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:11,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806047710] [2022-01-10 07:38:11,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806047710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:11,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:11,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:11,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37331027] [2022-01-10 07:38:11,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:11,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:11,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:11,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:11,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:11,736 INFO L87 Difference]: Start difference. First operand 6310 states and 8515 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 07:38:11,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:11,974 INFO L93 Difference]: Finished difference Result 10751 states and 13471 transitions. [2022-01-10 07:38:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:11,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 276 [2022-01-10 07:38:11,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:11,985 INFO L225 Difference]: With dead ends: 10751 [2022-01-10 07:38:11,985 INFO L226 Difference]: Without dead ends: 6579 [2022-01-10 07:38:11,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 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 07:38:11,991 INFO L933 BasicCegarLoop]: 4173 mSDtfsCounter, 4105 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4105 SdHoareTripleChecker+Valid, 4345 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:11,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4105 Valid, 4345 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2022-01-10 07:38:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 6577. [2022-01-10 07:38:12,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 6023 states have (on average 1.349991698489125) internal successors, (8131), 6047 states have internal predecessors, (8131), 314 states have call successors, (314), 220 states have call predecessors, (314), 238 states have return successors, (342), 310 states have call predecessors, (342), 314 states have call successors, (342) [2022-01-10 07:38:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 8787 transitions. [2022-01-10 07:38:12,169 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 8787 transitions. Word has length 276 [2022-01-10 07:38:12,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:12,169 INFO L470 AbstractCegarLoop]: Abstraction has 6577 states and 8787 transitions. [2022-01-10 07:38:12,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 07:38:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 8787 transitions. [2022-01-10 07:38:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-01-10 07:38:12,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:12,174 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:12,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:12,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:38:12,383 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1593911426, now seen corresponding path program 1 times [2022-01-10 07:38:12,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:12,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317091616] [2022-01-10 07:38:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:12,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:12,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:12,385 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:38:12,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:38:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:12,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:12,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-01-10 07:38:12,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:12,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:12,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317091616] [2022-01-10 07:38:12,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317091616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:12,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:12,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:12,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727620482] [2022-01-10 07:38:12,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:12,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:12,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:12,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:12,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:12,778 INFO L87 Difference]: Start difference. First operand 6577 states and 8787 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 07:38:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:12,937 INFO L93 Difference]: Finished difference Result 10176 states and 12747 transitions. [2022-01-10 07:38:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:12,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 278 [2022-01-10 07:38:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:12,946 INFO L225 Difference]: With dead ends: 10176 [2022-01-10 07:38:12,947 INFO L226 Difference]: Without dead ends: 6577 [2022-01-10 07:38:12,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 276 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 07:38:12,951 INFO L933 BasicCegarLoop]: 4239 mSDtfsCounter, 137 mSDsluCounter, 4095 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 8334 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:12,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 8334 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:12,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6577 states. [2022-01-10 07:38:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6577 to 6577. [2022-01-10 07:38:13,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 6023 states have (on average 1.34401461065914) internal successors, (8095), 6047 states have internal predecessors, (8095), 314 states have call successors, (314), 220 states have call predecessors, (314), 238 states have return successors, (342), 310 states have call predecessors, (342), 314 states have call successors, (342) [2022-01-10 07:38:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 8751 transitions. [2022-01-10 07:38:13,119 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 8751 transitions. Word has length 278 [2022-01-10 07:38:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:13,119 INFO L470 AbstractCegarLoop]: Abstraction has 6577 states and 8751 transitions. [2022-01-10 07:38:13,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 07:38:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 8751 transitions. [2022-01-10 07:38:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-01-10 07:38:13,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:13,125 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:13,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:13,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:38:13,333 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:13,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1708997248, now seen corresponding path program 1 times [2022-01-10 07:38:13,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:13,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176206772] [2022-01-10 07:38:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:13,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:13,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:13,335 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:38:13,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:38:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:13,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:13,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-01-10 07:38:13,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:13,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:13,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176206772] [2022-01-10 07:38:13,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176206772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:13,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:13,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:13,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900933824] [2022-01-10 07:38:13,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:13,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:13,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:13,732 INFO L87 Difference]: Start difference. First operand 6577 states and 8751 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 07:38:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:13,918 INFO L93 Difference]: Finished difference Result 8034 states and 10317 transitions. [2022-01-10 07:38:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:13,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 281 [2022-01-10 07:38:13,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:13,927 INFO L225 Difference]: With dead ends: 8034 [2022-01-10 07:38:13,927 INFO L226 Difference]: Without dead ends: 6379 [2022-01-10 07:38:13,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 279 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 07:38:13,930 INFO L933 BasicCegarLoop]: 4276 mSDtfsCounter, 119 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 8399 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:13,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 8399 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:13,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6379 states. [2022-01-10 07:38:14,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6379 to 6379. [2022-01-10 07:38:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6379 states, 5851 states have (on average 1.351563835241839) internal successors, (7908), 5874 states have internal predecessors, (7908), 299 states have call successors, (299), 210 states have call predecessors, (299), 227 states have return successors, (323), 295 states have call predecessors, (323), 299 states have call successors, (323) [2022-01-10 07:38:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6379 states to 6379 states and 8530 transitions. [2022-01-10 07:38:14,095 INFO L78 Accepts]: Start accepts. Automaton has 6379 states and 8530 transitions. Word has length 281 [2022-01-10 07:38:14,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:14,096 INFO L470 AbstractCegarLoop]: Abstraction has 6379 states and 8530 transitions. [2022-01-10 07:38:14,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 07:38:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 6379 states and 8530 transitions. [2022-01-10 07:38:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-01-10 07:38:14,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:14,101 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:38:14,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:14,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:38:14,309 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:14,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1560449644, now seen corresponding path program 2 times [2022-01-10 07:38:14,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:14,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587202668] [2022-01-10 07:38:14,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 07:38:14,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:14,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:14,311 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:38:14,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 07:38:14,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 07:38:14,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 07:38:14,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:38:14,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 141 proven. 183 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 07:38:14,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:38:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-01-10 07:38:15,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:15,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587202668] [2022-01-10 07:38:15,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587202668] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 07:38:15,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 07:38:15,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2022-01-10 07:38:15,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335014482] [2022-01-10 07:38:15,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:15,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:38:15,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:15,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:38:15,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:38:15,219 INFO L87 Difference]: Start difference. First operand 6379 states and 8530 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-10 07:38:15,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:15,653 INFO L93 Difference]: Finished difference Result 6383 states and 8534 transitions. [2022-01-10 07:38:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:15,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 282 [2022-01-10 07:38:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:15,657 INFO L225 Difference]: With dead ends: 6383 [2022-01-10 07:38:15,657 INFO L226 Difference]: Without dead ends: 2123 [2022-01-10 07:38:15,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 556 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:38:15,661 INFO L933 BasicCegarLoop]: 4498 mSDtfsCounter, 4458 mSDsluCounter, 13221 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4458 SdHoareTripleChecker+Valid, 17719 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:15,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4458 Valid, 17719 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:38:15,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-01-10 07:38:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2022-01-10 07:38:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:38:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2022-01-10 07:38:15,678 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 282 [2022-01-10 07:38:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:15,679 INFO L470 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2022-01-10 07:38:15,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-10 07:38:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2022-01-10 07:38:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1653 [2022-01-10 07:38:15,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:15,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:15,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:15,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:38:15,904 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:15,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:15,904 INFO L85 PathProgramCache]: Analyzing trace with hash -85778683, now seen corresponding path program 1 times [2022-01-10 07:38:15,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:15,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546059213] [2022-01-10 07:38:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:15,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:15,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:15,914 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:38:15,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 07:38:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:16,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 07:38:16,315 INFO L286 TraceCheckSpWp]: Computing forward predicates...