/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_label46+token_ring.11.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:48:16,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:48:16,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:48:16,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:48:16,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:48:16,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:48:16,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:48:16,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:48:16,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:48:16,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:48:16,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:48:16,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:48:16,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:48:16,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:48:16,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:48:16,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:48:16,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:48:16,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:48:16,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:48:16,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:48:16,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:48:16,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:48:16,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:48:16,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:48:16,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:48:16,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:48:16,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:48:16,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:48:16,599 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 07:48:16,613 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:48:16,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:48:16,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:48:16,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:48:16,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:48:16,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:48:16,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:48:16,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:48:16,614 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:48:16,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:48:16,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:48:16,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:48:16,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:48:16,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:48:16,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:48:16,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:48:16,619 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:48:16,620 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:48:16,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:48:16,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:48:16,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:48:16,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:48:16,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:48:16,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:48:16,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:48:16,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:48:16,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:48:16,620 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:48:16,621 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:48:16,621 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:48:16,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:48:16,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:48:16,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:48:16,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:48:16,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:48:16,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:48:16,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:48:16,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:48:16,839 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:48:16,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.11.cil-2.c [2022-01-10 07:48:16,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefbbdc56/6e296356dfda4299a7c1fe4896ea5d39/FLAG7ffec733c [2022-01-10 07:48:17,600 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:48:17,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.11.cil-2.c [2022-01-10 07:48:17,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefbbdc56/6e296356dfda4299a7c1fe4896ea5d39/FLAG7ffec733c [2022-01-10 07:48:17,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefbbdc56/6e296356dfda4299a7c1fe4896ea5d39 [2022-01-10 07:48:17,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:48:17,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:48:17,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:48:17,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:48:17,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:48:17,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:48:17" (1/1) ... [2022-01-10 07:48:17,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1a8e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:17, skipping insertion in model container [2022-01-10 07:48:17,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:48:17" (1/1) ... [2022-01-10 07:48:17,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:48:18,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:48:19,615 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_label46+token_ring.11.cil-2.c[382357,382370] [2022-01-10 07:48:19,632 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_label46+token_ring.11.cil-2.c[383339,383352] [2022-01-10 07:48:19,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:48:19,864 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:48:20,506 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_label46+token_ring.11.cil-2.c[382357,382370] [2022-01-10 07:48:20,510 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_label46+token_ring.11.cil-2.c[383339,383352] [2022-01-10 07:48:20,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:48:20,583 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:48:20,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20 WrapperNode [2022-01-10 07:48:20,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:48:20,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:48:20,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:48:20,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:48:20,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (1/1) ... [2022-01-10 07:48:20,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (1/1) ... [2022-01-10 07:48:20,975 INFO L137 Inliner]: procedures = 67, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13101 [2022-01-10 07:48:20,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:48:20,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:48:20,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:48:20,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:48:20,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (1/1) ... [2022-01-10 07:48:20,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (1/1) ... [2022-01-10 07:48:21,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (1/1) ... [2022-01-10 07:48:21,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (1/1) ... [2022-01-10 07:48:21,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (1/1) ... [2022-01-10 07:48:21,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (1/1) ... [2022-01-10 07:48:21,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (1/1) ... [2022-01-10 07:48:21,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:48:21,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:48:21,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:48:21,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:48:21,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (1/1) ... [2022-01-10 07:48:21,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:48:21,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:48:21,429 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 07:48:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:48:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:48:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:48:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:48:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:48:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:48:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:48:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:48:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:48:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:48:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:48:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:48:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:48:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:48:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:48:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:48:21,447 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 07:48:21,611 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:48:21,618 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:48:28,170 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:48:28,194 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:48:28,194 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-01-10 07:48:28,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:48:28 BoogieIcfgContainer [2022-01-10 07:48:28,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:48:28,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:48:28,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:48:28,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:48:28,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:48:17" (1/3) ... [2022-01-10 07:48:28,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cdf447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:48:28, skipping insertion in model container [2022-01-10 07:48:28,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:20" (2/3) ... [2022-01-10 07:48:28,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cdf447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:48:28, skipping insertion in model container [2022-01-10 07:48:28,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:48:28" (3/3) ... [2022-01-10 07:48:28,204 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.11.cil-2.c [2022-01-10 07:48:28,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:48:28,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:48:28,259 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:48:28,263 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 07:48:28,263 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:48:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-10 07:48:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:28,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:28,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:28,317 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:28,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:28,321 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2022-01-10 07:48:28,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:28,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856575556] [2022-01-10 07:48:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:28,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:28,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:28,360 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 07:48:28,361 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 07:48:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:28,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:48:28,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:28,830 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 07:48:28,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:28,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:28,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856575556] [2022-01-10 07:48:28,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856575556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:28,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:28,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:48:28,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201891964] [2022-01-10 07:48:28,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:28,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:48:28,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:48:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:28,864 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 07:48:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:29,066 INFO L93 Difference]: Finished difference Result 5068 states and 9321 transitions. [2022-01-10 07:48:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:48:29,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:29,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:29,087 INFO L225 Difference]: With dead ends: 5068 [2022-01-10 07:48:29,087 INFO L226 Difference]: Without dead ends: 2473 [2022-01-10 07:48:29,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:29,097 INFO L933 BasicCegarLoop]: 4579 mSDtfsCounter, 544 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 8601 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 07:48:29,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 8601 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:29,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2022-01-10 07:48:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2022-01-10 07:48:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-10 07:48:29,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2022-01-10 07:48:29,201 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2022-01-10 07:48:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:29,202 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2022-01-10 07:48:29,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 07:48:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2022-01-10 07:48:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:29,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:29,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:29,218 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 07:48:29,416 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 07:48:29,416 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:29,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2022-01-10 07:48:29,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:29,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722787765] [2022-01-10 07:48:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:29,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:29,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:29,419 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 07:48:29,421 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 07:48:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:29,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:29,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:29,875 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 07:48:29,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:29,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:29,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722787765] [2022-01-10 07:48:29,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722787765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:29,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:29,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:29,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129094718] [2022-01-10 07:48:29,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:29,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:29,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:29,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:29,879 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 07:48:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:30,549 INFO L93 Difference]: Finished difference Result 3183 states and 5643 transitions. [2022-01-10 07:48:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:30,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:30,561 INFO L225 Difference]: With dead ends: 3183 [2022-01-10 07:48:30,561 INFO L226 Difference]: Without dead ends: 2850 [2022-01-10 07:48:30,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:30,568 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 5020 mSDsluCounter, 9013 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5039 SdHoareTripleChecker+Valid, 13570 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:30,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5039 Valid, 13570 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:48:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2022-01-10 07:48:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2823. [2022-01-10 07:48:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5067 transitions. [2022-01-10 07:48:30,641 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5067 transitions. Word has length 167 [2022-01-10 07:48:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:30,643 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5067 transitions. [2022-01-10 07:48:30,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 07:48:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5067 transitions. [2022-01-10 07:48:30,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:30,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:30,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:30,669 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 07:48:30,854 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 07:48:30,855 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:30,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:30,855 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2022-01-10 07:48:30,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:30,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734372740] [2022-01-10 07:48:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:30,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:30,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:30,857 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 07:48:30,858 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 07:48:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:31,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:31,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:31,253 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 07:48:31,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:31,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:31,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734372740] [2022-01-10 07:48:31,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734372740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:31,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:31,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:31,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473898977] [2022-01-10 07:48:31,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:31,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:31,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:31,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:31,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:31,255 INFO L87 Difference]: Start difference. First operand 2823 states and 5067 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:31,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:31,597 INFO L93 Difference]: Finished difference Result 3506 states and 6151 transitions. [2022-01-10 07:48:31,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:31,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:31,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:31,608 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:48:31,608 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:48:31,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:31,612 INFO L933 BasicCegarLoop]: 4480 mSDtfsCounter, 4707 mSDsluCounter, 8515 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4726 SdHoareTripleChecker+Valid, 12995 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:31,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4726 Valid, 12995 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:48:31,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:48:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7984075280492218) internal successors, (4969), 2766 states have internal predecessors, (4969), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5060 transitions. [2022-01-10 07:48:31,674 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5060 transitions. Word has length 167 [2022-01-10 07:48:31,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:31,674 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5060 transitions. [2022-01-10 07:48:31,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:31,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5060 transitions. [2022-01-10 07:48:31,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:31,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:31,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:31,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 07:48:31,884 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 07:48:31,885 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash -325872558, now seen corresponding path program 1 times [2022-01-10 07:48:31,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:31,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656461728] [2022-01-10 07:48:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:31,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:31,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:31,887 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 07:48:31,888 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 07:48:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:32,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:32,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:32,227 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 07:48:32,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:32,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:32,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656461728] [2022-01-10 07:48:32,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656461728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:32,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:32,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:32,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089250784] [2022-01-10 07:48:32,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:32,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:32,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:32,230 INFO L87 Difference]: Start difference. First operand 2823 states and 5060 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:32,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:32,588 INFO L93 Difference]: Finished difference Result 3506 states and 6137 transitions. [2022-01-10 07:48:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:32,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:32,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:32,599 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:48:32,599 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:48:32,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:32,605 INFO L933 BasicCegarLoop]: 4477 mSDtfsCounter, 4701 mSDsluCounter, 8511 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4720 SdHoareTripleChecker+Valid, 12988 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:32,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4720 Valid, 12988 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:48:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:48:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.795874049945711) internal successors, (4962), 2766 states have internal predecessors, (4962), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5053 transitions. [2022-01-10 07:48:32,668 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5053 transitions. Word has length 167 [2022-01-10 07:48:32,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:32,669 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5053 transitions. [2022-01-10 07:48:32,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:32,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5053 transitions. [2022-01-10 07:48:32,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:32,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:32,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:32,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 07:48:32,879 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 07:48:32,880 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash 524328662, now seen corresponding path program 1 times [2022-01-10 07:48:32,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:32,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020369751] [2022-01-10 07:48:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:32,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:32,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:32,889 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 07:48:32,891 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 07:48:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:33,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:33,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:33,273 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 07:48:33,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:33,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:33,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020369751] [2022-01-10 07:48:33,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020369751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:33,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:33,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:33,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450146436] [2022-01-10 07:48:33,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:33,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:33,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:33,275 INFO L87 Difference]: Start difference. First operand 2823 states and 5053 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:33,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:33,706 INFO L93 Difference]: Finished difference Result 3506 states and 6123 transitions. [2022-01-10 07:48:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:33,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:33,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:33,718 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:48:33,718 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:48:33,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:33,720 INFO L933 BasicCegarLoop]: 4474 mSDtfsCounter, 4695 mSDsluCounter, 8507 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4714 SdHoareTripleChecker+Valid, 12981 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:33,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4714 Valid, 12981 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:48:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:48:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7933405718422004) internal successors, (4955), 2766 states have internal predecessors, (4955), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5046 transitions. [2022-01-10 07:48:33,775 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5046 transitions. Word has length 167 [2022-01-10 07:48:33,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:33,775 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5046 transitions. [2022-01-10 07:48:33,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5046 transitions. [2022-01-10 07:48:33,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:33,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:33,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:33,787 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 07:48:33,987 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 07:48:33,988 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:33,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1387908142, now seen corresponding path program 1 times [2022-01-10 07:48:33,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:33,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881054337] [2022-01-10 07:48:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:33,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:33,990 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 07:48:34,007 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 07:48:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:34,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:34,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:34,304 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 07:48:34,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:34,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881054337] [2022-01-10 07:48:34,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881054337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:34,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:34,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:34,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325701023] [2022-01-10 07:48:34,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:34,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:34,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:34,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:34,306 INFO L87 Difference]: Start difference. First operand 2823 states and 5046 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:34,646 INFO L93 Difference]: Finished difference Result 3506 states and 6109 transitions. [2022-01-10 07:48:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:34,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:34,655 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:48:34,657 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:48:34,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:34,660 INFO L933 BasicCegarLoop]: 4471 mSDtfsCounter, 4689 mSDsluCounter, 8503 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 12974 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:34,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4708 Valid, 12974 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:34,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:48:34,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:48:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7908070937386897) internal successors, (4948), 2766 states have internal predecessors, (4948), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5039 transitions. [2022-01-10 07:48:34,712 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5039 transitions. Word has length 167 [2022-01-10 07:48:34,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:34,712 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5039 transitions. [2022-01-10 07:48:34,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:34,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5039 transitions. [2022-01-10 07:48:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:34,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:34,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:34,724 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 07:48:34,922 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 07:48:34,923 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:34,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:34,923 INFO L85 PathProgramCache]: Analyzing trace with hash 905711446, now seen corresponding path program 1 times [2022-01-10 07:48:34,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:34,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965124159] [2022-01-10 07:48:34,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:34,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:34,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:34,925 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 07:48:34,926 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 07:48:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:35,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:35,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:35,289 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 07:48:35,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:35,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:35,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965124159] [2022-01-10 07:48:35,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965124159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:35,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:35,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:35,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139603021] [2022-01-10 07:48:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:35,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:35,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:35,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:35,292 INFO L87 Difference]: Start difference. First operand 2823 states and 5039 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:35,649 INFO L93 Difference]: Finished difference Result 3506 states and 6095 transitions. [2022-01-10 07:48:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:35,660 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:48:35,660 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:48:35,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:35,663 INFO L933 BasicCegarLoop]: 4468 mSDtfsCounter, 4683 mSDsluCounter, 8499 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 12967 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:35,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4702 Valid, 12967 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:48:35,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:48:35,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.788273615635179) internal successors, (4941), 2766 states have internal predecessors, (4941), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5032 transitions. [2022-01-10 07:48:35,718 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5032 transitions. Word has length 167 [2022-01-10 07:48:35,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:35,718 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5032 transitions. [2022-01-10 07:48:35,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5032 transitions. [2022-01-10 07:48:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:35,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:35,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:35,745 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 07:48:35,930 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 07:48:35,932 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:35,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:35,933 INFO L85 PathProgramCache]: Analyzing trace with hash 286962514, now seen corresponding path program 1 times [2022-01-10 07:48:35,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:35,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783142538] [2022-01-10 07:48:35,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:35,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:35,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:35,934 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 07:48:35,936 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 07:48:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:36,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:36,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:36,261 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 07:48:36,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:36,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:36,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783142538] [2022-01-10 07:48:36,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783142538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:36,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:36,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:36,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810393334] [2022-01-10 07:48:36,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:36,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:36,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:36,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:36,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:36,274 INFO L87 Difference]: Start difference. First operand 2823 states and 5032 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:36,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:36,596 INFO L93 Difference]: Finished difference Result 3506 states and 6081 transitions. [2022-01-10 07:48:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:36,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:36,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:36,612 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:48:36,612 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:48:36,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:36,615 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 4676 mSDsluCounter, 8495 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 12960 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:36,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4695 Valid, 12960 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:48:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:48:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7857401375316684) internal successors, (4934), 2766 states have internal predecessors, (4934), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5025 transitions. [2022-01-10 07:48:36,676 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5025 transitions. Word has length 167 [2022-01-10 07:48:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:36,676 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5025 transitions. [2022-01-10 07:48:36,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5025 transitions. [2022-01-10 07:48:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:36,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:36,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:36,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:36,887 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 07:48:36,888 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:36,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2051679822, now seen corresponding path program 1 times [2022-01-10 07:48:36,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:36,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939568371] [2022-01-10 07:48:36,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:36,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:36,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:36,890 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 07:48:36,892 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 07:48:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:37,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:37,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:37,227 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 07:48:37,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:37,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:37,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939568371] [2022-01-10 07:48:37,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939568371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:37,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:37,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:37,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240026248] [2022-01-10 07:48:37,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:37,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:37,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:37,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:37,229 INFO L87 Difference]: Start difference. First operand 2823 states and 5025 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:37,554 INFO L93 Difference]: Finished difference Result 3506 states and 6067 transitions. [2022-01-10 07:48:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:37,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:37,563 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:48:37,564 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:48:37,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:37,566 INFO L933 BasicCegarLoop]: 4462 mSDtfsCounter, 4670 mSDsluCounter, 8491 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4689 SdHoareTripleChecker+Valid, 12953 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:37,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4689 Valid, 12953 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:48:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:48:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7832066594281577) internal successors, (4927), 2766 states have internal predecessors, (4927), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5018 transitions. [2022-01-10 07:48:37,611 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5018 transitions. Word has length 167 [2022-01-10 07:48:37,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:37,611 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5018 transitions. [2022-01-10 07:48:37,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:37,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5018 transitions. [2022-01-10 07:48:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:37,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:37,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:37,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:37,823 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 07:48:37,824 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1277322194, now seen corresponding path program 1 times [2022-01-10 07:48:37,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:37,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021214194] [2022-01-10 07:48:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:37,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:37,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:37,826 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 07:48:37,829 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 07:48:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:37,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:37,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:38,179 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 07:48:38,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:38,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:38,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021214194] [2022-01-10 07:48:38,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021214194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:38,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:38,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:38,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032555566] [2022-01-10 07:48:38,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:38,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:38,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:38,181 INFO L87 Difference]: Start difference. First operand 2823 states and 5018 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:38,493 INFO L93 Difference]: Finished difference Result 3506 states and 6053 transitions. [2022-01-10 07:48:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:38,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:38,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:38,510 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:48:38,510 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:48:38,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:38,514 INFO L933 BasicCegarLoop]: 4459 mSDtfsCounter, 4664 mSDsluCounter, 8487 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 12946 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:38,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4683 Valid, 12946 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:48:38,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:48:38,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.780673181324647) internal successors, (4920), 2766 states have internal predecessors, (4920), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5011 transitions. [2022-01-10 07:48:38,564 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5011 transitions. Word has length 167 [2022-01-10 07:48:38,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:38,564 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5011 transitions. [2022-01-10 07:48:38,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:38,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5011 transitions. [2022-01-10 07:48:38,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:38,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:38,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:38,586 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 07:48:38,773 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 07:48:38,774 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash -548772402, now seen corresponding path program 1 times [2022-01-10 07:48:38,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:38,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778866170] [2022-01-10 07:48:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:38,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:38,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:38,776 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 07:48:38,776 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 07:48:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:38,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:38,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:39,090 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 07:48:39,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:39,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:39,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778866170] [2022-01-10 07:48:39,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778866170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:39,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:39,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:39,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447341958] [2022-01-10 07:48:39,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:39,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:39,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:39,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:39,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:39,092 INFO L87 Difference]: Start difference. First operand 2823 states and 5011 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:39,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:39,434 INFO L93 Difference]: Finished difference Result 3506 states and 6039 transitions. [2022-01-10 07:48:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:39,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:39,439 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:48:39,440 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:48:39,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:39,442 INFO L933 BasicCegarLoop]: 4456 mSDtfsCounter, 4658 mSDsluCounter, 8483 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 12939 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:39,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4677 Valid, 12939 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:48:39,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:48:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7781397032211363) internal successors, (4913), 2766 states have internal predecessors, (4913), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5004 transitions. [2022-01-10 07:48:39,485 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5004 transitions. Word has length 167 [2022-01-10 07:48:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:39,485 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5004 transitions. [2022-01-10 07:48:39,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5004 transitions. [2022-01-10 07:48:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:39,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:39,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:39,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:39,694 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 07:48:39,695 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash 777794642, now seen corresponding path program 1 times [2022-01-10 07:48:39,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:39,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258262623] [2022-01-10 07:48:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:39,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:39,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:39,697 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 07:48:39,698 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 07:48:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:39,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:39,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:40,020 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 07:48:40,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:40,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:40,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258262623] [2022-01-10 07:48:40,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258262623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:40,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:40,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:40,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073658451] [2022-01-10 07:48:40,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:40,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:40,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:40,022 INFO L87 Difference]: Start difference. First operand 2823 states and 5004 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:40,356 INFO L93 Difference]: Finished difference Result 3506 states and 6025 transitions. [2022-01-10 07:48:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:40,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:40,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:40,362 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:48:40,362 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:48:40,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:40,365 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 4652 mSDsluCounter, 8479 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4671 SdHoareTripleChecker+Valid, 12932 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:40,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4671 Valid, 12932 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:40,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:48:40,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:48:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7756062251176257) internal successors, (4906), 2766 states have internal predecessors, (4906), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:48:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 4997 transitions. [2022-01-10 07:48:40,411 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 4997 transitions. Word has length 167 [2022-01-10 07:48:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:40,411 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 4997 transitions. [2022-01-10 07:48:40,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 4997 transitions. [2022-01-10 07:48:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:40,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:40,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:40,425 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 07:48:40,620 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 07:48:40,621 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:40,621 INFO L85 PathProgramCache]: Analyzing trace with hash -564886194, now seen corresponding path program 1 times [2022-01-10 07:48:40,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:40,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468035133] [2022-01-10 07:48:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:40,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:40,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:40,622 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 07:48:40,624 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 07:48:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:40,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:40,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:40,941 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 07:48:40,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:40,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:40,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468035133] [2022-01-10 07:48:40,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468035133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:40,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:40,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:40,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370180346] [2022-01-10 07:48:40,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:40,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:40,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:40,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:40,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:40,942 INFO L87 Difference]: Start difference. First operand 2823 states and 4997 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:41,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:41,369 INFO L93 Difference]: Finished difference Result 3684 states and 6287 transitions. [2022-01-10 07:48:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:41,374 INFO L225 Difference]: With dead ends: 3684 [2022-01-10 07:48:41,375 INFO L226 Difference]: Without dead ends: 3001 [2022-01-10 07:48:41,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:41,377 INFO L933 BasicCegarLoop]: 4450 mSDtfsCounter, 4762 mSDsluCounter, 8474 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 12924 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:41,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4781 Valid, 12924 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:41,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2022-01-10 07:48:41,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 3001. [2022-01-10 07:48:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2935 states have (on average 1.751618398637138) internal successors, (5141), 2938 states have internal predecessors, (5141), 47 states have call successors, (47), 16 states have call predecessors, (47), 17 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:48:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 5236 transitions. [2022-01-10 07:48:41,431 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 5236 transitions. Word has length 167 [2022-01-10 07:48:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:41,432 INFO L470 AbstractCegarLoop]: Abstraction has 3001 states and 5236 transitions. [2022-01-10 07:48:41,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 5236 transitions. [2022-01-10 07:48:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:41,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:41,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:41,451 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 07:48:41,640 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 07:48:41,641 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:41,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:41,641 INFO L85 PathProgramCache]: Analyzing trace with hash -82307693, now seen corresponding path program 1 times [2022-01-10 07:48:41,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:41,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705673918] [2022-01-10 07:48:41,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:41,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:41,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:41,643 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 07:48:41,643 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 07:48:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:41,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:41,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:41,957 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 07:48:41,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:41,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:41,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705673918] [2022-01-10 07:48:41,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705673918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:41,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:41,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:41,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142159150] [2022-01-10 07:48:41,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:41,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:41,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:41,959 INFO L87 Difference]: Start difference. First operand 3001 states and 5236 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:42,394 INFO L93 Difference]: Finished difference Result 4040 states and 6765 transitions. [2022-01-10 07:48:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:42,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:42,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:42,402 INFO L225 Difference]: With dead ends: 4040 [2022-01-10 07:48:42,402 INFO L226 Difference]: Without dead ends: 3179 [2022-01-10 07:48:42,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:42,405 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 4755 mSDsluCounter, 8470 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4774 SdHoareTripleChecker+Valid, 12918 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:42,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4774 Valid, 12918 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-01-10 07:48:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3179. [2022-01-10 07:48:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 3107 states have (on average 1.728999034438365) internal successors, (5372), 3110 states have internal predecessors, (5372), 49 states have call successors, (49), 20 states have call predecessors, (49), 21 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:42,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5471 transitions. [2022-01-10 07:48:42,461 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5471 transitions. Word has length 167 [2022-01-10 07:48:42,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:42,462 INFO L470 AbstractCegarLoop]: Abstraction has 3179 states and 5471 transitions. [2022-01-10 07:48:42,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:42,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5471 transitions. [2022-01-10 07:48:42,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:42,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:42,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:42,479 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 07:48:42,670 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 07:48:42,670 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:42,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:42,671 INFO L85 PathProgramCache]: Analyzing trace with hash 229143951, now seen corresponding path program 1 times [2022-01-10 07:48:42,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:42,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960377774] [2022-01-10 07:48:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:42,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:42,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:42,676 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 07:48:42,677 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 07:48:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:42,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:42,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:43,011 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 07:48:43,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:43,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:43,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960377774] [2022-01-10 07:48:43,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960377774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:43,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:43,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:43,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243876716] [2022-01-10 07:48:43,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:43,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:43,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:43,013 INFO L87 Difference]: Start difference. First operand 3179 states and 5471 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:43,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:43,433 INFO L93 Difference]: Finished difference Result 4396 states and 7235 transitions. [2022-01-10 07:48:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:43,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:43,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:43,439 INFO L225 Difference]: With dead ends: 4396 [2022-01-10 07:48:43,440 INFO L226 Difference]: Without dead ends: 3357 [2022-01-10 07:48:43,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:43,443 INFO L933 BasicCegarLoop]: 4443 mSDtfsCounter, 4748 mSDsluCounter, 8466 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4767 SdHoareTripleChecker+Valid, 12909 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:43,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4767 Valid, 12909 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2022-01-10 07:48:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3357. [2022-01-10 07:48:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3357 states, 3279 states have (on average 1.7075327843854833) internal successors, (5599), 3282 states have internal predecessors, (5599), 51 states have call successors, (51), 24 states have call predecessors, (51), 25 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:48:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 5702 transitions. [2022-01-10 07:48:43,520 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 5702 transitions. Word has length 167 [2022-01-10 07:48:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:43,520 INFO L470 AbstractCegarLoop]: Abstraction has 3357 states and 5702 transitions. [2022-01-10 07:48:43,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 5702 transitions. [2022-01-10 07:48:43,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:43,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:43,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:43,590 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 07:48:43,781 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 07:48:43,782 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:43,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1715735668, now seen corresponding path program 1 times [2022-01-10 07:48:43,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:43,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587120167] [2022-01-10 07:48:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:43,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:43,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:43,800 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 07:48:43,801 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 07:48:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:43,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:43,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:44,142 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 07:48:44,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:44,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:44,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587120167] [2022-01-10 07:48:44,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587120167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:44,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:44,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:44,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794480431] [2022-01-10 07:48:44,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:44,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:44,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:44,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:44,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:44,144 INFO L87 Difference]: Start difference. First operand 3357 states and 5702 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:44,568 INFO L93 Difference]: Finished difference Result 4752 states and 7697 transitions. [2022-01-10 07:48:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:44,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:44,574 INFO L225 Difference]: With dead ends: 4752 [2022-01-10 07:48:44,575 INFO L226 Difference]: Without dead ends: 3535 [2022-01-10 07:48:44,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:44,578 INFO L933 BasicCegarLoop]: 4440 mSDtfsCounter, 4741 mSDsluCounter, 8462 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 12902 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:44,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4760 Valid, 12902 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:44,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2022-01-10 07:48:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2022-01-10 07:48:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3451 states have (on average 1.6870472326861778) internal successors, (5822), 3454 states have internal predecessors, (5822), 53 states have call successors, (53), 28 states have call predecessors, (53), 29 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 07:48:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5929 transitions. [2022-01-10 07:48:44,650 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5929 transitions. Word has length 167 [2022-01-10 07:48:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:44,651 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 5929 transitions. [2022-01-10 07:48:44,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5929 transitions. [2022-01-10 07:48:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:44,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:44,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:44,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 07:48:44,859 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 07:48:44,860 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:44,860 INFO L85 PathProgramCache]: Analyzing trace with hash -740559600, now seen corresponding path program 1 times [2022-01-10 07:48:44,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:44,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822383863] [2022-01-10 07:48:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:44,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:44,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:44,862 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 07:48:44,862 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 07:48:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:44,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:44,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:45,215 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 07:48:45,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:45,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:45,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822383863] [2022-01-10 07:48:45,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822383863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:45,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:45,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:45,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353275350] [2022-01-10 07:48:45,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:45,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:45,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:45,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:45,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:45,217 INFO L87 Difference]: Start difference. First operand 3535 states and 5929 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:45,660 INFO L93 Difference]: Finished difference Result 5108 states and 8151 transitions. [2022-01-10 07:48:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:45,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:45,668 INFO L225 Difference]: With dead ends: 5108 [2022-01-10 07:48:45,668 INFO L226 Difference]: Without dead ends: 3713 [2022-01-10 07:48:45,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:45,673 INFO L933 BasicCegarLoop]: 4437 mSDtfsCounter, 4734 mSDsluCounter, 8458 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4753 SdHoareTripleChecker+Valid, 12895 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:45,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4753 Valid, 12895 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-01-10 07:48:45,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3713. [2022-01-10 07:48:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3623 states have (on average 1.667402704940657) internal successors, (6041), 3626 states have internal predecessors, (6041), 55 states have call successors, (55), 32 states have call predecessors, (55), 33 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 07:48:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 6152 transitions. [2022-01-10 07:48:45,754 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 6152 transitions. Word has length 167 [2022-01-10 07:48:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:45,755 INFO L470 AbstractCegarLoop]: Abstraction has 3713 states and 6152 transitions. [2022-01-10 07:48:45,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 6152 transitions. [2022-01-10 07:48:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:45,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:45,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:45,770 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 07:48:45,963 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 07:48:45,964 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:45,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1546435469, now seen corresponding path program 1 times [2022-01-10 07:48:45,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:45,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88054743] [2022-01-10 07:48:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:45,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:45,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:45,966 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 07:48:45,967 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 07:48:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:46,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:46,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:46,293 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 07:48:46,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:46,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:46,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88054743] [2022-01-10 07:48:46,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88054743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:46,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:46,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:46,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912958920] [2022-01-10 07:48:46,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:46,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:46,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:46,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:46,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:46,297 INFO L87 Difference]: Start difference. First operand 3713 states and 6152 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:46,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:46,769 INFO L93 Difference]: Finished difference Result 5464 states and 8597 transitions. [2022-01-10 07:48:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:46,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:46,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:46,775 INFO L225 Difference]: With dead ends: 5464 [2022-01-10 07:48:46,776 INFO L226 Difference]: Without dead ends: 3891 [2022-01-10 07:48:46,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:46,779 INFO L933 BasicCegarLoop]: 4434 mSDtfsCounter, 4727 mSDsluCounter, 8454 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 12888 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:46,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4746 Valid, 12888 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2022-01-10 07:48:46,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3891. [2022-01-10 07:48:46,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3891 states, 3795 states have (on average 1.6484848484848484) internal successors, (6256), 3798 states have internal predecessors, (6256), 57 states have call successors, (57), 36 states have call predecessors, (57), 37 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 07:48:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3891 states to 3891 states and 6371 transitions. [2022-01-10 07:48:46,889 INFO L78 Accepts]: Start accepts. Automaton has 3891 states and 6371 transitions. Word has length 167 [2022-01-10 07:48:46,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:46,889 INFO L470 AbstractCegarLoop]: Abstraction has 3891 states and 6371 transitions. [2022-01-10 07:48:46,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3891 states and 6371 transitions. [2022-01-10 07:48:46,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:46,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:46,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:46,911 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 07:48:47,111 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 07:48:47,112 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:47,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1252478481, now seen corresponding path program 1 times [2022-01-10 07:48:47,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:47,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804839848] [2022-01-10 07:48:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:47,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:47,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:47,114 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 07:48:47,147 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 07:48:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:47,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:47,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:47,496 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 07:48:47,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:47,496 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:47,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804839848] [2022-01-10 07:48:47,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804839848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:47,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:47,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:47,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020178299] [2022-01-10 07:48:47,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:47,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:47,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:47,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:47,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:47,498 INFO L87 Difference]: Start difference. First operand 3891 states and 6371 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:47,953 INFO L93 Difference]: Finished difference Result 5820 states and 9035 transitions. [2022-01-10 07:48:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:47,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:47,960 INFO L225 Difference]: With dead ends: 5820 [2022-01-10 07:48:47,960 INFO L226 Difference]: Without dead ends: 4069 [2022-01-10 07:48:47,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:47,964 INFO L933 BasicCegarLoop]: 4431 mSDtfsCounter, 4720 mSDsluCounter, 8450 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 12881 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:47,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4739 Valid, 12881 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:47,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4069 states. [2022-01-10 07:48:48,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4069 to 4069. [2022-01-10 07:48:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 3967 states have (on average 1.6301991429291656) internal successors, (6467), 3970 states have internal predecessors, (6467), 59 states have call successors, (59), 40 states have call predecessors, (59), 41 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 07:48:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 6586 transitions. [2022-01-10 07:48:48,068 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 6586 transitions. Word has length 167 [2022-01-10 07:48:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:48,068 INFO L470 AbstractCegarLoop]: Abstraction has 4069 states and 6586 transitions. [2022-01-10 07:48:48,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 6586 transitions. [2022-01-10 07:48:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:48,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:48,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:48,087 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 07:48:48,277 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 07:48:48,278 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:48,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:48,278 INFO L85 PathProgramCache]: Analyzing trace with hash 829906190, now seen corresponding path program 1 times [2022-01-10 07:48:48,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:48,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172391999] [2022-01-10 07:48:48,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:48,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:48,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:48,280 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 07:48:48,281 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 07:48:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:48,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:48,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:48,593 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 07:48:48,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:48,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:48,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172391999] [2022-01-10 07:48:48,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172391999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:48,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:48,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:48,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237508042] [2022-01-10 07:48:48,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:48,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:48,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:48,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:48,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:48,594 INFO L87 Difference]: Start difference. First operand 4069 states and 6586 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:49,071 INFO L93 Difference]: Finished difference Result 6176 states and 9465 transitions. [2022-01-10 07:48:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:49,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:49,078 INFO L225 Difference]: With dead ends: 6176 [2022-01-10 07:48:49,078 INFO L226 Difference]: Without dead ends: 4247 [2022-01-10 07:48:49,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:49,082 INFO L933 BasicCegarLoop]: 4428 mSDtfsCounter, 4713 mSDsluCounter, 8446 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4732 SdHoareTripleChecker+Valid, 12874 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:49,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4732 Valid, 12874 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2022-01-10 07:48:49,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 4247. [2022-01-10 07:48:49,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 4139 states have (on average 1.6124667794153178) internal successors, (6674), 4142 states have internal predecessors, (6674), 61 states have call successors, (61), 44 states have call predecessors, (61), 45 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 07:48:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 6797 transitions. [2022-01-10 07:48:49,181 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 6797 transitions. Word has length 167 [2022-01-10 07:48:49,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:49,181 INFO L470 AbstractCegarLoop]: Abstraction has 4247 states and 6797 transitions. [2022-01-10 07:48:49,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 6797 transitions. [2022-01-10 07:48:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:49,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:49,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:49,201 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 07:48:49,391 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 07:48:49,391 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:49,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1682128750, now seen corresponding path program 1 times [2022-01-10 07:48:49,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:49,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315068516] [2022-01-10 07:48:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:49,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:49,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:49,393 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 07:48:49,394 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 07:48:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:49,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:49,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:49,716 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 07:48:49,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:49,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:49,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315068516] [2022-01-10 07:48:49,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315068516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:49,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:49,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:49,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833190942] [2022-01-10 07:48:49,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:49,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:49,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:49,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:49,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:49,718 INFO L87 Difference]: Start difference. First operand 4247 states and 6797 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:50,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:50,258 INFO L93 Difference]: Finished difference Result 6532 states and 9887 transitions. [2022-01-10 07:48:50,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:50,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:50,263 INFO L225 Difference]: With dead ends: 6532 [2022-01-10 07:48:50,263 INFO L226 Difference]: Without dead ends: 4425 [2022-01-10 07:48:50,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:50,266 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4706 mSDsluCounter, 8442 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4725 SdHoareTripleChecker+Valid, 12867 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:50,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4725 Valid, 12867 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2022-01-10 07:48:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4425. [2022-01-10 07:48:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4425 states, 4311 states have (on average 1.595221526327998) internal successors, (6877), 4314 states have internal predecessors, (6877), 63 states have call successors, (63), 48 states have call predecessors, (63), 49 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2022-01-10 07:48:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 7004 transitions. [2022-01-10 07:48:50,374 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 7004 transitions. Word has length 167 [2022-01-10 07:48:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:50,375 INFO L470 AbstractCegarLoop]: Abstraction has 4425 states and 7004 transitions. [2022-01-10 07:48:50,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 7004 transitions. [2022-01-10 07:48:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:50,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:50,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:50,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 07:48:50,584 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 07:48:50,584 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash 60692495, now seen corresponding path program 1 times [2022-01-10 07:48:50,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:50,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25416995] [2022-01-10 07:48:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:50,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:50,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:50,586 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 07:48:50,588 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 07:48:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:50,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:50,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:50,925 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 07:48:50,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:50,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:50,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25416995] [2022-01-10 07:48:50,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25416995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:50,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:50,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:50,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424451998] [2022-01-10 07:48:50,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:50,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:50,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:50,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:50,927 INFO L87 Difference]: Start difference. First operand 4425 states and 7004 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:51,398 INFO L93 Difference]: Finished difference Result 6888 states and 10301 transitions. [2022-01-10 07:48:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:51,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:51,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:51,407 INFO L225 Difference]: With dead ends: 6888 [2022-01-10 07:48:51,407 INFO L226 Difference]: Without dead ends: 4603 [2022-01-10 07:48:51,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:48:51,412 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 4698 mSDsluCounter, 8438 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 12860 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:51,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 12860 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:51,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4603 states. [2022-01-10 07:48:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4603 to 4603. [2022-01-10 07:48:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4483 states have (on average 1.57840731652911) internal successors, (7076), 4486 states have internal predecessors, (7076), 65 states have call successors, (65), 52 states have call predecessors, (65), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:48:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 7207 transitions. [2022-01-10 07:48:51,542 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 7207 transitions. Word has length 167 [2022-01-10 07:48:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:51,542 INFO L470 AbstractCegarLoop]: Abstraction has 4603 states and 7207 transitions. [2022-01-10 07:48:51,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:48:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 7207 transitions. [2022-01-10 07:48:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:51,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:51,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:51,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 07:48:51,751 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 07:48:51,752 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash -613238772, now seen corresponding path program 1 times [2022-01-10 07:48:51,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:51,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587720479] [2022-01-10 07:48:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:51,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:51,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:51,754 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 07:48:51,755 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 07:48:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:51,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:51,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:52,057 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 07:48:52,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:52,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:52,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587720479] [2022-01-10 07:48:52,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587720479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:52,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:52,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:52,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948507674] [2022-01-10 07:48:52,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:52,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:52,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:52,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:52,058 INFO L87 Difference]: Start difference. First operand 4603 states and 7207 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:52,260 INFO L93 Difference]: Finished difference Result 7387 states and 10892 transitions. [2022-01-10 07:48:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:52,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:52,268 INFO L225 Difference]: With dead ends: 7387 [2022-01-10 07:48:52,268 INFO L226 Difference]: Without dead ends: 4925 [2022-01-10 07:48:52,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:48:52,273 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 441 mSDsluCounter, 13518 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 17966 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 07:48:52,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 17966 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:52,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2022-01-10 07:48:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4609. [2022-01-10 07:48:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 4489 states have (on average 1.5731788817108487) internal successors, (7062), 4492 states have internal predecessors, (7062), 65 states have call successors, (65), 52 states have call predecessors, (65), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:48:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 7193 transitions. [2022-01-10 07:48:52,419 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 7193 transitions. Word has length 167 [2022-01-10 07:48:52,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:52,420 INFO L470 AbstractCegarLoop]: Abstraction has 4609 states and 7193 transitions. [2022-01-10 07:48:52,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 7193 transitions. [2022-01-10 07:48:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:52,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:52,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:52,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 07:48:52,629 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 07:48:52,630 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:52,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:52,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1113906190, now seen corresponding path program 1 times [2022-01-10 07:48:52,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:52,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921159599] [2022-01-10 07:48:52,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:52,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:52,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:52,632 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 07:48:52,632 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 07:48:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:52,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:52,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:52,946 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 07:48:52,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:52,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:52,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921159599] [2022-01-10 07:48:52,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921159599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:52,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:52,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:52,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577052033] [2022-01-10 07:48:52,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:52,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:52,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:52,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:52,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:52,947 INFO L87 Difference]: Start difference. First operand 4609 states and 7193 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:53,111 INFO L93 Difference]: Finished difference Result 7371 states and 10828 transitions. [2022-01-10 07:48:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:53,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:53,119 INFO L225 Difference]: With dead ends: 7371 [2022-01-10 07:48:53,119 INFO L226 Difference]: Without dead ends: 4903 [2022-01-10 07:48:53,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:48:53,126 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 402 mSDsluCounter, 13503 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 17951 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 07:48:53,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 17951 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:53,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2022-01-10 07:48:53,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4615. [2022-01-10 07:48:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4615 states, 4495 states have (on average 1.567964404894327) internal successors, (7048), 4498 states have internal predecessors, (7048), 65 states have call successors, (65), 52 states have call predecessors, (65), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:48:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4615 states to 4615 states and 7179 transitions. [2022-01-10 07:48:53,268 INFO L78 Accepts]: Start accepts. Automaton has 4615 states and 7179 transitions. Word has length 167 [2022-01-10 07:48:53,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:53,268 INFO L470 AbstractCegarLoop]: Abstraction has 4615 states and 7179 transitions. [2022-01-10 07:48:53,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4615 states and 7179 transitions. [2022-01-10 07:48:53,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:53,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:53,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:53,283 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 07:48:53,479 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 07:48:53,480 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:53,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:53,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1027954288, now seen corresponding path program 1 times [2022-01-10 07:48:53,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:53,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762158580] [2022-01-10 07:48:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:53,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:53,482 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 07:48:53,483 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 07:48:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:53,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:48:53,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:53,797 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 07:48:53,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:53,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:53,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762158580] [2022-01-10 07:48:53,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762158580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:53,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:53,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:48:53,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550739916] [2022-01-10 07:48:53,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:53,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:48:53,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:53,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:48:53,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:53,798 INFO L87 Difference]: Start difference. First operand 4615 states and 7179 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 07:48:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:54,122 INFO L93 Difference]: Finished difference Result 9354 states and 13317 transitions. [2022-01-10 07:48:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:48:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:54,137 INFO L225 Difference]: With dead ends: 9354 [2022-01-10 07:48:54,137 INFO L226 Difference]: Without dead ends: 6880 [2022-01-10 07:48:54,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:54,145 INFO L933 BasicCegarLoop]: 4521 mSDtfsCounter, 4376 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4376 SdHoareTripleChecker+Valid, 4971 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 07:48:54,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4376 Valid, 4971 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6880 states. [2022-01-10 07:48:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6880 to 6874. [2022-01-10 07:48:54,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6874 states, 6648 states have (on average 1.4757821901323707) internal successors, (9811), 6652 states have internal predecessors, (9811), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:48:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6874 states to 6874 states and 10057 transitions. [2022-01-10 07:48:54,429 INFO L78 Accepts]: Start accepts. Automaton has 6874 states and 10057 transitions. Word has length 167 [2022-01-10 07:48:54,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:54,430 INFO L470 AbstractCegarLoop]: Abstraction has 6874 states and 10057 transitions. [2022-01-10 07:48:54,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 07:48:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6874 states and 10057 transitions. [2022-01-10 07:48:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:54,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:54,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:54,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 07:48:54,635 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 07:48:54,636 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:54,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash -740494383, now seen corresponding path program 1 times [2022-01-10 07:48:54,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:54,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682091870] [2022-01-10 07:48:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:54,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:54,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:54,638 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 07:48:54,639 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 07:48:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:54,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:54,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:54,937 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 07:48:54,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:54,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:54,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682091870] [2022-01-10 07:48:54,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682091870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:54,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:54,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:54,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608476907] [2022-01-10 07:48:54,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:54,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:54,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:54,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:54,939 INFO L87 Difference]: Start difference. First operand 6874 states and 10057 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:55,407 INFO L93 Difference]: Finished difference Result 14533 states and 20039 transitions. [2022-01-10 07:48:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:55,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:55,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:55,423 INFO L225 Difference]: With dead ends: 14533 [2022-01-10 07:48:55,423 INFO L226 Difference]: Without dead ends: 9800 [2022-01-10 07:48:55,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:48:55,433 INFO L933 BasicCegarLoop]: 4454 mSDtfsCounter, 369 mSDsluCounter, 13535 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 17989 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 07:48:55,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 17989 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2022-01-10 07:48:55,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 6940. [2022-01-10 07:48:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6940 states, 6714 states have (on average 1.4681263032469467) internal successors, (9857), 6718 states have internal predecessors, (9857), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:48:55,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6940 states to 6940 states and 10103 transitions. [2022-01-10 07:48:55,750 INFO L78 Accepts]: Start accepts. Automaton has 6940 states and 10103 transitions. Word has length 167 [2022-01-10 07:48:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:55,750 INFO L470 AbstractCegarLoop]: Abstraction has 6940 states and 10103 transitions. [2022-01-10 07:48:55,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:55,750 INFO L276 IsEmpty]: Start isEmpty. Operand 6940 states and 10103 transitions. [2022-01-10 07:48:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:55,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:55,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:55,762 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 07:48:55,952 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 07:48:55,953 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:55,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:55,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2047636781, now seen corresponding path program 1 times [2022-01-10 07:48:55,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:55,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71010696] [2022-01-10 07:48:55,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:55,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:55,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:55,955 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 07:48:55,956 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 07:48:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:56,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:56,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:56,263 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 07:48:56,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:56,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:56,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71010696] [2022-01-10 07:48:56,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71010696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:56,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:56,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:56,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460379005] [2022-01-10 07:48:56,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:56,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:56,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:56,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:56,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:56,265 INFO L87 Difference]: Start difference. First operand 6940 states and 10103 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:56,622 INFO L93 Difference]: Finished difference Result 11977 states and 16617 transitions. [2022-01-10 07:48:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:56,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:56,635 INFO L225 Difference]: With dead ends: 11977 [2022-01-10 07:48:56,635 INFO L226 Difference]: Without dead ends: 7178 [2022-01-10 07:48:56,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:48:56,644 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 323 mSDsluCounter, 13468 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 17916 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 07:48:56,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 17916 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2022-01-10 07:48:56,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 6946. [2022-01-10 07:48:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 6720 states have (on average 1.4617559523809525) internal successors, (9823), 6724 states have internal predecessors, (9823), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:48:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10069 transitions. [2022-01-10 07:48:56,941 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10069 transitions. Word has length 167 [2022-01-10 07:48:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:56,941 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 10069 transitions. [2022-01-10 07:48:56,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10069 transitions. [2022-01-10 07:48:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:56,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:56,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:56,950 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 07:48:57,143 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 07:48:57,143 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:57,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:57,143 INFO L85 PathProgramCache]: Analyzing trace with hash -696251563, now seen corresponding path program 1 times [2022-01-10 07:48:57,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:57,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780620944] [2022-01-10 07:48:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:57,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:57,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:57,145 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 07:48:57,145 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 07:48:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:57,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:57,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:57,424 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 07:48:57,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:57,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:57,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780620944] [2022-01-10 07:48:57,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780620944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:57,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:57,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:57,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420292144] [2022-01-10 07:48:57,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:57,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:57,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:57,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:57,425 INFO L87 Difference]: Start difference. First operand 6946 states and 10069 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:57,816 INFO L93 Difference]: Finished difference Result 12115 states and 16713 transitions. [2022-01-10 07:48:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:57,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:57,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:57,829 INFO L225 Difference]: With dead ends: 12115 [2022-01-10 07:48:57,829 INFO L226 Difference]: Without dead ends: 7310 [2022-01-10 07:48:57,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:48:57,838 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 245 mSDsluCounter, 13438 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 17886 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 07:48:57,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 17886 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:57,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7310 states. [2022-01-10 07:48:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7310 to 6958. [2022-01-10 07:48:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 6732 states have (on average 1.4552881758764111) internal successors, (9797), 6736 states have internal predecessors, (9797), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:48:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10043 transitions. [2022-01-10 07:48:58,139 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10043 transitions. Word has length 167 [2022-01-10 07:48:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:58,140 INFO L470 AbstractCegarLoop]: Abstraction has 6958 states and 10043 transitions. [2022-01-10 07:48:58,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10043 transitions. [2022-01-10 07:48:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:58,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:58,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:58,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 07:48:58,341 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 07:48:58,342 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:58,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:58,342 INFO L85 PathProgramCache]: Analyzing trace with hash 628604631, now seen corresponding path program 1 times [2022-01-10 07:48:58,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:58,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682845362] [2022-01-10 07:48:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:58,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:58,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:58,343 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 07:48:58,344 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 07:48:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:58,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:58,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:58,651 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 07:48:58,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:58,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:58,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682845362] [2022-01-10 07:48:58,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682845362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:58,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:58,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:58,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596746446] [2022-01-10 07:48:58,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:58,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:58,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:58,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:58,652 INFO L87 Difference]: Start difference. First operand 6958 states and 10043 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:59,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:59,047 INFO L93 Difference]: Finished difference Result 12083 states and 16589 transitions. [2022-01-10 07:48:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:59,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:48:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:59,060 INFO L225 Difference]: With dead ends: 12083 [2022-01-10 07:48:59,060 INFO L226 Difference]: Without dead ends: 7266 [2022-01-10 07:48:59,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:48:59,069 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 206 mSDsluCounter, 13423 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 17871 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 07:48:59,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 17871 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7266 states. [2022-01-10 07:48:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7266 to 6970. [2022-01-10 07:48:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6970 states, 6744 states have (on average 1.4488434163701067) internal successors, (9771), 6748 states have internal predecessors, (9771), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:48:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6970 states to 6970 states and 10017 transitions. [2022-01-10 07:48:59,382 INFO L78 Accepts]: Start accepts. Automaton has 6970 states and 10017 transitions. Word has length 167 [2022-01-10 07:48:59,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:59,382 INFO L470 AbstractCegarLoop]: Abstraction has 6970 states and 10017 transitions. [2022-01-10 07:48:59,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:48:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6970 states and 10017 transitions. [2022-01-10 07:48:59,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:48:59,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:59,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:59,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 07:48:59,591 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 07:48:59,592 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash 655670233, now seen corresponding path program 1 times [2022-01-10 07:48:59,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:59,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662689686] [2022-01-10 07:48:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:59,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:59,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:59,594 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 07:48:59,595 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 07:48:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:59,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:59,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:59,935 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 07:48:59,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:59,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:59,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662689686] [2022-01-10 07:48:59,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662689686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:59,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:59,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:59,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207653776] [2022-01-10 07:48:59,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:59,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:59,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:59,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:59,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:59,937 INFO L87 Difference]: Start difference. First operand 6970 states and 10017 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:49:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:00,293 INFO L93 Difference]: Finished difference Result 12051 states and 16465 transitions. [2022-01-10 07:49:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:00,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:49:00,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:00,307 INFO L225 Difference]: With dead ends: 12051 [2022-01-10 07:49:00,307 INFO L226 Difference]: Without dead ends: 7222 [2022-01-10 07:49:00,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:49:00,316 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 167 mSDsluCounter, 13408 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 17856 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 07:49:00,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 17856 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7222 states. [2022-01-10 07:49:00,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7222 to 6982. [2022-01-10 07:49:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6982 states, 6756 states have (on average 1.442421551213736) internal successors, (9745), 6760 states have internal predecessors, (9745), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:49:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6982 states to 6982 states and 9991 transitions. [2022-01-10 07:49:00,697 INFO L78 Accepts]: Start accepts. Automaton has 6982 states and 9991 transitions. Word has length 167 [2022-01-10 07:49:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:00,697 INFO L470 AbstractCegarLoop]: Abstraction has 6982 states and 9991 transitions. [2022-01-10 07:49:00,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:49:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 6982 states and 9991 transitions. [2022-01-10 07:49:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:49:00,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:00,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:00,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 07:49:00,905 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 07:49:00,905 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:00,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash -311680421, now seen corresponding path program 1 times [2022-01-10 07:49:00,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:00,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237615975] [2022-01-10 07:49:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:00,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:00,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:00,907 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 07:49:00,908 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 07:49:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:01,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:01,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:01,207 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 07:49:01,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:01,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:01,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237615975] [2022-01-10 07:49:01,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237615975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:01,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:01,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:01,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074506494] [2022-01-10 07:49:01,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:01,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:01,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:01,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:01,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:01,209 INFO L87 Difference]: Start difference. First operand 6982 states and 9991 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:49:01,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:01,549 INFO L93 Difference]: Finished difference Result 12019 states and 16341 transitions. [2022-01-10 07:49:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:01,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:49:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:01,562 INFO L225 Difference]: With dead ends: 12019 [2022-01-10 07:49:01,562 INFO L226 Difference]: Without dead ends: 7178 [2022-01-10 07:49:01,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:49:01,570 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 128 mSDsluCounter, 13393 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 17841 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 07:49:01,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 17841 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:01,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2022-01-10 07:49:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 6994. [2022-01-10 07:49:01,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6994 states, 6768 states have (on average 1.4360224586288417) internal successors, (9719), 6772 states have internal predecessors, (9719), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:49:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6994 states to 6994 states and 9965 transitions. [2022-01-10 07:49:01,948 INFO L78 Accepts]: Start accepts. Automaton has 6994 states and 9965 transitions. Word has length 167 [2022-01-10 07:49:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:01,948 INFO L470 AbstractCegarLoop]: Abstraction has 6994 states and 9965 transitions. [2022-01-10 07:49:01,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:49:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6994 states and 9965 transitions. [2022-01-10 07:49:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:49:01,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:01,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:01,957 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 07:49:02,154 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 07:49:02,154 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:02,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:02,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1997860259, now seen corresponding path program 1 times [2022-01-10 07:49:02,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:02,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404125584] [2022-01-10 07:49:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:02,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:02,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:02,156 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 07:49:02,158 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 07:49:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:02,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:02,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:02,436 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 07:49:02,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:02,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:02,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404125584] [2022-01-10 07:49:02,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404125584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:02,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:02,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:02,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058464103] [2022-01-10 07:49:02,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:02,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:02,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:02,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:02,438 INFO L87 Difference]: Start difference. First operand 6994 states and 9965 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:49:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:02,789 INFO L93 Difference]: Finished difference Result 11987 states and 16217 transitions. [2022-01-10 07:49:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:02,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:49:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:02,804 INFO L225 Difference]: With dead ends: 11987 [2022-01-10 07:49:02,804 INFO L226 Difference]: Without dead ends: 7134 [2022-01-10 07:49:02,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:49:02,812 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 89 mSDsluCounter, 13378 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 17826 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 07:49:02,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 17826 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:02,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2022-01-10 07:49:03,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7006. [2022-01-10 07:49:03,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 6780 states have (on average 1.429646017699115) internal successors, (9693), 6784 states have internal predecessors, (9693), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:49:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 9939 transitions. [2022-01-10 07:49:03,188 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 9939 transitions. Word has length 167 [2022-01-10 07:49:03,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:03,188 INFO L470 AbstractCegarLoop]: Abstraction has 7006 states and 9939 transitions. [2022-01-10 07:49:03,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:49:03,189 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 9939 transitions. [2022-01-10 07:49:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:49:03,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:03,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:03,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-01-10 07:49:03,390 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 07:49:03,390 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1437160481, now seen corresponding path program 1 times [2022-01-10 07:49:03,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:03,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36520537] [2022-01-10 07:49:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:03,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:03,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:03,392 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 07:49:03,394 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 07:49:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:03,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:03,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:03,698 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 07:49:03,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:03,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:03,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36520537] [2022-01-10 07:49:03,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36520537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:03,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:03,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:03,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994654189] [2022-01-10 07:49:03,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:03,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:03,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:03,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:03,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:03,700 INFO L87 Difference]: Start difference. First operand 7006 states and 9939 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:49:04,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:04,105 INFO L93 Difference]: Finished difference Result 12753 states and 17095 transitions. [2022-01-10 07:49:04,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:04,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:49:04,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:04,121 INFO L225 Difference]: With dead ends: 12753 [2022-01-10 07:49:04,121 INFO L226 Difference]: Without dead ends: 7888 [2022-01-10 07:49:04,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:49:04,130 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 50 mSDsluCounter, 13363 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 17811 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 07:49:04,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 17811 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:04,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7888 states. [2022-01-10 07:49:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7888 to 7132. [2022-01-10 07:49:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 6906 states have (on average 1.4218071242397914) internal successors, (9819), 6910 states have internal predecessors, (9819), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:49:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10065 transitions. [2022-01-10 07:49:04,533 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10065 transitions. Word has length 167 [2022-01-10 07:49:04,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:04,533 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10065 transitions. [2022-01-10 07:49:04,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:49:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10065 transitions. [2022-01-10 07:49:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:49:04,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:04,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:04,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 07:49:04,735 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 07:49:04,735 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:04,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash -993259807, now seen corresponding path program 1 times [2022-01-10 07:49:04,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:04,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086765811] [2022-01-10 07:49:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:04,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:04,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:04,737 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 07:49:04,738 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 07:49:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:04,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:04,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:05,038 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 07:49:05,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:05,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:05,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086765811] [2022-01-10 07:49:05,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086765811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:05,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:05,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:05,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190283908] [2022-01-10 07:49:05,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:05,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:05,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:05,040 INFO L87 Difference]: Start difference. First operand 7132 states and 10065 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:49:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:05,501 INFO L93 Difference]: Finished difference Result 12151 states and 16265 transitions. [2022-01-10 07:49:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:05,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:49:05,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:05,513 INFO L225 Difference]: With dead ends: 12151 [2022-01-10 07:49:05,513 INFO L226 Difference]: Without dead ends: 7160 [2022-01-10 07:49:05,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:49:05,521 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 10 mSDsluCounter, 13343 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17791 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 07:49:05,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 17791 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7160 states. [2022-01-10 07:49:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7160 to 7144. [2022-01-10 07:49:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7144 states, 6918 states have (on average 1.4155825383058687) internal successors, (9793), 6922 states have internal predecessors, (9793), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:49:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 10039 transitions. [2022-01-10 07:49:05,926 INFO L78 Accepts]: Start accepts. Automaton has 7144 states and 10039 transitions. Word has length 167 [2022-01-10 07:49:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:05,926 INFO L470 AbstractCegarLoop]: Abstraction has 7144 states and 10039 transitions. [2022-01-10 07:49:05,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:49:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7144 states and 10039 transitions. [2022-01-10 07:49:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:49:05,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:05,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:05,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-01-10 07:49:06,128 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 07:49:06,128 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1346348189, now seen corresponding path program 1 times [2022-01-10 07:49:06,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:06,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722319644] [2022-01-10 07:49:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:06,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:06,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:06,130 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 07:49:06,132 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 07:49:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:06,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:06,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:06,472 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 07:49:06,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:06,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:06,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722319644] [2022-01-10 07:49:06,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722319644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:06,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:06,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:49:06,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427229993] [2022-01-10 07:49:06,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:06,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:06,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:06,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:06,474 INFO L87 Difference]: Start difference. First operand 7144 states and 10039 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 07:49:07,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:07,217 INFO L93 Difference]: Finished difference Result 17081 states and 22143 transitions. [2022-01-10 07:49:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:07,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 167 [2022-01-10 07:49:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:07,239 INFO L225 Difference]: With dead ends: 17081 [2022-01-10 07:49:07,239 INFO L226 Difference]: Without dead ends: 12078 [2022-01-10 07:49:07,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:07,249 INFO L933 BasicCegarLoop]: 4470 mSDtfsCounter, 4276 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4276 SdHoareTripleChecker+Valid, 4920 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 07:49:07,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4276 Valid, 4920 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2022-01-10 07:49:08,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 12074. [2022-01-10 07:49:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12074 states, 11628 states have (on average 1.3301513587891296) internal successors, (15467), 11638 states have internal predecessors, (15467), 240 states have call successors, (240), 200 states have call predecessors, (240), 204 states have return successors, (244), 236 states have call predecessors, (244), 240 states have call successors, (244) [2022-01-10 07:49:08,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12074 states to 12074 states and 15951 transitions. [2022-01-10 07:49:08,032 INFO L78 Accepts]: Start accepts. Automaton has 12074 states and 15951 transitions. Word has length 167 [2022-01-10 07:49:08,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:08,033 INFO L470 AbstractCegarLoop]: Abstraction has 12074 states and 15951 transitions. [2022-01-10 07:49:08,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 07:49:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 12074 states and 15951 transitions. [2022-01-10 07:49:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-01-10 07:49:08,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:08,042 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:08,066 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 07:49:08,252 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 07:49:08,252 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:08,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1884041231, now seen corresponding path program 1 times [2022-01-10 07:49:08,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:08,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869747925] [2022-01-10 07:49:08,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:08,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:08,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:08,254 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 07:49:08,255 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 07:49:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:08,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:08,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 07:49:08,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:08,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:08,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869747925] [2022-01-10 07:49:08,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869747925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:08,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:08,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:08,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859224029] [2022-01-10 07:49:08,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:08,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:08,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:08,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:08,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:08,806 INFO L87 Difference]: Start difference. First operand 12074 states and 15951 transitions. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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 07:49:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:10,646 INFO L93 Difference]: Finished difference Result 32424 states and 40407 transitions. [2022-01-10 07:49:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:10,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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 272 [2022-01-10 07:49:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:10,690 INFO L225 Difference]: With dead ends: 32424 [2022-01-10 07:49:10,690 INFO L226 Difference]: Without dead ends: 22492 [2022-01-10 07:49:10,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 270 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 07:49:10,703 INFO L933 BasicCegarLoop]: 4668 mSDtfsCounter, 4619 mSDsluCounter, 4817 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4625 SdHoareTripleChecker+Valid, 9485 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:10,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4625 Valid, 9485 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:10,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22492 states. [2022-01-10 07:49:12,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22492 to 22490. [2022-01-10 07:49:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22490 states, 21593 states have (on average 1.2698096605381373) internal successors, (27419), 21620 states have internal predecessors, (27419), 471 states have call successors, (471), 400 states have call predecessors, (471), 424 states have return successors, (519), 471 states have call predecessors, (519), 471 states have call successors, (519) [2022-01-10 07:49:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22490 states to 22490 states and 28409 transitions. [2022-01-10 07:49:12,434 INFO L78 Accepts]: Start accepts. Automaton has 22490 states and 28409 transitions. Word has length 272 [2022-01-10 07:49:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:12,435 INFO L470 AbstractCegarLoop]: Abstraction has 22490 states and 28409 transitions. [2022-01-10 07:49:12,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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 07:49:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 22490 states and 28409 transitions. [2022-01-10 07:49:12,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-01-10 07:49:12,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:12,446 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:12,471 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 07:49:12,655 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 07:49:12,655 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1866753681, now seen corresponding path program 1 times [2022-01-10 07:49:12,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:12,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576533388] [2022-01-10 07:49:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:12,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:12,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:12,657 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 07:49:12,657 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 07:49:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:12,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:12,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-01-10 07:49:13,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:13,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:13,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576533388] [2022-01-10 07:49:13,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576533388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:13,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:13,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:13,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804872818] [2022-01-10 07:49:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:13,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:13,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:13,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:13,072 INFO L87 Difference]: Start difference. First operand 22490 states and 28409 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 07:49:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:14,656 INFO L93 Difference]: Finished difference Result 42824 states and 52798 transitions. [2022-01-10 07:49:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:14,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 272 [2022-01-10 07:49:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:14,700 INFO L225 Difference]: With dead ends: 42824 [2022-01-10 07:49:14,700 INFO L226 Difference]: Without dead ends: 22476 [2022-01-10 07:49:14,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 270 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 07:49:14,727 INFO L933 BasicCegarLoop]: 4449 mSDtfsCounter, 484 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 8407 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 07:49:14,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 8407 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22476 states. [2022-01-10 07:49:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22476 to 22476. [2022-01-10 07:49:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22476 states, 21582 states have (on average 1.2694838291168566) internal successors, (27398), 21608 states have internal predecessors, (27398), 468 states have call successors, (468), 400 states have call predecessors, (468), 424 states have return successors, (516), 468 states have call predecessors, (516), 468 states have call successors, (516) [2022-01-10 07:49:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22476 states to 22476 states and 28382 transitions. [2022-01-10 07:49:16,673 INFO L78 Accepts]: Start accepts. Automaton has 22476 states and 28382 transitions. Word has length 272 [2022-01-10 07:49:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:16,673 INFO L470 AbstractCegarLoop]: Abstraction has 22476 states and 28382 transitions. [2022-01-10 07:49:16,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 07:49:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 22476 states and 28382 transitions. [2022-01-10 07:49:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-01-10 07:49:16,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:16,683 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:16,695 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 07:49:16,892 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 07:49:16,892 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1667494970, now seen corresponding path program 1 times [2022-01-10 07:49:16,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:16,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244105844] [2022-01-10 07:49:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:16,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:16,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:16,894 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 07:49:16,895 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 07:49:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:17,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:17,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 07:49:17,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:17,438 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:17,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244105844] [2022-01-10 07:49:17,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244105844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:17,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:17,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:17,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069866388] [2022-01-10 07:49:17,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:17,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:17,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:17,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:17,439 INFO L87 Difference]: Start difference. First operand 22476 states and 28382 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 07:49:21,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:21,414 INFO L93 Difference]: Finished difference Result 68849 states and 83912 transitions. [2022-01-10 07:49:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:21,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 273 [2022-01-10 07:49:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted.