/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.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:38:19,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:38:19,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:38:19,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:38:19,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:38:19,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:38:19,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:38:19,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:38:19,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:38:19,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:38:19,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:38:19,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:38:19,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:38:19,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:38:19,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:38:19,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:38:19,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:38:19,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:38:19,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:38:19,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:38:19,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:38:19,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:38:19,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:38:19,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:38:19,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:38:19,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:38:19,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:38:19,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:38:19,683 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 07:38:19,716 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:38:19,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:38:19,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:38:19,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:38:19,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:38:19,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:38:19,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:38:19,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:38:19,718 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:38:19,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:38:19,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:38:19,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:38:19,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:38:19,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:38:19,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:38:19,719 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:38:19,719 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:38:19,719 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:38:19,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:38:19,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:38:19,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:38:19,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:38:19,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:38:19,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:38:19,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:38:19,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:38:19,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:38:19,720 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:38:19,720 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:38:19,720 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:38:19,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:38:19,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:38:19,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:38:19,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:38:19,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:38:19,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:38:19,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:38:19,958 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:38:19,958 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:38:19,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.10.cil-2.c [2022-01-10 07:38:20,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abdef6d27/0ad2d8a3e5f249aa908e4f7927362645/FLAG758678b29 [2022-01-10 07:38:20,765 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:38:20,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.10.cil-2.c [2022-01-10 07:38:20,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abdef6d27/0ad2d8a3e5f249aa908e4f7927362645/FLAG758678b29 [2022-01-10 07:38:21,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abdef6d27/0ad2d8a3e5f249aa908e4f7927362645 [2022-01-10 07:38:21,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:38:21,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:38:21,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:38:21,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:38:21,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:38:21,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:38:21" (1/1) ... [2022-01-10 07:38:21,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70466c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:21, skipping insertion in model container [2022-01-10 07:38:21,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:38:21" (1/1) ... [2022-01-10 07:38:21,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:38:21,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:38:22,858 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.10.cil-2.c[377069,377082] [2022-01-10 07:38:22,882 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.10.cil-2.c[383339,383352] [2022-01-10 07:38:23,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:38:23,059 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:38:23,666 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.10.cil-2.c[377069,377082] [2022-01-10 07:38:23,672 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.10.cil-2.c[383339,383352] [2022-01-10 07:38:23,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:38:23,739 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:38:23,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23 WrapperNode [2022-01-10 07:38:23,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:38:23,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:38:23,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:38:23,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:38:23,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (1/1) ... [2022-01-10 07:38:23,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (1/1) ... [2022-01-10 07:38:24,205 INFO L137 Inliner]: procedures = 65, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13045 [2022-01-10 07:38:24,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:38:24,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:38:24,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:38:24,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:38:24,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (1/1) ... [2022-01-10 07:38:24,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (1/1) ... [2022-01-10 07:38:24,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (1/1) ... [2022-01-10 07:38:24,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (1/1) ... [2022-01-10 07:38:24,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (1/1) ... [2022-01-10 07:38:24,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (1/1) ... [2022-01-10 07:38:24,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (1/1) ... [2022-01-10 07:38:24,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:38:24,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:38:24,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:38:24,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:38:24,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (1/1) ... [2022-01-10 07:38:24,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:38:24,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:38:24,668 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 07:38:24,674 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 07:38:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:38:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:38:24,701 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:38:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:38:24,701 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:38:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:38:24,701 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:38:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:38:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:38:24,701 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:38:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:38:24,701 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:38:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:38:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:38:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:38:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:38:24,809 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:38:24,811 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:38:31,728 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:38:31,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:38:31,756 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-10 07:38:31,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:38:31 BoogieIcfgContainer [2022-01-10 07:38:31,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:38:31,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:38:31,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:38:31,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:38:31,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:38:21" (1/3) ... [2022-01-10 07:38:31,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f08aa27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:38:31, skipping insertion in model container [2022-01-10 07:38:31,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:23" (2/3) ... [2022-01-10 07:38:31,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f08aa27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:38:31, skipping insertion in model container [2022-01-10 07:38:31,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:38:31" (3/3) ... [2022-01-10 07:38:31,767 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.10.cil-2.c [2022-01-10 07:38:31,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:38:31,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:38:31,817 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:38:31,825 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 07:38:31,825 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:38:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:31,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:31,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:31,888 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] [2022-01-10 07:38:31,889 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:31,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2022-01-10 07:38:31,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:31,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384082934] [2022-01-10 07:38:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:31,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:31,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:31,906 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 07:38:31,907 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 07:38:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:32,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:32,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:32,349 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 07:38:32,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:32,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:32,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384082934] [2022-01-10 07:38:32,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384082934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:32,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:32,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:32,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431377120] [2022-01-10 07:38:32,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:32,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:32,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:32,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:32,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:32,379 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 07:38:32,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:32,511 INFO L93 Difference]: Finished difference Result 5020 states and 9239 transitions. [2022-01-10 07:38:32,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:32,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:32,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:32,533 INFO L225 Difference]: With dead ends: 5020 [2022-01-10 07:38:32,533 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 07:38:32,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 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 07:38:32,548 INFO L933 BasicCegarLoop]: 4538 mSDtfsCounter, 505 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 8560 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 07:38:32,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 8560 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:32,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 07:38:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2022-01-10 07:38:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2022-01-10 07:38:32,659 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2022-01-10 07:38:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:32,661 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2022-01-10 07:38:32,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 07:38:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2022-01-10 07:38:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:32,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:32,664 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] [2022-01-10 07:38:32,680 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 07:38:32,872 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 07:38:32,872 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2022-01-10 07:38:32,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:32,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473578845] [2022-01-10 07:38:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:32,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:32,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:32,875 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 07:38:32,877 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 07:38:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:33,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:33,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:33,456 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 07:38:33,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:33,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:33,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473578845] [2022-01-10 07:38:33,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473578845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:33,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:33,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:33,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741160580] [2022-01-10 07:38:33,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:33,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:33,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:33,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:33,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:33,459 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:33,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:33,856 INFO L93 Difference]: Finished difference Result 2757 states and 4956 transitions. [2022-01-10 07:38:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:33,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:33,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:33,867 INFO L225 Difference]: With dead ends: 2757 [2022-01-10 07:38:33,869 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 07:38:33,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:33,873 INFO L933 BasicCegarLoop]: 4440 mSDtfsCounter, 4648 mSDsluCounter, 8469 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 12909 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:33,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4666 Valid, 12909 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 07:38:33,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2022-01-10 07:38:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.8290562913907285) internal successors, (4419), 2418 states have internal predecessors, (4419), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4467 transitions. [2022-01-10 07:38:33,930 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4467 transitions. Word has length 156 [2022-01-10 07:38:33,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:33,931 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4467 transitions. [2022-01-10 07:38:33,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4467 transitions. [2022-01-10 07:38:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:33,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:33,933 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] [2022-01-10 07:38:33,953 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 07:38:34,141 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 07:38:34,142 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:34,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:34,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1000432395, now seen corresponding path program 1 times [2022-01-10 07:38:34,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:34,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501138891] [2022-01-10 07:38:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:34,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:34,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:34,145 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 07:38:34,181 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 07:38:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:34,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:34,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:34,542 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 07:38:34,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:34,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:34,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501138891] [2022-01-10 07:38:34,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501138891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:34,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:34,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:34,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532896622] [2022-01-10 07:38:34,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:34,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:34,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:34,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:34,544 INFO L87 Difference]: Start difference. First operand 2448 states and 4467 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:34,871 INFO L93 Difference]: Finished difference Result 2757 states and 4950 transitions. [2022-01-10 07:38:34,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:34,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:34,879 INFO L225 Difference]: With dead ends: 2757 [2022-01-10 07:38:34,879 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 07:38:34,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:34,881 INFO L933 BasicCegarLoop]: 4437 mSDtfsCounter, 4642 mSDsluCounter, 8465 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 12902 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:34,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4660 Valid, 12902 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:34,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 07:38:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2022-01-10 07:38:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.8278145695364238) internal successors, (4416), 2418 states have internal predecessors, (4416), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:34,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4464 transitions. [2022-01-10 07:38:34,929 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4464 transitions. Word has length 156 [2022-01-10 07:38:34,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:34,930 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4464 transitions. [2022-01-10 07:38:34,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:34,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4464 transitions. [2022-01-10 07:38:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:34,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:34,932 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] [2022-01-10 07:38:34,955 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 07:38:35,140 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 07:38:35,140 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:35,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:35,141 INFO L85 PathProgramCache]: Analyzing trace with hash -636965897, now seen corresponding path program 1 times [2022-01-10 07:38:35,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:35,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554800494] [2022-01-10 07:38:35,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:35,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:35,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:35,143 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 07:38:35,145 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 07:38:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:35,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:35,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:35,509 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 07:38:35,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:35,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:35,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554800494] [2022-01-10 07:38:35,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554800494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:35,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:35,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:35,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040829573] [2022-01-10 07:38:35,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:35,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:35,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:35,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:35,511 INFO L87 Difference]: Start difference. First operand 2448 states and 4464 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:35,862 INFO L93 Difference]: Finished difference Result 2757 states and 4944 transitions. [2022-01-10 07:38:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:35,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:35,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:35,870 INFO L225 Difference]: With dead ends: 2757 [2022-01-10 07:38:35,871 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 07:38:35,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:35,873 INFO L933 BasicCegarLoop]: 4434 mSDtfsCounter, 4636 mSDsluCounter, 8461 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 12895 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:35,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 12895 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 07:38:35,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2022-01-10 07:38:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.8265728476821192) internal successors, (4413), 2418 states have internal predecessors, (4413), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4461 transitions. [2022-01-10 07:38:35,921 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4461 transitions. Word has length 156 [2022-01-10 07:38:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:35,922 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4461 transitions. [2022-01-10 07:38:35,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4461 transitions. [2022-01-10 07:38:35,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:35,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:35,924 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] [2022-01-10 07:38:35,933 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 07:38:36,131 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 07:38:36,132 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1377505805, now seen corresponding path program 1 times [2022-01-10 07:38:36,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:36,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088102413] [2022-01-10 07:38:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:36,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:36,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:36,154 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 07:38:36,156 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 07:38:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:36,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:36,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:38:36,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:36,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:36,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088102413] [2022-01-10 07:38:36,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088102413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:36,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:36,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:36,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275983415] [2022-01-10 07:38:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:36,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:36,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:36,638 INFO L87 Difference]: Start difference. First operand 2448 states and 4461 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:36,992 INFO L93 Difference]: Finished difference Result 2757 states and 4938 transitions. [2022-01-10 07:38:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:36,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:36,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:36,999 INFO L225 Difference]: With dead ends: 2757 [2022-01-10 07:38:36,999 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 07:38:37,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:37,002 INFO L933 BasicCegarLoop]: 4431 mSDtfsCounter, 4630 mSDsluCounter, 8457 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 12888 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:37,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4648 Valid, 12888 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:37,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 07:38:37,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2022-01-10 07:38:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.8253311258278146) internal successors, (4410), 2418 states have internal predecessors, (4410), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4458 transitions. [2022-01-10 07:38:37,047 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4458 transitions. Word has length 156 [2022-01-10 07:38:37,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:37,047 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4458 transitions. [2022-01-10 07:38:37,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4458 transitions. [2022-01-10 07:38:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:37,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:37,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:38:37,072 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 07:38:37,257 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 07:38:37,257 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:37,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1262846857, now seen corresponding path program 1 times [2022-01-10 07:38:37,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:37,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629342070] [2022-01-10 07:38:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:37,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:37,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:37,260 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 07:38:37,271 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 07:38:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:37,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:37,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:37,637 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 07:38:37,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:37,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:37,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629342070] [2022-01-10 07:38:37,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629342070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:37,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:37,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:37,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266611947] [2022-01-10 07:38:37,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:37,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:37,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:37,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:37,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:37,639 INFO L87 Difference]: Start difference. First operand 2448 states and 4458 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:37,962 INFO L93 Difference]: Finished difference Result 2757 states and 4932 transitions. [2022-01-10 07:38:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:37,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:37,971 INFO L225 Difference]: With dead ends: 2757 [2022-01-10 07:38:37,971 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 07:38:37,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:37,974 INFO L933 BasicCegarLoop]: 4428 mSDtfsCounter, 4624 mSDsluCounter, 8453 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4642 SdHoareTripleChecker+Valid, 12881 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:37,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4642 Valid, 12881 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:37,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 07:38:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2022-01-10 07:38:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.8240894039735098) internal successors, (4407), 2418 states have internal predecessors, (4407), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:38,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4455 transitions. [2022-01-10 07:38:38,016 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4455 transitions. Word has length 156 [2022-01-10 07:38:38,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:38,016 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4455 transitions. [2022-01-10 07:38:38,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4455 transitions. [2022-01-10 07:38:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:38,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:38,018 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] [2022-01-10 07:38:38,028 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 07:38:38,228 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 07:38:38,229 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:38,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash -982053517, now seen corresponding path program 1 times [2022-01-10 07:38:38,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:38,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367744371] [2022-01-10 07:38:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:38,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:38,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:38,231 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 07:38:38,232 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 07:38:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:38,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:38,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:38,549 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 07:38:38,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:38,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:38,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367744371] [2022-01-10 07:38:38,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367744371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:38,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:38,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:38,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015050444] [2022-01-10 07:38:38,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:38,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:38,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:38,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:38,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:38,551 INFO L87 Difference]: Start difference. First operand 2448 states and 4455 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:38,853 INFO L93 Difference]: Finished difference Result 2757 states and 4926 transitions. [2022-01-10 07:38:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:38,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:38,861 INFO L225 Difference]: With dead ends: 2757 [2022-01-10 07:38:38,861 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 07:38:38,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:38,864 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4618 mSDsluCounter, 8449 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4636 SdHoareTripleChecker+Valid, 12874 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:38,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4636 Valid, 12874 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:38:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 07:38:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2022-01-10 07:38:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.8228476821192052) internal successors, (4404), 2418 states have internal predecessors, (4404), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4452 transitions. [2022-01-10 07:38:38,912 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4452 transitions. Word has length 156 [2022-01-10 07:38:38,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:38,912 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4452 transitions. [2022-01-10 07:38:38,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4452 transitions. [2022-01-10 07:38:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:38,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:38,914 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] [2022-01-10 07:38:38,941 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 07:38:39,125 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 07:38:39,126 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:39,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:39,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1520856311, now seen corresponding path program 1 times [2022-01-10 07:38:39,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:39,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012433974] [2022-01-10 07:38:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:39,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:39,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:39,128 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 07:38:39,131 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 07:38:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:39,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:39,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:39,467 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 07:38:39,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:39,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:39,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012433974] [2022-01-10 07:38:39,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012433974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:39,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:39,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:39,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777510335] [2022-01-10 07:38:39,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:39,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:39,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:39,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:39,469 INFO L87 Difference]: Start difference. First operand 2448 states and 4452 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:39,775 INFO L93 Difference]: Finished difference Result 2757 states and 4920 transitions. [2022-01-10 07:38:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:39,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:39,783 INFO L225 Difference]: With dead ends: 2757 [2022-01-10 07:38:39,783 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 07:38:39,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:39,786 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 4612 mSDsluCounter, 8445 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 12867 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:39,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4630 Valid, 12867 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:38:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 07:38:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2022-01-10 07:38:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.8216059602649006) internal successors, (4401), 2418 states have internal predecessors, (4401), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4449 transitions. [2022-01-10 07:38:39,829 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4449 transitions. Word has length 156 [2022-01-10 07:38:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:39,829 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4449 transitions. [2022-01-10 07:38:39,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4449 transitions. [2022-01-10 07:38:39,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:39,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:39,831 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] [2022-01-10 07:38:39,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 07:38:40,038 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 07:38:40,039 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:40,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1307898637, now seen corresponding path program 1 times [2022-01-10 07:38:40,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:40,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505434152] [2022-01-10 07:38:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:40,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:40,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:40,042 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 07:38:40,043 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 07:38:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:40,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:40,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:40,468 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 07:38:40,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:40,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:40,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505434152] [2022-01-10 07:38:40,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505434152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:40,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:40,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:40,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087813796] [2022-01-10 07:38:40,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:40,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:40,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:40,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:40,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:40,472 INFO L87 Difference]: Start difference. First operand 2448 states and 4449 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:40,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:40,891 INFO L93 Difference]: Finished difference Result 2757 states and 4914 transitions. [2022-01-10 07:38:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:40,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:40,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:40,911 INFO L225 Difference]: With dead ends: 2757 [2022-01-10 07:38:40,911 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 07:38:40,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:40,914 INFO L933 BasicCegarLoop]: 4419 mSDtfsCounter, 4605 mSDsluCounter, 8441 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4623 SdHoareTripleChecker+Valid, 12860 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:40,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4623 Valid, 12860 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 07:38:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2022-01-10 07:38:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.820364238410596) internal successors, (4398), 2418 states have internal predecessors, (4398), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4446 transitions. [2022-01-10 07:38:40,953 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4446 transitions. Word has length 156 [2022-01-10 07:38:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:40,953 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4446 transitions. [2022-01-10 07:38:40,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4446 transitions. [2022-01-10 07:38:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:40,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:40,955 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] [2022-01-10 07:38:40,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 07:38:41,163 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 07:38:41,163 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:41,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:41,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1462797329, now seen corresponding path program 1 times [2022-01-10 07:38:41,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:41,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891478247] [2022-01-10 07:38:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:41,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:41,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:41,168 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 07:38:41,172 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 07:38:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:41,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:41,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:41,500 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 07:38:41,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:41,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:41,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891478247] [2022-01-10 07:38:41,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891478247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:41,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:41,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:41,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146150793] [2022-01-10 07:38:41,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:41,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:41,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:41,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:41,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:41,502 INFO L87 Difference]: Start difference. First operand 2448 states and 4446 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:41,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:41,941 INFO L93 Difference]: Finished difference Result 2757 states and 4908 transitions. [2022-01-10 07:38:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:41,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:41,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:41,955 INFO L225 Difference]: With dead ends: 2757 [2022-01-10 07:38:41,956 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 07:38:41,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:41,959 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4599 mSDsluCounter, 8437 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 12853 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:41,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4617 Valid, 12853 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:38:41,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 07:38:42,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2022-01-10 07:38:42,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.8191225165562914) internal successors, (4395), 2418 states have internal predecessors, (4395), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:38:42,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4443 transitions. [2022-01-10 07:38:42,025 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4443 transitions. Word has length 156 [2022-01-10 07:38:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:42,025 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4443 transitions. [2022-01-10 07:38:42,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:42,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4443 transitions. [2022-01-10 07:38:42,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:42,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:42,028 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] [2022-01-10 07:38:42,057 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 07:38:42,239 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 07:38:42,240 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:42,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:42,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2125573361, now seen corresponding path program 1 times [2022-01-10 07:38:42,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:42,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273345520] [2022-01-10 07:38:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:42,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:42,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:42,243 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 07:38:42,244 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 07:38:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:42,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:42,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:42,596 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 07:38:42,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:42,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:42,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273345520] [2022-01-10 07:38:42,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273345520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:42,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:42,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:42,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026279908] [2022-01-10 07:38:42,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:42,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:42,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:42,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:42,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:42,598 INFO L87 Difference]: Start difference. First operand 2448 states and 4443 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:43,006 INFO L93 Difference]: Finished difference Result 2839 states and 5030 transitions. [2022-01-10 07:38:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:43,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:43,011 INFO L225 Difference]: With dead ends: 2839 [2022-01-10 07:38:43,011 INFO L226 Difference]: Without dead ends: 2530 [2022-01-10 07:38:43,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:43,013 INFO L933 BasicCegarLoop]: 4413 mSDtfsCounter, 4699 mSDsluCounter, 8432 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 12845 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:43,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 12845 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:43,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2022-01-10 07:38:43,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2530. [2022-01-10 07:38:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2495 states have (on average 1.804809619238477) internal successors, (4503), 2497 states have internal predecessors, (4503), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-10 07:38:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4553 transitions. [2022-01-10 07:38:43,095 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4553 transitions. Word has length 156 [2022-01-10 07:38:43,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:43,096 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4553 transitions. [2022-01-10 07:38:43,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:43,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4553 transitions. [2022-01-10 07:38:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:43,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:43,099 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] [2022-01-10 07:38:43,128 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 07:38:43,309 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 07:38:43,310 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2130635950, now seen corresponding path program 1 times [2022-01-10 07:38:43,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:43,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056673890] [2022-01-10 07:38:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:43,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:43,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:43,329 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 07:38:43,343 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 07:38:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:43,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:43,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:43,744 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 07:38:43,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:43,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:43,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056673890] [2022-01-10 07:38:43,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056673890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:43,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:43,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:43,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576331379] [2022-01-10 07:38:43,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:43,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:43,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:43,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:43,746 INFO L87 Difference]: Start difference. First operand 2530 states and 4553 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:44,241 INFO L93 Difference]: Finished difference Result 3003 states and 5250 transitions. [2022-01-10 07:38:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:44,247 INFO L225 Difference]: With dead ends: 3003 [2022-01-10 07:38:44,247 INFO L226 Difference]: Without dead ends: 2612 [2022-01-10 07:38:44,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:44,249 INFO L933 BasicCegarLoop]: 4411 mSDtfsCounter, 4692 mSDsluCounter, 8428 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4710 SdHoareTripleChecker+Valid, 12839 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:44,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4710 Valid, 12839 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:38:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2022-01-10 07:38:44,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2612. [2022-01-10 07:38:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 2574 states have (on average 1.7905982905982907) internal successors, (4609), 2576 states have internal predecessors, (4609), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:38:44,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 4661 transitions. [2022-01-10 07:38:44,300 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 4661 transitions. Word has length 156 [2022-01-10 07:38:44,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:44,300 INFO L470 AbstractCegarLoop]: Abstraction has 2612 states and 4661 transitions. [2022-01-10 07:38:44,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:44,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 4661 transitions. [2022-01-10 07:38:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:44,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:44,302 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] [2022-01-10 07:38:44,323 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 07:38:44,510 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 07:38:44,511 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:44,511 INFO L85 PathProgramCache]: Analyzing trace with hash 83705650, now seen corresponding path program 1 times [2022-01-10 07:38:44,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:44,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177828692] [2022-01-10 07:38:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:44,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:44,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:44,513 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 07:38:44,514 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 07:38:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:44,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:44,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:44,903 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 07:38:44,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:44,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:44,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177828692] [2022-01-10 07:38:44,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177828692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:44,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:44,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:44,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953006491] [2022-01-10 07:38:44,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:44,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:44,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:44,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:44,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:44,905 INFO L87 Difference]: Start difference. First operand 2612 states and 4661 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:45,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:45,298 INFO L93 Difference]: Finished difference Result 3167 states and 5466 transitions. [2022-01-10 07:38:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:45,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:45,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:45,304 INFO L225 Difference]: With dead ends: 3167 [2022-01-10 07:38:45,304 INFO L226 Difference]: Without dead ends: 2694 [2022-01-10 07:38:45,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:45,306 INFO L933 BasicCegarLoop]: 4406 mSDtfsCounter, 4686 mSDsluCounter, 8424 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4704 SdHoareTripleChecker+Valid, 12830 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:45,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4704 Valid, 12830 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:45,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2022-01-10 07:38:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2694. [2022-01-10 07:38:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2653 states have (on average 1.7764794572182434) internal successors, (4713), 2655 states have internal predecessors, (4713), 27 states have call successors, (27), 12 states have call predecessors, (27), 12 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 07:38:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 4767 transitions. [2022-01-10 07:38:45,358 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 4767 transitions. Word has length 156 [2022-01-10 07:38:45,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:45,358 INFO L470 AbstractCegarLoop]: Abstraction has 2694 states and 4767 transitions. [2022-01-10 07:38:45,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:45,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 4767 transitions. [2022-01-10 07:38:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:45,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:45,360 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] [2022-01-10 07:38:45,370 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 07:38:45,570 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 07:38:45,570 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash -42621073, now seen corresponding path program 1 times [2022-01-10 07:38:45,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:45,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143470602] [2022-01-10 07:38:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:45,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:45,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:45,572 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 07:38:45,574 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 07:38:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:45,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:45,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:45,878 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 07:38:45,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:45,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143470602] [2022-01-10 07:38:45,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143470602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:45,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:45,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:45,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807765192] [2022-01-10 07:38:45,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:45,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:45,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:45,880 INFO L87 Difference]: Start difference. First operand 2694 states and 4767 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:46,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:46,300 INFO L93 Difference]: Finished difference Result 3331 states and 5678 transitions. [2022-01-10 07:38:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:46,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:46,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:46,306 INFO L225 Difference]: With dead ends: 3331 [2022-01-10 07:38:46,306 INFO L226 Difference]: Without dead ends: 2776 [2022-01-10 07:38:46,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:46,308 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 4679 mSDsluCounter, 8420 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4697 SdHoareTripleChecker+Valid, 12823 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:46,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4697 Valid, 12823 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2022-01-10 07:38:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2776. [2022-01-10 07:38:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2732 states have (on average 1.7624450951683748) internal successors, (4815), 2734 states have internal predecessors, (4815), 28 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-10 07:38:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 4871 transitions. [2022-01-10 07:38:46,357 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 4871 transitions. Word has length 156 [2022-01-10 07:38:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:46,357 INFO L470 AbstractCegarLoop]: Abstraction has 2776 states and 4871 transitions. [2022-01-10 07:38:46,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 4871 transitions. [2022-01-10 07:38:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:46,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:46,359 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] [2022-01-10 07:38:46,375 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 07:38:46,567 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 07:38:46,568 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:46,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1207806708, now seen corresponding path program 1 times [2022-01-10 07:38:46,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:46,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329165944] [2022-01-10 07:38:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:46,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:46,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:46,570 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 07:38:46,570 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 07:38:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:46,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:46,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:46,888 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 07:38:46,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:46,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:46,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329165944] [2022-01-10 07:38:46,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329165944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:46,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:46,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:46,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889867280] [2022-01-10 07:38:46,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:46,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:46,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:46,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:46,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:46,889 INFO L87 Difference]: Start difference. First operand 2776 states and 4871 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:47,280 INFO L93 Difference]: Finished difference Result 3495 states and 5886 transitions. [2022-01-10 07:38:47,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:47,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:47,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:47,285 INFO L225 Difference]: With dead ends: 3495 [2022-01-10 07:38:47,286 INFO L226 Difference]: Without dead ends: 2858 [2022-01-10 07:38:47,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:47,287 INFO L933 BasicCegarLoop]: 4400 mSDtfsCounter, 4672 mSDsluCounter, 8416 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4690 SdHoareTripleChecker+Valid, 12816 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:47,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4690 Valid, 12816 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2022-01-10 07:38:47,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2858. [2022-01-10 07:38:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2811 states have (on average 1.7484880825329063) internal successors, (4915), 2813 states have internal predecessors, (4915), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 07:38:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 4973 transitions. [2022-01-10 07:38:47,336 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 4973 transitions. Word has length 156 [2022-01-10 07:38:47,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:47,337 INFO L470 AbstractCegarLoop]: Abstraction has 2858 states and 4973 transitions. [2022-01-10 07:38:47,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:47,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 4973 transitions. [2022-01-10 07:38:47,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:47,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:47,338 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] [2022-01-10 07:38:47,348 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 07:38:47,546 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 07:38:47,547 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:47,547 INFO L85 PathProgramCache]: Analyzing trace with hash 177211120, now seen corresponding path program 1 times [2022-01-10 07:38:47,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:47,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355421684] [2022-01-10 07:38:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:47,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:47,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:47,549 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 07:38:47,551 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 07:38:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:47,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:47,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:47,877 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 07:38:47,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:47,877 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:47,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355421684] [2022-01-10 07:38:47,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355421684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:47,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:47,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:47,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341769337] [2022-01-10 07:38:47,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:47,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:47,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:47,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:47,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:47,880 INFO L87 Difference]: Start difference. First operand 2858 states and 4973 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:48,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:48,286 INFO L93 Difference]: Finished difference Result 3659 states and 6090 transitions. [2022-01-10 07:38:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:48,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:48,293 INFO L225 Difference]: With dead ends: 3659 [2022-01-10 07:38:48,293 INFO L226 Difference]: Without dead ends: 2940 [2022-01-10 07:38:48,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:48,295 INFO L933 BasicCegarLoop]: 4397 mSDtfsCounter, 4664 mSDsluCounter, 8412 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 12809 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:48,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4682 Valid, 12809 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2022-01-10 07:38:48,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2940. [2022-01-10 07:38:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2890 states have (on average 1.7346020761245675) internal successors, (5013), 2892 states have internal predecessors, (5013), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-10 07:38:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 5073 transitions. [2022-01-10 07:38:48,350 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 5073 transitions. Word has length 156 [2022-01-10 07:38:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:48,351 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 5073 transitions. [2022-01-10 07:38:48,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 5073 transitions. [2022-01-10 07:38:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:48,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:48,352 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] [2022-01-10 07:38:48,379 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 07:38:48,560 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 07:38:48,561 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1799278100, now seen corresponding path program 1 times [2022-01-10 07:38:48,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:48,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873537385] [2022-01-10 07:38:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:48,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:48,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:48,563 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 07:38:48,564 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 07:38:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:48,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:48,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:48,880 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 07:38:48,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:48,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:48,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873537385] [2022-01-10 07:38:48,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873537385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:48,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:48,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:48,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841011499] [2022-01-10 07:38:48,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:48,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:48,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:48,882 INFO L87 Difference]: Start difference. First operand 2940 states and 5073 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:49,315 INFO L93 Difference]: Finished difference Result 3823 states and 6290 transitions. [2022-01-10 07:38:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:49,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:49,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:49,320 INFO L225 Difference]: With dead ends: 3823 [2022-01-10 07:38:49,320 INFO L226 Difference]: Without dead ends: 3022 [2022-01-10 07:38:49,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:49,323 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 4657 mSDsluCounter, 8408 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 12802 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:49,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4675 Valid, 12802 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:49,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-01-10 07:38:49,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 3022. [2022-01-10 07:38:49,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 2969 states have (on average 1.7207814078814416) internal successors, (5109), 2971 states have internal predecessors, (5109), 31 states have call successors, (31), 20 states have call predecessors, (31), 20 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 07:38:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 5171 transitions. [2022-01-10 07:38:49,381 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 5171 transitions. Word has length 156 [2022-01-10 07:38:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:49,381 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 5171 transitions. [2022-01-10 07:38:49,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 5171 transitions. [2022-01-10 07:38:49,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:49,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:49,382 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] [2022-01-10 07:38:49,407 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 07:38:49,590 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 07:38:49,591 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1383786513, now seen corresponding path program 1 times [2022-01-10 07:38:49,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:49,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641085133] [2022-01-10 07:38:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:49,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:49,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:49,597 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 07:38:49,599 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 07:38:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:49,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:49,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:49,864 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 07:38:49,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:49,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:49,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641085133] [2022-01-10 07:38:49,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641085133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:49,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:49,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:49,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508681534] [2022-01-10 07:38:49,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:49,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:49,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:49,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:49,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:49,866 INFO L87 Difference]: Start difference. First operand 3022 states and 5171 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:50,248 INFO L93 Difference]: Finished difference Result 3987 states and 6486 transitions. [2022-01-10 07:38:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:50,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:50,254 INFO L225 Difference]: With dead ends: 3987 [2022-01-10 07:38:50,254 INFO L226 Difference]: Without dead ends: 3104 [2022-01-10 07:38:50,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:50,257 INFO L933 BasicCegarLoop]: 4391 mSDtfsCounter, 4650 mSDsluCounter, 8404 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 12795 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:50,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4668 Valid, 12795 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2022-01-10 07:38:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 3104. [2022-01-10 07:38:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3048 states have (on average 1.707020997375328) internal successors, (5203), 3050 states have internal predecessors, (5203), 32 states have call successors, (32), 22 states have call predecessors, (32), 22 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-10 07:38:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5267 transitions. [2022-01-10 07:38:50,313 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5267 transitions. Word has length 156 [2022-01-10 07:38:50,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:50,313 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5267 transitions. [2022-01-10 07:38:50,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:50,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5267 transitions. [2022-01-10 07:38:50,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:50,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:50,315 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] [2022-01-10 07:38:50,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:50,523 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 07:38:50,523 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:50,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:50,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1497574933, now seen corresponding path program 1 times [2022-01-10 07:38:50,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:50,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262013264] [2022-01-10 07:38:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:50,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:50,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:50,525 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 07:38:50,551 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 07:38:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:50,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:50,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:50,789 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 07:38:50,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:50,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:50,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262013264] [2022-01-10 07:38:50,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262013264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:50,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:50,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:50,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73156200] [2022-01-10 07:38:50,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:50,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:50,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:50,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:50,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:50,791 INFO L87 Difference]: Start difference. First operand 3104 states and 5267 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:51,245 INFO L93 Difference]: Finished difference Result 4151 states and 6678 transitions. [2022-01-10 07:38:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:51,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:51,251 INFO L225 Difference]: With dead ends: 4151 [2022-01-10 07:38:51,251 INFO L226 Difference]: Without dead ends: 3186 [2022-01-10 07:38:51,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:51,254 INFO L933 BasicCegarLoop]: 4388 mSDtfsCounter, 4643 mSDsluCounter, 8400 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4661 SdHoareTripleChecker+Valid, 12788 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:51,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4661 Valid, 12788 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2022-01-10 07:38:51,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 3186. [2022-01-10 07:38:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 3127 states have (on average 1.6933162775823474) internal successors, (5295), 3129 states have internal predecessors, (5295), 33 states have call successors, (33), 24 states have call predecessors, (33), 24 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-10 07:38:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5361 transitions. [2022-01-10 07:38:51,328 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5361 transitions. Word has length 156 [2022-01-10 07:38:51,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:51,328 INFO L470 AbstractCegarLoop]: Abstraction has 3186 states and 5361 transitions. [2022-01-10 07:38:51,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:51,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5361 transitions. [2022-01-10 07:38:51,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:51,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:51,329 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] [2022-01-10 07:38:51,341 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 07:38:51,539 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 07:38:51,539 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:51,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:51,540 INFO L85 PathProgramCache]: Analyzing trace with hash -254069520, now seen corresponding path program 1 times [2022-01-10 07:38:51,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:51,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904603453] [2022-01-10 07:38:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:51,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:51,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:51,542 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 07:38:51,548 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 07:38:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:51,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:51,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:51,868 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 07:38:51,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:51,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:51,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904603453] [2022-01-10 07:38:51,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904603453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:51,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:51,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:51,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571249875] [2022-01-10 07:38:51,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:51,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:51,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:51,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:51,870 INFO L87 Difference]: Start difference. First operand 3186 states and 5361 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:52,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:52,290 INFO L93 Difference]: Finished difference Result 4315 states and 6866 transitions. [2022-01-10 07:38:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:52,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:52,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:52,295 INFO L225 Difference]: With dead ends: 4315 [2022-01-10 07:38:52,295 INFO L226 Difference]: Without dead ends: 3268 [2022-01-10 07:38:52,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:38:52,298 INFO L933 BasicCegarLoop]: 4385 mSDtfsCounter, 4636 mSDsluCounter, 8396 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 12781 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:52,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 12781 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:38:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2022-01-10 07:38:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3268. [2022-01-10 07:38:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 3206 states have (on average 1.6796631316281971) internal successors, (5385), 3208 states have internal predecessors, (5385), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 07:38:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 5453 transitions. [2022-01-10 07:38:52,371 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 5453 transitions. Word has length 156 [2022-01-10 07:38:52,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:52,371 INFO L470 AbstractCegarLoop]: Abstraction has 3268 states and 5453 transitions. [2022-01-10 07:38:52,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 07:38:52,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 5453 transitions. [2022-01-10 07:38:52,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:52,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:52,373 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] [2022-01-10 07:38:52,397 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 07:38:52,581 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 07:38:52,581 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:52,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash 930168300, now seen corresponding path program 1 times [2022-01-10 07:38:52,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:52,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694979941] [2022-01-10 07:38:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:52,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:52,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:52,596 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 07:38:52,597 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 07:38:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:52,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:52,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:38:52,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:52,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:52,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694979941] [2022-01-10 07:38:52,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694979941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:52,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:52,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:38:52,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591474896] [2022-01-10 07:38:52,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:52,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:52,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:52,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:52,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:52,963 INFO L87 Difference]: Start difference. First operand 3268 states and 5453 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:53,071 INFO L93 Difference]: Finished difference Result 4543 states and 7131 transitions. [2022-01-10 07:38:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:53,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:53,077 INFO L225 Difference]: With dead ends: 4543 [2022-01-10 07:38:53,077 INFO L226 Difference]: Without dead ends: 3415 [2022-01-10 07:38:53,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 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 07:38:53,080 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 401 mSDsluCounter, 13384 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 17794 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 07:38:53,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 17794 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2022-01-10 07:38:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 3271. [2022-01-10 07:38:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3271 states, 3209 states have (on average 1.6759114989093176) internal successors, (5378), 3211 states have internal predecessors, (5378), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 07:38:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 5446 transitions. [2022-01-10 07:38:53,175 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 5446 transitions. Word has length 156 [2022-01-10 07:38:53,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:53,176 INFO L470 AbstractCegarLoop]: Abstraction has 3271 states and 5446 transitions. [2022-01-10 07:38:53,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:53,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 5446 transitions. [2022-01-10 07:38:53,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:53,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:53,177 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] [2022-01-10 07:38:53,187 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 07:38:53,385 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 07:38:53,385 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:53,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1048609774, now seen corresponding path program 1 times [2022-01-10 07:38:53,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:53,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008452108] [2022-01-10 07:38:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:53,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:53,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:53,387 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 07:38:53,389 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 07:38:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:53,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:53,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:53,775 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 07:38:53,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:53,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:53,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008452108] [2022-01-10 07:38:53,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008452108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:53,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:53,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:38:53,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788632754] [2022-01-10 07:38:53,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:53,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:53,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:53,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:53,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:53,777 INFO L87 Difference]: Start difference. First operand 3271 states and 5446 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:53,882 INFO L93 Difference]: Finished difference Result 4535 states and 7099 transitions. [2022-01-10 07:38:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:53,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:53,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:53,887 INFO L225 Difference]: With dead ends: 4535 [2022-01-10 07:38:53,887 INFO L226 Difference]: Without dead ends: 3404 [2022-01-10 07:38:53,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 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 07:38:53,890 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 362 mSDsluCounter, 13369 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 17779 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 07:38:53,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 17779 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2022-01-10 07:38:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3274. [2022-01-10 07:38:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3212 states have (on average 1.6721668742216687) internal successors, (5371), 3214 states have internal predecessors, (5371), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 07:38:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 5439 transitions. [2022-01-10 07:38:53,986 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 5439 transitions. Word has length 156 [2022-01-10 07:38:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:53,987 INFO L470 AbstractCegarLoop]: Abstraction has 3274 states and 5439 transitions. [2022-01-10 07:38:53,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:53,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 5439 transitions. [2022-01-10 07:38:53,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:53,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:53,988 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] [2022-01-10 07:38:54,013 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 07:38:54,195 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 07:38:54,195 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:54,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2079650672, now seen corresponding path program 1 times [2022-01-10 07:38:54,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:54,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565131685] [2022-01-10 07:38:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:54,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:54,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:54,197 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 07:38:54,199 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 07:38:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:54,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:54,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:54,509 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 07:38:54,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:54,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:54,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565131685] [2022-01-10 07:38:54,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565131685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:54,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:54,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:38:54,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967345101] [2022-01-10 07:38:54,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:54,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:54,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:54,512 INFO L87 Difference]: Start difference. First operand 3274 states and 5439 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:54,626 INFO L93 Difference]: Finished difference Result 4527 states and 7067 transitions. [2022-01-10 07:38:54,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:54,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:54,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:54,632 INFO L225 Difference]: With dead ends: 4527 [2022-01-10 07:38:54,632 INFO L226 Difference]: Without dead ends: 3393 [2022-01-10 07:38:54,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 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 07:38:54,635 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 323 mSDsluCounter, 13354 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 17764 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 07:38:54,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 17764 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2022-01-10 07:38:54,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3277. [2022-01-10 07:38:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 3215 states have (on average 1.6684292379471228) internal successors, (5364), 3217 states have internal predecessors, (5364), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 07:38:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 5432 transitions. [2022-01-10 07:38:54,719 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 5432 transitions. Word has length 156 [2022-01-10 07:38:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:54,719 INFO L470 AbstractCegarLoop]: Abstraction has 3277 states and 5432 transitions. [2022-01-10 07:38:54,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 5432 transitions. [2022-01-10 07:38:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:54,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:54,720 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] [2022-01-10 07:38:54,745 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 07:38:54,927 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 07:38:54,928 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1196141682, now seen corresponding path program 1 times [2022-01-10 07:38:54,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:54,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373122402] [2022-01-10 07:38:54,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:54,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:54,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:54,929 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 07:38:54,931 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 07:38:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:55,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:55,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:38:55,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:55,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:55,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373122402] [2022-01-10 07:38:55,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373122402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:55,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:55,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:38:55,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336017358] [2022-01-10 07:38:55,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:55,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:55,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:55,231 INFO L87 Difference]: Start difference. First operand 3277 states and 5432 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:55,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:55,340 INFO L93 Difference]: Finished difference Result 4519 states and 7035 transitions. [2022-01-10 07:38:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:55,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:55,347 INFO L225 Difference]: With dead ends: 4519 [2022-01-10 07:38:55,347 INFO L226 Difference]: Without dead ends: 3382 [2022-01-10 07:38:55,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 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 07:38:55,351 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 284 mSDsluCounter, 13339 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 17749 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 07:38:55,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 17749 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2022-01-10 07:38:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3280. [2022-01-10 07:38:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3280 states, 3218 states have (on average 1.6646985705407085) internal successors, (5357), 3220 states have internal predecessors, (5357), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 07:38:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3280 states to 3280 states and 5425 transitions. [2022-01-10 07:38:55,436 INFO L78 Accepts]: Start accepts. Automaton has 3280 states and 5425 transitions. Word has length 156 [2022-01-10 07:38:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:55,436 INFO L470 AbstractCegarLoop]: Abstraction has 3280 states and 5425 transitions. [2022-01-10 07:38:55,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3280 states and 5425 transitions. [2022-01-10 07:38:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:55,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:55,437 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] [2022-01-10 07:38:55,446 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 07:38:55,645 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 07:38:55,646 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:55,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:55,646 INFO L85 PathProgramCache]: Analyzing trace with hash 609865460, now seen corresponding path program 1 times [2022-01-10 07:38:55,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:55,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759065550] [2022-01-10 07:38:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:55,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:55,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:55,648 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 07:38:55,650 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 07:38:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:55,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:55,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:55,994 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 07:38:55,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:55,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:55,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759065550] [2022-01-10 07:38:55,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759065550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:55,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:55,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:38:55,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758379994] [2022-01-10 07:38:55,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:55,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:55,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:55,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:55,996 INFO L87 Difference]: Start difference. First operand 3280 states and 5425 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 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 07:38:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:56,137 INFO L93 Difference]: Finished difference Result 5462 states and 8188 transitions. [2022-01-10 07:38:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:56,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:56,148 INFO L225 Difference]: With dead ends: 5462 [2022-01-10 07:38:56,148 INFO L226 Difference]: Without dead ends: 4322 [2022-01-10 07:38:56,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 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 07:38:56,153 INFO L933 BasicCegarLoop]: 4476 mSDtfsCounter, 4323 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 4890 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 07:38:56,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4323 Valid, 4890 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4322 states. [2022-01-10 07:38:56,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4322 to 4318. [2022-01-10 07:38:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4204 states have (on average 1.5680304471931494) internal successors, (6592), 4206 states have internal predecessors, (6592), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:38:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 6716 transitions. [2022-01-10 07:38:56,333 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 6716 transitions. Word has length 156 [2022-01-10 07:38:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:56,333 INFO L470 AbstractCegarLoop]: Abstraction has 4318 states and 6716 transitions. [2022-01-10 07:38:56,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 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 07:38:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 6716 transitions. [2022-01-10 07:38:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:56,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:56,335 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] [2022-01-10 07:38:56,342 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 07:38:56,542 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 07:38:56,542 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash -327161739, now seen corresponding path program 1 times [2022-01-10 07:38:56,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:56,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606683458] [2022-01-10 07:38:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:56,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:56,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:56,544 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 07:38:56,545 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 07:38:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:56,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:56,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:56,836 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 07:38:56,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:56,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:56,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606683458] [2022-01-10 07:38:56,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606683458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:56,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:56,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:38:56,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166586091] [2022-01-10 07:38:56,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:56,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:56,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:56,838 INFO L87 Difference]: Start difference. First operand 4318 states and 6716 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:57,101 INFO L93 Difference]: Finished difference Result 7343 states and 10581 transitions. [2022-01-10 07:38:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:57,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:57,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:57,111 INFO L225 Difference]: With dead ends: 7343 [2022-01-10 07:38:57,111 INFO L226 Difference]: Without dead ends: 5165 [2022-01-10 07:38:57,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 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 07:38:57,115 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 209 mSDsluCounter, 13341 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 17757 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 07:38:57,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 17757 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2022-01-10 07:38:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4351. [2022-01-10 07:38:57,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4351 states, 4237 states have (on average 1.5612461647392022) internal successors, (6615), 4239 states have internal predecessors, (6615), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:38:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4351 states to 4351 states and 6739 transitions. [2022-01-10 07:38:57,294 INFO L78 Accepts]: Start accepts. Automaton has 4351 states and 6739 transitions. Word has length 156 [2022-01-10 07:38:57,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:57,294 INFO L470 AbstractCegarLoop]: Abstraction has 4351 states and 6739 transitions. [2022-01-10 07:38:57,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4351 states and 6739 transitions. [2022-01-10 07:38:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:57,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:57,295 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] [2022-01-10 07:38:57,302 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 07:38:57,502 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 07:38:57,503 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:57,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:57,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1406942711, now seen corresponding path program 1 times [2022-01-10 07:38:57,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:57,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351000399] [2022-01-10 07:38:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:57,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:57,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:57,520 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 07:38:57,521 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 07:38:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:57,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:57,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:57,819 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 07:38:57,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:57,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:57,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351000399] [2022-01-10 07:38:57,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351000399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:57,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:57,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:38:57,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40464913] [2022-01-10 07:38:57,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:57,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:57,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:57,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:57,820 INFO L87 Difference]: Start difference. First operand 4351 states and 6739 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:57,994 INFO L93 Difference]: Finished difference Result 6625 states and 9615 transitions. [2022-01-10 07:38:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:57,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:58,003 INFO L225 Difference]: With dead ends: 6625 [2022-01-10 07:38:58,003 INFO L226 Difference]: Without dead ends: 4414 [2022-01-10 07:38:58,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 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 07:38:58,009 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 166 mSDsluCounter, 13289 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 17699 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 07:38:58,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 17699 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2022-01-10 07:38:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 4354. [2022-01-10 07:38:58,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 4240 states have (on average 1.556132075471698) internal successors, (6598), 4242 states have internal predecessors, (6598), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:38:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6722 transitions. [2022-01-10 07:38:58,163 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6722 transitions. Word has length 156 [2022-01-10 07:38:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:58,163 INFO L470 AbstractCegarLoop]: Abstraction has 4354 states and 6722 transitions. [2022-01-10 07:38:58,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6722 transitions. [2022-01-10 07:38:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:58,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:58,164 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] [2022-01-10 07:38:58,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-01-10 07:38:58,371 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 07:38:58,372 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:58,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash 914316537, now seen corresponding path program 1 times [2022-01-10 07:38:58,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:58,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781436405] [2022-01-10 07:38:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:58,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:58,374 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 07:38:58,376 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 07:38:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:58,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:58,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:58,769 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 07:38:58,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:58,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:58,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781436405] [2022-01-10 07:38:58,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781436405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:58,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:58,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:38:58,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497881873] [2022-01-10 07:38:58,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:58,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:58,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:58,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:58,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:58,772 INFO L87 Difference]: Start difference. First operand 4354 states and 6722 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:59,023 INFO L93 Difference]: Finished difference Result 6666 states and 9625 transitions. [2022-01-10 07:38:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:59,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:59,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:59,032 INFO L225 Difference]: With dead ends: 6666 [2022-01-10 07:38:59,032 INFO L226 Difference]: Without dead ends: 4452 [2022-01-10 07:38:59,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 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 07:38:59,038 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 127 mSDsluCounter, 13274 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 17684 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 07:38:59,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 17684 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2022-01-10 07:38:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 4360. [2022-01-10 07:38:59,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 4246 states have (on average 1.5508714083843618) internal successors, (6585), 4248 states have internal predecessors, (6585), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:38:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 6709 transitions. [2022-01-10 07:38:59,260 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 6709 transitions. Word has length 156 [2022-01-10 07:38:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:59,260 INFO L470 AbstractCegarLoop]: Abstraction has 4360 states and 6709 transitions. [2022-01-10 07:38:59,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:59,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 6709 transitions. [2022-01-10 07:38:59,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:38:59,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:59,262 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] [2022-01-10 07:38:59,273 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 07:38:59,470 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 07:38:59,471 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:59,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:59,471 INFO L85 PathProgramCache]: Analyzing trace with hash 496919931, now seen corresponding path program 1 times [2022-01-10 07:38:59,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:59,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051652] [2022-01-10 07:38:59,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:59,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:59,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:59,473 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 07:38:59,474 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 07:38:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:59,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:59,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:59,755 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 07:38:59,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:59,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:59,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051652] [2022-01-10 07:38:59,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:59,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:59,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:38:59,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790823712] [2022-01-10 07:38:59,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:59,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:59,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:59,763 INFO L87 Difference]: Start difference. First operand 4360 states and 6709 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:38:59,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:59,939 INFO L93 Difference]: Finished difference Result 6650 states and 9563 transitions. [2022-01-10 07:38:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:59,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-01-10 07:38:59,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:59,947 INFO L225 Difference]: With dead ends: 6650 [2022-01-10 07:38:59,947 INFO L226 Difference]: Without dead ends: 4430 [2022-01-10 07:38:59,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 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 07:38:59,955 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 88 mSDsluCounter, 13259 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 17669 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 07:38:59,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 17669 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2022-01-10 07:39:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 4366. [2022-01-10 07:39:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4366 states, 4252 states have (on average 1.5456255879586076) internal successors, (6572), 4254 states have internal predecessors, (6572), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:39:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4366 states to 4366 states and 6696 transitions. [2022-01-10 07:39:00,304 INFO L78 Accepts]: Start accepts. Automaton has 4366 states and 6696 transitions. Word has length 156 [2022-01-10 07:39:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:39:00,305 INFO L470 AbstractCegarLoop]: Abstraction has 4366 states and 6696 transitions. [2022-01-10 07:39:00,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:39:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4366 states and 6696 transitions. [2022-01-10 07:39:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:39:00,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:39:00,320 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] [2022-01-10 07:39:00,330 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 07:39:00,530 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 07:39:00,531 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:39:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:39:00,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1757837181, now seen corresponding path program 1 times [2022-01-10 07:39:00,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:39:00,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347181560] [2022-01-10 07:39:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:39:00,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:39:00,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:39:00,533 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 07:39:00,534 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 07:39:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:39:00,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:39:00,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:39:00,857 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 07:39:00,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:39:00,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:39:00,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347181560] [2022-01-10 07:39:00,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347181560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:39:00,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:39:00,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:39:00,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68187823] [2022-01-10 07:39:00,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:39:00,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:39:00,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:39:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:39:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:39:00,859 INFO L87 Difference]: Start difference. First operand 4366 states and 6696 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:39:01,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:39:01,104 INFO L93 Difference]: Finished difference Result 6634 states and 9501 transitions. [2022-01-10 07:39:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:39:01,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-01-10 07:39:01,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:39:01,113 INFO L225 Difference]: With dead ends: 6634 [2022-01-10 07:39:01,113 INFO L226 Difference]: Without dead ends: 4408 [2022-01-10 07:39:01,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 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 07:39:01,119 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 49 mSDsluCounter, 13244 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 17654 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 07:39:01,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 17654 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:39:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2022-01-10 07:39:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4372. [2022-01-10 07:39:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 4258 states have (on average 1.5403945514325974) internal successors, (6559), 4260 states have internal predecessors, (6559), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:39:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 6683 transitions. [2022-01-10 07:39:01,340 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 6683 transitions. Word has length 156 [2022-01-10 07:39:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:39:01,341 INFO L470 AbstractCegarLoop]: Abstraction has 4372 states and 6683 transitions. [2022-01-10 07:39:01,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:39:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 6683 transitions. [2022-01-10 07:39:01,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:39:01,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:39:01,342 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] [2022-01-10 07:39:01,354 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 07:39:01,548 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 07:39:01,548 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:39:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:39:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash -270748929, now seen corresponding path program 1 times [2022-01-10 07:39:01,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:39:01,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671568705] [2022-01-10 07:39:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:39:01,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:39:01,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:39:01,550 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 07:39:01,552 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 07:39:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:39:01,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:39:01,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:39:01,846 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 07:39:01,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:39:01,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:39:01,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671568705] [2022-01-10 07:39:01,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671568705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:39:01,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:39:01,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:39:01,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023013342] [2022-01-10 07:39:01,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:39:01,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:39:01,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:39:01,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:39:01,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:39:01,848 INFO L87 Difference]: Start difference. First operand 4372 states and 6683 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:39:02,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:39:02,086 INFO L93 Difference]: Finished difference Result 6618 states and 9439 transitions. [2022-01-10 07:39:02,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:39:02,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-01-10 07:39:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:39:02,094 INFO L225 Difference]: With dead ends: 6618 [2022-01-10 07:39:02,094 INFO L226 Difference]: Without dead ends: 4386 [2022-01-10 07:39:02,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 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 07:39:02,100 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 10 mSDsluCounter, 13229 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17639 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 07:39:02,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 17639 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:39:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2022-01-10 07:39:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 4378. [2022-01-10 07:39:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4378 states, 4264 states have (on average 1.5351782363977486) internal successors, (6546), 4266 states have internal predecessors, (6546), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:39:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6670 transitions. [2022-01-10 07:39:02,284 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6670 transitions. Word has length 156 [2022-01-10 07:39:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:39:02,284 INFO L470 AbstractCegarLoop]: Abstraction has 4378 states and 6670 transitions. [2022-01-10 07:39:02,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 07:39:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6670 transitions. [2022-01-10 07:39:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:39:02,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:39:02,285 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] [2022-01-10 07:39:02,295 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 07:39:02,493 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 07:39:02,493 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:39:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:39:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash 622737409, now seen corresponding path program 1 times [2022-01-10 07:39:02,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:39:02,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475427610] [2022-01-10 07:39:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:39:02,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:39:02,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:39:02,495 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 07:39:02,497 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 07:39:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:39:02,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:39:02,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:39:02,835 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 07:39:02,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:39:02,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:39:02,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475427610] [2022-01-10 07:39:02,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475427610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:39:02,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:39:02,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:39:02,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285338763] [2022-01-10 07:39:02,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:39:02,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:39:02,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:39:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:39:02,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:39:02,837 INFO L87 Difference]: Start difference. First operand 4378 states and 6670 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:39:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:39:03,596 INFO L93 Difference]: Finished difference Result 8938 states and 12124 transitions. [2022-01-10 07:39:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:39:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 07:39:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:39:03,609 INFO L225 Difference]: With dead ends: 8938 [2022-01-10 07:39:03,609 INFO L226 Difference]: Without dead ends: 6699 [2022-01-10 07:39:03,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:39:03,615 INFO L933 BasicCegarLoop]: 4459 mSDtfsCounter, 4649 mSDsluCounter, 8760 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 13219 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:39:03,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4666 Valid, 13219 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:39:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6699 states. [2022-01-10 07:39:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6699 to 6651. [2022-01-10 07:39:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6651 states, 6429 states have (on average 1.4221496344688132) internal successors, (9143), 6433 states have internal predecessors, (9143), 118 states have call successors, (118), 100 states have call predecessors, (118), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2022-01-10 07:39:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6651 states to 6651 states and 9381 transitions. [2022-01-10 07:39:03,975 INFO L78 Accepts]: Start accepts. Automaton has 6651 states and 9381 transitions. Word has length 156 [2022-01-10 07:39:03,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:39:03,976 INFO L470 AbstractCegarLoop]: Abstraction has 6651 states and 9381 transitions. [2022-01-10 07:39:03,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:39:03,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6651 states and 9381 transitions. [2022-01-10 07:39:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:39:03,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:39:03,977 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] [2022-01-10 07:39:03,987 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 07:39:04,187 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 07:39:04,187 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:39:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:39:04,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1046384131, now seen corresponding path program 1 times [2022-01-10 07:39:04,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:39:04,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234345505] [2022-01-10 07:39:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:39:04,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:39:04,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:39:04,189 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 07:39:04,190 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 07:39:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:39:04,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:39:04,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:39:04,555 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 07:39:04,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:39:04,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:39:04,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234345505] [2022-01-10 07:39:04,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234345505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:39:04,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:39:04,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:39:04,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274417105] [2022-01-10 07:39:04,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:39:04,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:39:04,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:39:04,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:39:04,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:39:04,557 INFO L87 Difference]: Start difference. First operand 6651 states and 9381 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:39:05,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:39:05,110 INFO L93 Difference]: Finished difference Result 11163 states and 14786 transitions. [2022-01-10 07:39:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:39:05,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 07:39:05,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:39:05,122 INFO L225 Difference]: With dead ends: 11163 [2022-01-10 07:39:05,122 INFO L226 Difference]: Without dead ends: 6651 [2022-01-10 07:39:05,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 07:39:05,130 INFO L933 BasicCegarLoop]: 4383 mSDtfsCounter, 4455 mSDsluCounter, 8393 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 12776 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:39:05,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4472 Valid, 12776 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:39:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2022-01-10 07:39:05,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 6651. [2022-01-10 07:39:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6651 states, 6429 states have (on average 1.4199720018665423) internal successors, (9129), 6433 states have internal predecessors, (9129), 118 states have call successors, (118), 100 states have call predecessors, (118), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2022-01-10 07:39:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6651 states to 6651 states and 9367 transitions. [2022-01-10 07:39:05,445 INFO L78 Accepts]: Start accepts. Automaton has 6651 states and 9367 transitions. Word has length 156 [2022-01-10 07:39:05,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:39:05,445 INFO L470 AbstractCegarLoop]: Abstraction has 6651 states and 9367 transitions. [2022-01-10 07:39:05,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:39:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6651 states and 9367 transitions. [2022-01-10 07:39:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:39:05,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:39:05,446 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] [2022-01-10 07:39:05,454 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 07:39:05,654 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 07:39:05,654 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:39:05,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:39:05,655 INFO L85 PathProgramCache]: Analyzing trace with hash 973997573, now seen corresponding path program 1 times [2022-01-10 07:39:05,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:39:05,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804617789] [2022-01-10 07:39:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:39:05,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:39:05,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:39:05,656 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 07:39:05,657 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 07:39:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:39:05,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:39:05,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:39:06,024 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 07:39:06,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:39:06,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:39:06,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804617789] [2022-01-10 07:39:06,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804617789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:39:06,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:39:06,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:39:06,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771060908] [2022-01-10 07:39:06,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:39:06,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:39:06,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:39:06,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:39:06,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:39:06,026 INFO L87 Difference]: Start difference. First operand 6651 states and 9367 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:39:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:39:06,806 INFO L93 Difference]: Finished difference Result 11495 states and 15167 transitions. [2022-01-10 07:39:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:39:06,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 07:39:06,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:39:06,816 INFO L225 Difference]: With dead ends: 11495 [2022-01-10 07:39:06,816 INFO L226 Difference]: Without dead ends: 6983 [2022-01-10 07:39:06,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:39:06,820 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4574 mSDsluCounter, 8388 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4591 SdHoareTripleChecker+Valid, 12813 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:39:06,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4591 Valid, 12813 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:39:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6983 states. [2022-01-10 07:39:07,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6983 to 6905. [2022-01-10 07:39:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6905 states, 6679 states have (on average 1.403054349453511) internal successors, (9371), 6683 states have internal predecessors, (9371), 118 states have call successors, (118), 104 states have call predecessors, (118), 106 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2022-01-10 07:39:07,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 9609 transitions. [2022-01-10 07:39:07,146 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 9609 transitions. Word has length 156 [2022-01-10 07:39:07,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:39:07,146 INFO L470 AbstractCegarLoop]: Abstraction has 6905 states and 9609 transitions. [2022-01-10 07:39:07,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:39:07,146 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 9609 transitions. [2022-01-10 07:39:07,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 07:39:07,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:39:07,147 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] [2022-01-10 07:39:07,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 07:39:07,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:39:07,356 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:39:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:39:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1114546183, now seen corresponding path program 1 times [2022-01-10 07:39:07,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:39:07,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251919444] [2022-01-10 07:39:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:39:07,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:39:07,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:39:07,358 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:39:07,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 07:39:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:39:07,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:39:07,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:39:07,695 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 07:39:07,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:39:07,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:39:07,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251919444] [2022-01-10 07:39:07,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251919444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:39:07,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:39:07,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:39:07,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245439949] [2022-01-10 07:39:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:39:07,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:39:07,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:39:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:39:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:39:07,697 INFO L87 Difference]: Start difference. First operand 6905 states and 9609 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 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 07:39:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:39:08,369 INFO L93 Difference]: Finished difference Result 16362 states and 20849 transitions. [2022-01-10 07:39:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:39:08,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 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 156 [2022-01-10 07:39:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:39:08,389 INFO L225 Difference]: With dead ends: 16362 [2022-01-10 07:39:08,389 INFO L226 Difference]: Without dead ends: 11597 [2022-01-10 07:39:08,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 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 07:39:08,401 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4243 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 4833 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 07:39:08,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4243 Valid, 4833 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:39:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11597 states. [2022-01-10 07:39:09,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11597 to 11593. [2022-01-10 07:39:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11593 states, 11147 states have (on average 1.3112945187045841) internal successors, (14617), 11157 states have internal predecessors, (14617), 232 states have call successors, (232), 208 states have call predecessors, (232), 212 states have return successors, (236), 228 states have call predecessors, (236), 232 states have call successors, (236) [2022-01-10 07:39:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11593 states to 11593 states and 15085 transitions. [2022-01-10 07:39:09,184 INFO L78 Accepts]: Start accepts. Automaton has 11593 states and 15085 transitions. Word has length 156 [2022-01-10 07:39:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:39:09,185 INFO L470 AbstractCegarLoop]: Abstraction has 11593 states and 15085 transitions. [2022-01-10 07:39:09,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 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 07:39:09,185 INFO L276 IsEmpty]: Start isEmpty. Operand 11593 states and 15085 transitions. [2022-01-10 07:39:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-10 07:39:09,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:39:09,199 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:09,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 07:39:09,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:39:09,407 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:39:09,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:39:09,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1911728144, now seen corresponding path program 1 times [2022-01-10 07:39:09,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:39:09,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034567645] [2022-01-10 07:39:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:39:09,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:39:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:39:09,408 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:39:09,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 07:39:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:39:09,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:39:09,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:39:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 07:39:09,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:39:09,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:39:09,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034567645] [2022-01-10 07:39:09,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034567645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:39:09,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:39:09,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:39:09,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019954551] [2022-01-10 07:39:09,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:39:09,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:39:09,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:39:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:39:09,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:39:09,929 INFO L87 Difference]: Start difference. First operand 11593 states and 15085 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 07:39:11,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:39:11,563 INFO L93 Difference]: Finished difference Result 30226 states and 36935 transitions. [2022-01-10 07:39:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:39:11,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 254 [2022-01-10 07:39:11,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:39:11,599 INFO L225 Difference]: With dead ends: 30226 [2022-01-10 07:39:11,599 INFO L226 Difference]: Without dead ends: 20774 [2022-01-10 07:39:11,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 252 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 07:39:11,614 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 4539 mSDsluCounter, 4736 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4545 SdHoareTripleChecker+Valid, 9339 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:39:11,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4545 Valid, 9339 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:39:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20774 states. [2022-01-10 07:39:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20774 to 20772. [2022-01-10 07:39:12,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20772 states, 19899 states have (on average 1.2492587567214433) internal successors, (24859), 19926 states have internal predecessors, (24859), 447 states have call successors, (447), 400 states have call predecessors, (447), 424 states have return successors, (495), 447 states have call predecessors, (495), 447 states have call successors, (495) [2022-01-10 07:39:13,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20772 states to 20772 states and 25801 transitions. [2022-01-10 07:39:13,007 INFO L78 Accepts]: Start accepts. Automaton has 20772 states and 25801 transitions. Word has length 254 [2022-01-10 07:39:13,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:39:13,008 INFO L470 AbstractCegarLoop]: Abstraction has 20772 states and 25801 transitions. [2022-01-10 07:39:13,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 07:39:13,008 INFO L276 IsEmpty]: Start isEmpty. Operand 20772 states and 25801 transitions. [2022-01-10 07:39:13,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-10 07:39:13,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:39:13,017 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:13,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-01-10 07:39:13,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:39:13,227 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:39:13,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:39:13,227 INFO L85 PathProgramCache]: Analyzing trace with hash -90383598, now seen corresponding path program 1 times [2022-01-10 07:39:13,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:39:13,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629493809] [2022-01-10 07:39:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:39:13,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:39:13,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:39:13,229 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:39:13,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 07:39:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:39:13,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:39:13,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:39:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 07:39:13,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:39:13,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:39:13,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629493809] [2022-01-10 07:39:13,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629493809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:39:13,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:39:13,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:39:13,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475504810] [2022-01-10 07:39:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:39:13,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:39:13,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:39:13,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:39:13,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:39:13,662 INFO L87 Difference]: Start difference. First operand 20772 states and 25801 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:39:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:39:15,014 INFO L93 Difference]: Finished difference Result 39390 states and 47586 transitions. [2022-01-10 07:39:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:39:15,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 254 [2022-01-10 07:39:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:39:15,055 INFO L225 Difference]: With dead ends: 39390 [2022-01-10 07:39:15,055 INFO L226 Difference]: Without dead ends: 20759 [2022-01-10 07:39:15,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 252 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 07:39:15,081 INFO L933 BasicCegarLoop]: 4405 mSDtfsCounter, 440 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 8363 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 07:39:15,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 8363 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:39:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20759 states. [2022-01-10 07:39:16,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20759 to 20759. [2022-01-10 07:39:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20759 states, 19889 states have (on average 1.2489315702146915) internal successors, (24840), 19915 states have internal predecessors, (24840), 444 states have call successors, (444), 400 states have call predecessors, (444), 424 states have return successors, (492), 444 states have call predecessors, (492), 444 states have call successors, (492) [2022-01-10 07:39:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20759 states to 20759 states and 25776 transitions. [2022-01-10 07:39:16,612 INFO L78 Accepts]: Start accepts. Automaton has 20759 states and 25776 transitions. Word has length 254 [2022-01-10 07:39:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:39:16,612 INFO L470 AbstractCegarLoop]: Abstraction has 20759 states and 25776 transitions. [2022-01-10 07:39:16,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:39:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 20759 states and 25776 transitions. [2022-01-10 07:39:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-01-10 07:39:16,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:39:16,622 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:16,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 07:39:16,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:39:16,835 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:39:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:39:16,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1183729873, now seen corresponding path program 1 times [2022-01-10 07:39:16,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:39:16,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047037460] [2022-01-10 07:39:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:39:16,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:39:16,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:39:16,838 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:39:16,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 07:39:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:39:17,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:39:17,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:39:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 07:39:17,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:39:17,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:39:17,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047037460] [2022-01-10 07:39:17,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047037460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:39:17,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:39:17,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:39:17,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286559758] [2022-01-10 07:39:17,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:39:17,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:39:17,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:39:17,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:39:17,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:39:17,419 INFO L87 Difference]: Start difference. First operand 20759 states and 25776 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 07:39:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:39:20,473 INFO L93 Difference]: Finished difference Result 56931 states and 68088 transitions. [2022-01-10 07:39:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:39:20,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 255 [2022-01-10 07:39:20,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:39:20,543 INFO L225 Difference]: With dead ends: 56931 [2022-01-10 07:39:20,544 INFO L226 Difference]: Without dead ends: 38313 [2022-01-10 07:39:20,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 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 07:39:20,565 INFO L933 BasicCegarLoop]: 4586 mSDtfsCounter, 4534 mSDsluCounter, 4713 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4540 SdHoareTripleChecker+Valid, 9299 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:39:20,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4540 Valid, 9299 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:39:20,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38313 states. [2022-01-10 07:39:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38313 to 38311. [2022-01-10 07:39:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38311 states, 36622 states have (on average 1.2126044454153242) internal successors, (44408), 36681 states have internal predecessors, (44408), 855 states have call successors, (855), 768 states have call predecessors, (855), 832 states have return successors, (991), 863 states have call predecessors, (991), 855 states have call successors, (991) [2022-01-10 07:39:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38311 states to 38311 states and 46254 transitions. [2022-01-10 07:39:23,386 INFO L78 Accepts]: Start accepts. Automaton has 38311 states and 46254 transitions. Word has length 255 [2022-01-10 07:39:23,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:39:23,387 INFO L470 AbstractCegarLoop]: Abstraction has 38311 states and 46254 transitions. [2022-01-10 07:39:23,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 07:39:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 38311 states and 46254 transitions. [2022-01-10 07:39:23,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-01-10 07:39:23,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:39:23,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:23,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-01-10 07:39:23,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:39:23,610 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:39:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:39:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash -818381869, now seen corresponding path program 1 times [2022-01-10 07:39:23,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:39:23,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741878147] [2022-01-10 07:39:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:39:23,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:39:23,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:39:23,612 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:39:23,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 07:39:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:39:23,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:39:23,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:39:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 07:39:24,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:39:24,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:39:24,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741878147] [2022-01-10 07:39:24,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741878147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:39:24,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:39:24,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:39:24,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907534737] [2022-01-10 07:39:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:39:24,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:39:24,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:39:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:39:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:39:24,015 INFO L87 Difference]: Start difference. First operand 38311 states and 46254 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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)