/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/systemc/transmitter.07.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:44:31,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:44:31,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:44:31,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:44:31,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:44:31,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:44:31,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:44:31,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:44:31,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:44:31,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:44:31,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:44:31,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:44:31,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:44:31,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:44:31,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:44:31,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:44:31,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:44:31,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:44:31,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:44:31,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:44:31,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:44:31,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:44:31,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:44:31,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:44:31,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 06:44:31,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:44:31,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:44:31,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:44:31,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:44:31,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:44:31,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:44:31,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:44:31,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:44:31,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:44:31,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:44:31,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:44:31,772 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 06:44:31,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:44:31,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:44:31,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:44:31,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:44:31,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:44:31,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:44:31,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:44:31,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:44:31,792 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:44:31,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:44:31,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:44:31,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:44:31,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:44:31,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:44:31,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:44:31,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:44:31,793 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:44:31,794 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:44:31,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:44:31,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:44:31,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:44:31,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:44:31,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:44:31,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:44:31,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:44:31,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:44:31,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:44:31,795 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:44:31,796 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:44:31,796 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:44:31,796 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:44:31,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:44:31,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:44:31,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:44:31,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:44:32,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:44:32,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:44:32,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:44:32,006 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:44:32,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.07.cil.c [2022-01-10 06:44:32,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f5cd0566/0aa7b95b71044e2891169464adc6f469/FLAG78b525b1d [2022-01-10 06:44:32,441 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:44:32,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.07.cil.c [2022-01-10 06:44:32,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f5cd0566/0aa7b95b71044e2891169464adc6f469/FLAG78b525b1d [2022-01-10 06:44:32,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f5cd0566/0aa7b95b71044e2891169464adc6f469 [2022-01-10 06:44:32,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:44:32,465 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:44:32,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:44:32,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:44:32,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:44:32,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1066000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32, skipping insertion in model container [2022-01-10 06:44:32,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:44:32,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:44:32,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.07.cil.c[706,719] [2022-01-10 06:44:32,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:44:32,716 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:44:32,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.07.cil.c[706,719] [2022-01-10 06:44:32,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:44:32,771 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:44:32,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32 WrapperNode [2022-01-10 06:44:32,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:44:32,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:44:32,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:44:32,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:44:32,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,816 INFO L137 Inliner]: procedures = 42, calls = 51, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 529 [2022-01-10 06:44:32,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:44:32,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:44:32,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:44:32,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:44:32,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:44:32,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:44:32,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:44:32,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:44:32,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (1/1) ... [2022-01-10 06:44:32,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:44:32,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:44:32,909 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 06:44:32,911 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 06:44:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:44:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:44:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 06:44:32,932 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 06:44:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 06:44:32,932 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 06:44:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 06:44:32,932 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 06:44:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 06:44:32,932 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 06:44:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 06:44:32,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 06:44:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 06:44:32,932 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 06:44:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:44:32,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:44:33,014 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:44:33,016 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:44:33,422 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:44:33,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:44:33,434 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 06:44:33,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:44:33 BoogieIcfgContainer [2022-01-10 06:44:33,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:44:33,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:44:33,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:44:33,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:44:33,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:44:32" (1/3) ... [2022-01-10 06:44:33,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173f1bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:44:33, skipping insertion in model container [2022-01-10 06:44:33,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:32" (2/3) ... [2022-01-10 06:44:33,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173f1bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:44:33, skipping insertion in model container [2022-01-10 06:44:33,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:44:33" (3/3) ... [2022-01-10 06:44:33,441 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.07.cil.c [2022-01-10 06:44:33,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:44:33,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:44:33,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:44:33,479 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 06:44:33,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:44:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 253 states, 225 states have (on average 1.64) internal successors, (369), 227 states have internal predecessors, (369), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 06:44:33,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:33,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:33,509 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] [2022-01-10 06:44:33,510 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:33,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash 208630803, now seen corresponding path program 1 times [2022-01-10 06:44:33,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:33,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510520862] [2022-01-10 06:44:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:33,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:33,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:33,537 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 06:44:33,542 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 06:44:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:33,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:44:33,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:33,986 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 06:44:33,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:33,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:33,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510520862] [2022-01-10 06:44:33,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510520862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:33,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:33,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:44:33,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929067946] [2022-01-10 06:44:33,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:33,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:44:33,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:44:34,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:44:34,024 INFO L87 Difference]: Start difference. First operand has 253 states, 225 states have (on average 1.64) internal successors, (369), 227 states have internal predecessors, (369), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 06:44:34,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:34,100 INFO L93 Difference]: Finished difference Result 495 states and 801 transitions. [2022-01-10 06:44:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:44:34,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:34,113 INFO L225 Difference]: With dead ends: 495 [2022-01-10 06:44:34,113 INFO L226 Difference]: Without dead ends: 248 [2022-01-10 06:44:34,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 06:44:34,120 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 373 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 383 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 06:44:34,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 383 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-01-10 06:44:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-01-10 06:44:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 221 states have (on average 1.5384615384615385) internal successors, (340), 222 states have internal predecessors, (340), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 06:44:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 380 transitions. [2022-01-10 06:44:34,191 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 380 transitions. Word has length 127 [2022-01-10 06:44:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:34,192 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 380 transitions. [2022-01-10 06:44:34,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 06:44:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 380 transitions. [2022-01-10 06:44:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:34,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:34,197 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] [2022-01-10 06:44:34,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:34,397 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 06:44:34,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:34,400 INFO L85 PathProgramCache]: Analyzing trace with hash 541273941, now seen corresponding path program 1 times [2022-01-10 06:44:34,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:34,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491079796] [2022-01-10 06:44:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:34,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:34,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:34,402 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 06:44:34,404 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 06:44:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:34,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:34,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:34,733 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 06:44:34,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:34,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:34,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491079796] [2022-01-10 06:44:34,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491079796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:34,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:34,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:34,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120415994] [2022-01-10 06:44:34,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:34,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:34,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:34,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:34,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:34,742 INFO L87 Difference]: Start difference. First operand 248 states and 380 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 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 06:44:35,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:35,165 INFO L93 Difference]: Finished difference Result 740 states and 1156 transitions. [2022-01-10 06:44:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:35,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:35,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:35,170 INFO L225 Difference]: With dead ends: 740 [2022-01-10 06:44:35,170 INFO L226 Difference]: Without dead ends: 507 [2022-01-10 06:44:35,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:35,173 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 702 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:35,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1143 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:44:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-01-10 06:44:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 488. [2022-01-10 06:44:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 439 states have (on average 1.5489749430523918) internal successors, (680), 441 states have internal predecessors, (680), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:44:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 751 transitions. [2022-01-10 06:44:35,202 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 751 transitions. Word has length 127 [2022-01-10 06:44:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:35,202 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 751 transitions. [2022-01-10 06:44:35,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 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 06:44:35,203 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 751 transitions. [2022-01-10 06:44:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:35,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:35,206 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] [2022-01-10 06:44:35,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 06:44:35,413 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 06:44:35,414 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:35,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:35,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1967689878, now seen corresponding path program 1 times [2022-01-10 06:44:35,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:35,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557409946] [2022-01-10 06:44:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:35,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:35,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:35,416 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 06:44:35,420 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 06:44:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:35,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:35,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:35,710 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 06:44:35,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:35,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:35,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557409946] [2022-01-10 06:44:35,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557409946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:35,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:35,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:35,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910940989] [2022-01-10 06:44:35,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:35,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:35,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:35,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:35,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:35,713 INFO L87 Difference]: Start difference. First operand 488 states and 751 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:35,948 INFO L93 Difference]: Finished difference Result 961 states and 1485 transitions. [2022-01-10 06:44:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:35,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:35,952 INFO L225 Difference]: With dead ends: 961 [2022-01-10 06:44:35,952 INFO L226 Difference]: Without dead ends: 488 [2022-01-10 06:44:35,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:35,955 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 501 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:35,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 759 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:35,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-01-10 06:44:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-01-10 06:44:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 439 states have (on average 1.5330296127562641) internal successors, (673), 441 states have internal predecessors, (673), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:44:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 744 transitions. [2022-01-10 06:44:35,982 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 744 transitions. Word has length 127 [2022-01-10 06:44:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:35,982 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 744 transitions. [2022-01-10 06:44:35,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 744 transitions. [2022-01-10 06:44:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:35,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:35,989 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] [2022-01-10 06:44:36,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:36,199 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 06:44:36,199 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1850842666, now seen corresponding path program 1 times [2022-01-10 06:44:36,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:36,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522689704] [2022-01-10 06:44:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:36,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:36,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:36,201 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 06:44:36,203 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 06:44:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:36,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:36,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:36,448 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 06:44:36,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:36,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522689704] [2022-01-10 06:44:36,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522689704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:36,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:36,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:36,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672102409] [2022-01-10 06:44:36,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:36,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:36,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:36,452 INFO L87 Difference]: Start difference. First operand 488 states and 744 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:36,672 INFO L93 Difference]: Finished difference Result 961 states and 1471 transitions. [2022-01-10 06:44:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:36,675 INFO L225 Difference]: With dead ends: 961 [2022-01-10 06:44:36,675 INFO L226 Difference]: Without dead ends: 488 [2022-01-10 06:44:36,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:36,677 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 495 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:36,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 752 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-01-10 06:44:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-01-10 06:44:36,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 439 states have (on average 1.5170842824601367) internal successors, (666), 441 states have internal predecessors, (666), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:44:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 737 transitions. [2022-01-10 06:44:36,711 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 737 transitions. Word has length 127 [2022-01-10 06:44:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:36,712 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 737 transitions. [2022-01-10 06:44:36,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 737 transitions. [2022-01-10 06:44:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:36,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:36,713 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] [2022-01-10 06:44:36,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:36,921 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 06:44:36,922 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:36,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:36,922 INFO L85 PathProgramCache]: Analyzing trace with hash -727095146, now seen corresponding path program 1 times [2022-01-10 06:44:36,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:36,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008092035] [2022-01-10 06:44:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:36,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:36,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:36,924 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 06:44:36,926 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 06:44:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:37,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:37,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:37,183 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 06:44:37,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:37,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:37,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008092035] [2022-01-10 06:44:37,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008092035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:37,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:37,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:37,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041756531] [2022-01-10 06:44:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:37,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:37,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:37,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:37,186 INFO L87 Difference]: Start difference. First operand 488 states and 737 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:37,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:37,398 INFO L93 Difference]: Finished difference Result 961 states and 1457 transitions. [2022-01-10 06:44:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:37,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:37,401 INFO L225 Difference]: With dead ends: 961 [2022-01-10 06:44:37,401 INFO L226 Difference]: Without dead ends: 488 [2022-01-10 06:44:37,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:37,403 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 489 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:37,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 745 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-01-10 06:44:37,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-01-10 06:44:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 439 states have (on average 1.501138952164009) internal successors, (659), 441 states have internal predecessors, (659), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:44:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 730 transitions. [2022-01-10 06:44:37,445 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 730 transitions. Word has length 127 [2022-01-10 06:44:37,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:37,445 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 730 transitions. [2022-01-10 06:44:37,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:37,445 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 730 transitions. [2022-01-10 06:44:37,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:37,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:37,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:37,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 06:44:37,653 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 06:44:37,654 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:37,654 INFO L85 PathProgramCache]: Analyzing trace with hash -690845226, now seen corresponding path program 1 times [2022-01-10 06:44:37,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:37,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88401897] [2022-01-10 06:44:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:37,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:37,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:37,656 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 06:44:37,657 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 06:44:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:37,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:37,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:37,901 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 06:44:37,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:37,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:37,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88401897] [2022-01-10 06:44:37,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88401897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:37,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:37,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:37,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790372778] [2022-01-10 06:44:37,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:37,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:37,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:37,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:37,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:37,903 INFO L87 Difference]: Start difference. First operand 488 states and 730 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:38,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:38,110 INFO L93 Difference]: Finished difference Result 961 states and 1443 transitions. [2022-01-10 06:44:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:38,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:38,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:38,112 INFO L225 Difference]: With dead ends: 961 [2022-01-10 06:44:38,112 INFO L226 Difference]: Without dead ends: 488 [2022-01-10 06:44:38,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:38,114 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 483 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:38,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 738 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-01-10 06:44:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-01-10 06:44:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 439 states have (on average 1.4851936218678816) internal successors, (652), 441 states have internal predecessors, (652), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:44:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 723 transitions. [2022-01-10 06:44:38,142 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 723 transitions. Word has length 127 [2022-01-10 06:44:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:38,142 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 723 transitions. [2022-01-10 06:44:38,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 723 transitions. [2022-01-10 06:44:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:38,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:38,143 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] [2022-01-10 06:44:38,160 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 06:44:38,350 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 06:44:38,352 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:38,353 INFO L85 PathProgramCache]: Analyzing trace with hash -966770538, now seen corresponding path program 1 times [2022-01-10 06:44:38,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:38,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778347426] [2022-01-10 06:44:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:38,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:38,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:38,354 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 06:44:38,355 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 06:44:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:38,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:38,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:38,600 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 06:44:38,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:38,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:38,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778347426] [2022-01-10 06:44:38,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778347426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:38,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:38,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:38,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404657987] [2022-01-10 06:44:38,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:38,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:38,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:38,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:38,602 INFO L87 Difference]: Start difference. First operand 488 states and 723 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:38,834 INFO L93 Difference]: Finished difference Result 961 states and 1429 transitions. [2022-01-10 06:44:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:38,836 INFO L225 Difference]: With dead ends: 961 [2022-01-10 06:44:38,836 INFO L226 Difference]: Without dead ends: 488 [2022-01-10 06:44:38,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:38,838 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 477 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:38,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 731 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-01-10 06:44:38,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-01-10 06:44:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 439 states have (on average 1.469248291571754) internal successors, (645), 441 states have internal predecessors, (645), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:44:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 716 transitions. [2022-01-10 06:44:38,854 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 716 transitions. Word has length 127 [2022-01-10 06:44:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:38,855 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 716 transitions. [2022-01-10 06:44:38,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 716 transitions. [2022-01-10 06:44:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:38,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:38,856 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] [2022-01-10 06:44:38,873 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 06:44:39,063 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 06:44:39,064 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:39,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:39,064 INFO L85 PathProgramCache]: Analyzing trace with hash -421482026, now seen corresponding path program 1 times [2022-01-10 06:44:39,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:39,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408515132] [2022-01-10 06:44:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:39,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:39,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:39,066 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 06:44:39,067 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 06:44:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:39,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:39,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:39,314 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 06:44:39,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:39,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:39,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408515132] [2022-01-10 06:44:39,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408515132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:39,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:39,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:39,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519615596] [2022-01-10 06:44:39,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:39,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:39,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:39,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:39,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:39,316 INFO L87 Difference]: Start difference. First operand 488 states and 716 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:39,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:39,537 INFO L93 Difference]: Finished difference Result 961 states and 1415 transitions. [2022-01-10 06:44:39,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:39,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:39,539 INFO L225 Difference]: With dead ends: 961 [2022-01-10 06:44:39,539 INFO L226 Difference]: Without dead ends: 488 [2022-01-10 06:44:39,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:39,541 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 471 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:39,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 724 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-01-10 06:44:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-01-10 06:44:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 439 states have (on average 1.4533029612756265) internal successors, (638), 441 states have internal predecessors, (638), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:44:39,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 709 transitions. [2022-01-10 06:44:39,555 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 709 transitions. Word has length 127 [2022-01-10 06:44:39,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:39,556 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 709 transitions. [2022-01-10 06:44:39,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 709 transitions. [2022-01-10 06:44:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:39,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:39,557 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] [2022-01-10 06:44:39,571 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 06:44:39,764 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 06:44:39,765 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:39,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1840091224, now seen corresponding path program 1 times [2022-01-10 06:44:39,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:39,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744346211] [2022-01-10 06:44:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:39,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:39,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:39,767 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 06:44:39,767 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 06:44:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:39,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:39,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:40,017 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 06:44:40,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:40,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:40,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744346211] [2022-01-10 06:44:40,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744346211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:40,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:40,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:40,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171196226] [2022-01-10 06:44:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:40,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:40,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:40,019 INFO L87 Difference]: Start difference. First operand 488 states and 709 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:40,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:40,317 INFO L93 Difference]: Finished difference Result 1083 states and 1586 transitions. [2022-01-10 06:44:40,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:40,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:40,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:40,320 INFO L225 Difference]: With dead ends: 1083 [2022-01-10 06:44:40,320 INFO L226 Difference]: Without dead ends: 610 [2022-01-10 06:44:40,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:40,322 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 541 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:40,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 717 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-01-10 06:44:40,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-01-10 06:44:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 555 states have (on average 1.427027027027027) internal successors, (792), 557 states have internal predecessors, (792), 37 states have call successors, (37), 16 states have call predecessors, (37), 17 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 06:44:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 867 transitions. [2022-01-10 06:44:40,346 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 867 transitions. Word has length 127 [2022-01-10 06:44:40,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:40,346 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 867 transitions. [2022-01-10 06:44:40,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 867 transitions. [2022-01-10 06:44:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:40,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:40,348 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] [2022-01-10 06:44:40,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 06:44:40,556 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 06:44:40,556 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:40,557 INFO L85 PathProgramCache]: Analyzing trace with hash -99004008, now seen corresponding path program 1 times [2022-01-10 06:44:40,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:40,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339068253] [2022-01-10 06:44:40,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:40,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:40,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:40,558 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 06:44:40,561 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 06:44:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:40,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:40,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:40,809 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 06:44:40,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:40,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339068253] [2022-01-10 06:44:40,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339068253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:40,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:40,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:40,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079333460] [2022-01-10 06:44:40,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:40,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:40,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:40,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:40,812 INFO L87 Difference]: Start difference. First operand 610 states and 867 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:41,158 INFO L93 Difference]: Finished difference Result 1327 states and 1902 transitions. [2022-01-10 06:44:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:41,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:41,162 INFO L225 Difference]: With dead ends: 1327 [2022-01-10 06:44:41,162 INFO L226 Difference]: Without dead ends: 732 [2022-01-10 06:44:41,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:41,165 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 534 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:41,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 708 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-01-10 06:44:41,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2022-01-10 06:44:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 671 states have (on average 1.4038748137108792) internal successors, (942), 673 states have internal predecessors, (942), 39 states have call successors, (39), 20 states have call predecessors, (39), 21 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 06:44:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1021 transitions. [2022-01-10 06:44:41,191 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1021 transitions. Word has length 127 [2022-01-10 06:44:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:41,192 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1021 transitions. [2022-01-10 06:44:41,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1021 transitions. [2022-01-10 06:44:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:41,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:41,193 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] [2022-01-10 06:44:41,203 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 06:44:41,401 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 06:44:41,401 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:41,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:41,402 INFO L85 PathProgramCache]: Analyzing trace with hash 337113369, now seen corresponding path program 1 times [2022-01-10 06:44:41,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:41,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070174499] [2022-01-10 06:44:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:41,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:41,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:41,403 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 06:44:41,404 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 06:44:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:41,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:41,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:41,642 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 06:44:41,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:41,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:41,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070174499] [2022-01-10 06:44:41,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070174499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:41,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:41,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:41,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631471595] [2022-01-10 06:44:41,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:41,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:41,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:41,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:41,645 INFO L87 Difference]: Start difference. First operand 732 states and 1021 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:41,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:41,950 INFO L93 Difference]: Finished difference Result 1571 states and 2210 transitions. [2022-01-10 06:44:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:41,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:41,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:41,955 INFO L225 Difference]: With dead ends: 1571 [2022-01-10 06:44:41,955 INFO L226 Difference]: Without dead ends: 854 [2022-01-10 06:44:41,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:41,958 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 527 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:41,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 701 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:41,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-01-10 06:44:41,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2022-01-10 06:44:41,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 787 states have (on average 1.3824650571791615) internal successors, (1088), 789 states have internal predecessors, (1088), 41 states have call successors, (41), 24 states have call predecessors, (41), 25 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 06:44:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1171 transitions. [2022-01-10 06:44:41,992 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1171 transitions. Word has length 127 [2022-01-10 06:44:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:41,992 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1171 transitions. [2022-01-10 06:44:41,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1171 transitions. [2022-01-10 06:44:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:41,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:41,993 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] [2022-01-10 06:44:42,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 06:44:42,201 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 06:44:42,202 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:42,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:42,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1390786521, now seen corresponding path program 1 times [2022-01-10 06:44:42,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:42,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351473646] [2022-01-10 06:44:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:42,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:42,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:42,204 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 06:44:42,205 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 06:44:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:42,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:42,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:42,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:42,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:42,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351473646] [2022-01-10 06:44:42,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351473646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:42,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:42,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:42,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915219164] [2022-01-10 06:44:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:42,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:42,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:42,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:42,508 INFO L87 Difference]: Start difference. First operand 854 states and 1171 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:42,821 INFO L93 Difference]: Finished difference Result 1815 states and 2510 transitions. [2022-01-10 06:44:42,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:42,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:42,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:42,838 INFO L225 Difference]: With dead ends: 1815 [2022-01-10 06:44:42,838 INFO L226 Difference]: Without dead ends: 976 [2022-01-10 06:44:42,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:42,841 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 520 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:42,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 694 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-01-10 06:44:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 976. [2022-01-10 06:44:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 903 states have (on average 1.3621262458471761) internal successors, (1230), 905 states have internal predecessors, (1230), 43 states have call successors, (43), 28 states have call predecessors, (43), 29 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:44:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1317 transitions. [2022-01-10 06:44:42,872 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1317 transitions. Word has length 127 [2022-01-10 06:44:42,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:42,872 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1317 transitions. [2022-01-10 06:44:42,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:42,872 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1317 transitions. [2022-01-10 06:44:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:42,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:42,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:42,882 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 06:44:43,080 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 06:44:43,081 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1899118810, now seen corresponding path program 1 times [2022-01-10 06:44:43,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:43,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970955285] [2022-01-10 06:44:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:43,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:43,083 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 06:44:43,084 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 06:44:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:43,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:43,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:43,343 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 06:44:43,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:43,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:43,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970955285] [2022-01-10 06:44:43,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970955285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:43,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:43,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:43,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407942055] [2022-01-10 06:44:43,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:43,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:43,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:43,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:43,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:43,345 INFO L87 Difference]: Start difference. First operand 976 states and 1317 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:43,688 INFO L93 Difference]: Finished difference Result 2059 states and 2802 transitions. [2022-01-10 06:44:43,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:43,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:43,693 INFO L225 Difference]: With dead ends: 2059 [2022-01-10 06:44:43,693 INFO L226 Difference]: Without dead ends: 1098 [2022-01-10 06:44:43,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:43,696 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 513 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:43,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 687 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-01-10 06:44:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2022-01-10 06:44:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1019 states have (on average 1.3424926398429833) internal successors, (1368), 1021 states have internal predecessors, (1368), 45 states have call successors, (45), 32 states have call predecessors, (45), 33 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 06:44:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1459 transitions. [2022-01-10 06:44:43,745 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1459 transitions. Word has length 127 [2022-01-10 06:44:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:43,745 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 1459 transitions. [2022-01-10 06:44:43,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1459 transitions. [2022-01-10 06:44:43,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:43,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:43,747 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] [2022-01-10 06:44:43,769 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 06:44:43,954 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 06:44:43,955 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:43,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:43,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1304250470, now seen corresponding path program 1 times [2022-01-10 06:44:43,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:43,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951802527] [2022-01-10 06:44:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:43,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:43,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:43,960 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 06:44:43,962 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 06:44:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:44,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:44,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:44,199 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 06:44:44,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:44,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:44,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951802527] [2022-01-10 06:44:44,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951802527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:44,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:44,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:44,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223135775] [2022-01-10 06:44:44,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:44,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:44,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:44,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:44,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:44,201 INFO L87 Difference]: Start difference. First operand 1098 states and 1459 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:44,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:44,502 INFO L93 Difference]: Finished difference Result 2303 states and 3086 transitions. [2022-01-10 06:44:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:44,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:44,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:44,508 INFO L225 Difference]: With dead ends: 2303 [2022-01-10 06:44:44,508 INFO L226 Difference]: Without dead ends: 1220 [2022-01-10 06:44:44,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:44,510 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 506 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:44,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 680 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-01-10 06:44:44,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2022-01-10 06:44:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1135 states have (on average 1.3233480176211454) internal successors, (1502), 1137 states have internal predecessors, (1502), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:44:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1597 transitions. [2022-01-10 06:44:44,552 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1597 transitions. Word has length 127 [2022-01-10 06:44:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:44,553 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1597 transitions. [2022-01-10 06:44:44,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1597 transitions. [2022-01-10 06:44:44,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:44,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:44,554 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] [2022-01-10 06:44:44,563 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 06:44:44,763 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 06:44:44,764 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:44,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:44,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1030449691, now seen corresponding path program 1 times [2022-01-10 06:44:44,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:44,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553281798] [2022-01-10 06:44:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:44,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:44,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:44,766 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 06:44:44,766 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 06:44:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:44,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:44,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:44,995 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 06:44:44,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:44,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:44,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553281798] [2022-01-10 06:44:44,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553281798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:44,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:44,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:44,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877054711] [2022-01-10 06:44:44,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:44,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:44,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:44,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:44,996 INFO L87 Difference]: Start difference. First operand 1220 states and 1597 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:45,076 INFO L93 Difference]: Finished difference Result 3159 states and 4168 transitions. [2022-01-10 06:44:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:45,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:45,082 INFO L225 Difference]: With dead ends: 3159 [2022-01-10 06:44:45,082 INFO L226 Difference]: Without dead ends: 1955 [2022-01-10 06:44:45,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 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 06:44:45,086 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 290 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1511 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 06:44:45,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 1511 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2022-01-10 06:44:45,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1241. [2022-01-10 06:44:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1156 states have (on average 1.3114186851211074) internal successors, (1516), 1158 states have internal predecessors, (1516), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:44:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1611 transitions. [2022-01-10 06:44:45,141 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1611 transitions. Word has length 127 [2022-01-10 06:44:45,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:45,141 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1611 transitions. [2022-01-10 06:44:45,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1611 transitions. [2022-01-10 06:44:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:45,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:45,143 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] [2022-01-10 06:44:45,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 06:44:45,355 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 06:44:45,355 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:45,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:45,356 INFO L85 PathProgramCache]: Analyzing trace with hash 444173469, now seen corresponding path program 1 times [2022-01-10 06:44:45,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:45,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876519137] [2022-01-10 06:44:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:45,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:45,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:45,357 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 06:44:45,359 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 06:44:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:45,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:45,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:45,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:45,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:45,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876519137] [2022-01-10 06:44:45,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876519137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:45,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:45,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:45,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098654194] [2022-01-10 06:44:45,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:45,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:45,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:45,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:45,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:45,585 INFO L87 Difference]: Start difference. First operand 1241 states and 1611 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:45,669 INFO L93 Difference]: Finished difference Result 2648 states and 3464 transitions. [2022-01-10 06:44:45,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:45,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:45,674 INFO L225 Difference]: With dead ends: 2648 [2022-01-10 06:44:45,674 INFO L226 Difference]: Without dead ends: 1423 [2022-01-10 06:44:45,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 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 06:44:45,677 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 245 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1458 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 06:44:45,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1458 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-01-10 06:44:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1247. [2022-01-10 06:44:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1162 states have (on average 1.2994836488812394) internal successors, (1510), 1164 states have internal predecessors, (1510), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:44:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1605 transitions. [2022-01-10 06:44:45,730 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1605 transitions. Word has length 127 [2022-01-10 06:44:45,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:45,730 INFO L470 AbstractCegarLoop]: Abstraction has 1247 states and 1605 transitions. [2022-01-10 06:44:45,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:45,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1605 transitions. [2022-01-10 06:44:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:45,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:45,731 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] [2022-01-10 06:44:45,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:45,939 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 06:44:45,939 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:45,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:45,939 INFO L85 PathProgramCache]: Analyzing trace with hash -613664609, now seen corresponding path program 1 times [2022-01-10 06:44:45,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:45,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134282296] [2022-01-10 06:44:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:45,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:45,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:45,941 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 06:44:45,941 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 06:44:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:46,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:44:46,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:46,178 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 06:44:46,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:46,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:46,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134282296] [2022-01-10 06:44:46,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134282296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:46,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:46,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:44:46,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682058697] [2022-01-10 06:44:46,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:46,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:44:46,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:46,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:44:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:44:46,180 INFO L87 Difference]: Start difference. First operand 1247 states and 1605 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 06:44:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:46,291 INFO L93 Difference]: Finished difference Result 3561 states and 4594 transitions. [2022-01-10 06:44:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:44:46,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:46,297 INFO L225 Difference]: With dead ends: 3561 [2022-01-10 06:44:46,297 INFO L226 Difference]: Without dead ends: 2330 [2022-01-10 06:44:46,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 06:44:46,300 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 283 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 709 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 06:44:46,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 709 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2022-01-10 06:44:46,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2323. [2022-01-10 06:44:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2166 states have (on average 1.2894736842105263) internal successors, (2793), 2169 states have internal predecessors, (2793), 86 states have call successors, (86), 68 states have call predecessors, (86), 70 states have return successors, (88), 86 states have call predecessors, (88), 86 states have call successors, (88) [2022-01-10 06:44:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 2967 transitions. [2022-01-10 06:44:46,398 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 2967 transitions. Word has length 127 [2022-01-10 06:44:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:46,398 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 2967 transitions. [2022-01-10 06:44:46,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 06:44:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 2967 transitions. [2022-01-10 06:44:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:46,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:46,399 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] [2022-01-10 06:44:46,415 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 06:44:46,608 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 06:44:46,608 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1550691808, now seen corresponding path program 1 times [2022-01-10 06:44:46,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:46,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175623574] [2022-01-10 06:44:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:46,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:46,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:46,610 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 06:44:46,612 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 06:44:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:46,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:46,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:46,825 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 06:44:46,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:46,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:46,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175623574] [2022-01-10 06:44:46,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175623574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:46,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:46,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:46,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565245774] [2022-01-10 06:44:46,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:46,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:46,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:46,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:46,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:46,827 INFO L87 Difference]: Start difference. First operand 2323 states and 2967 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:46,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:46,979 INFO L93 Difference]: Finished difference Result 5708 states and 7365 transitions. [2022-01-10 06:44:46,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:46,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:46,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:46,989 INFO L225 Difference]: With dead ends: 5708 [2022-01-10 06:44:46,989 INFO L226 Difference]: Without dead ends: 3401 [2022-01-10 06:44:46,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 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 06:44:46,994 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 209 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1481 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 06:44:46,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1481 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2022-01-10 06:44:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 2365. [2022-01-10 06:44:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 2208 states have (on average 1.278532608695652) internal successors, (2823), 2211 states have internal predecessors, (2823), 86 states have call successors, (86), 68 states have call predecessors, (86), 70 states have return successors, (88), 86 states have call predecessors, (88), 86 states have call successors, (88) [2022-01-10 06:44:47,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 2997 transitions. [2022-01-10 06:44:47,135 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 2997 transitions. Word has length 127 [2022-01-10 06:44:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:47,135 INFO L470 AbstractCegarLoop]: Abstraction has 2365 states and 2997 transitions. [2022-01-10 06:44:47,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 2997 transitions. [2022-01-10 06:44:47,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:47,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:47,136 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] [2022-01-10 06:44:47,145 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 06:44:47,348 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 06:44:47,348 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:47,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:47,349 INFO L85 PathProgramCache]: Analyzing trace with hash 183412642, now seen corresponding path program 1 times [2022-01-10 06:44:47,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:47,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576503142] [2022-01-10 06:44:47,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:47,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:47,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:47,350 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 06:44:47,367 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 06:44:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:47,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:47,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:47,577 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 06:44:47,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:47,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:47,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576503142] [2022-01-10 06:44:47,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576503142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:47,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:47,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:47,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198604344] [2022-01-10 06:44:47,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:47,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:47,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:47,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:47,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:47,578 INFO L87 Difference]: Start difference. First operand 2365 states and 2997 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:47,723 INFO L93 Difference]: Finished difference Result 4840 states and 6187 transitions. [2022-01-10 06:44:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:47,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:47,732 INFO L225 Difference]: With dead ends: 4840 [2022-01-10 06:44:47,732 INFO L226 Difference]: Without dead ends: 2491 [2022-01-10 06:44:47,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 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 06:44:47,737 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 166 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1423 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 06:44:47,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 1423 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:47,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2022-01-10 06:44:47,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2371. [2022-01-10 06:44:47,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2214 states have (on average 1.2669376693766938) internal successors, (2805), 2217 states have internal predecessors, (2805), 86 states have call successors, (86), 68 states have call predecessors, (86), 70 states have return successors, (88), 86 states have call predecessors, (88), 86 states have call successors, (88) [2022-01-10 06:44:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 2979 transitions. [2022-01-10 06:44:47,861 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 2979 transitions. Word has length 127 [2022-01-10 06:44:47,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:47,861 INFO L470 AbstractCegarLoop]: Abstraction has 2371 states and 2979 transitions. [2022-01-10 06:44:47,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 2979 transitions. [2022-01-10 06:44:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:47,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:47,862 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] [2022-01-10 06:44:47,879 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 06:44:48,069 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 06:44:48,069 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:48,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash -309213532, now seen corresponding path program 1 times [2022-01-10 06:44:48,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:48,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798355316] [2022-01-10 06:44:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:48,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:48,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:48,071 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 06:44:48,072 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 06:44:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:48,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:48,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:48,276 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 06:44:48,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:48,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:48,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798355316] [2022-01-10 06:44:48,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798355316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:48,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:48,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:48,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553738449] [2022-01-10 06:44:48,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:48,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:48,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:48,279 INFO L87 Difference]: Start difference. First operand 2371 states and 2979 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:48,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:48,405 INFO L93 Difference]: Finished difference Result 4866 states and 6167 transitions. [2022-01-10 06:44:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:48,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:48,413 INFO L225 Difference]: With dead ends: 4866 [2022-01-10 06:44:48,414 INFO L226 Difference]: Without dead ends: 2511 [2022-01-10 06:44:48,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 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 06:44:48,418 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 88 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1393 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 06:44:48,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 1393 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:48,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2022-01-10 06:44:48,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2383. [2022-01-10 06:44:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2383 states, 2226 states have (on average 1.2556154537286612) internal successors, (2795), 2229 states have internal predecessors, (2795), 86 states have call successors, (86), 68 states have call predecessors, (86), 70 states have return successors, (88), 86 states have call predecessors, (88), 86 states have call successors, (88) [2022-01-10 06:44:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 2969 transitions. [2022-01-10 06:44:48,531 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 2969 transitions. Word has length 127 [2022-01-10 06:44:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:48,534 INFO L470 AbstractCegarLoop]: Abstraction has 2383 states and 2969 transitions. [2022-01-10 06:44:48,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 2969 transitions. [2022-01-10 06:44:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:48,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:48,535 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] [2022-01-10 06:44:48,542 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 06:44:48,742 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 06:44:48,743 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:48,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:48,743 INFO L85 PathProgramCache]: Analyzing trace with hash 951703718, now seen corresponding path program 1 times [2022-01-10 06:44:48,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:48,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768366833] [2022-01-10 06:44:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:48,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:48,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:48,744 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 06:44:48,745 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 06:44:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:48,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:48,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:48,957 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 06:44:48,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:48,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:48,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768366833] [2022-01-10 06:44:48,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768366833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:48,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:48,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:48,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854640778] [2022-01-10 06:44:48,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:48,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:48,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:48,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:48,958 INFO L87 Difference]: Start difference. First operand 2383 states and 2969 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:49,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:49,083 INFO L93 Difference]: Finished difference Result 4834 states and 6075 transitions. [2022-01-10 06:44:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:49,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:49,090 INFO L225 Difference]: With dead ends: 4834 [2022-01-10 06:44:49,090 INFO L226 Difference]: Without dead ends: 2467 [2022-01-10 06:44:49,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 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 06:44:49,093 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 49 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1378 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 06:44:49,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1378 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:49,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-01-10 06:44:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2395. [2022-01-10 06:44:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 2238 states have (on average 1.244414655942806) internal successors, (2785), 2241 states have internal predecessors, (2785), 86 states have call successors, (86), 68 states have call predecessors, (86), 70 states have return successors, (88), 86 states have call predecessors, (88), 86 states have call successors, (88) [2022-01-10 06:44:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 2959 transitions. [2022-01-10 06:44:49,219 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 2959 transitions. Word has length 127 [2022-01-10 06:44:49,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:49,220 INFO L470 AbstractCegarLoop]: Abstraction has 2395 states and 2959 transitions. [2022-01-10 06:44:49,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 2959 transitions. [2022-01-10 06:44:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:49,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:49,221 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] [2022-01-10 06:44:49,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:49,421 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 06:44:49,421 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1076882392, now seen corresponding path program 1 times [2022-01-10 06:44:49,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:49,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68502324] [2022-01-10 06:44:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:49,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:49,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:49,423 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 06:44:49,424 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 06:44:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:49,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:49,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:49,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:49,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:49,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68502324] [2022-01-10 06:44:49,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68502324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:49,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:49,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:49,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165632361] [2022-01-10 06:44:49,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:49,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:49,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:49,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:49,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:49,637 INFO L87 Difference]: Start difference. First operand 2395 states and 2959 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:49,787 INFO L93 Difference]: Finished difference Result 4802 states and 5983 transitions. [2022-01-10 06:44:49,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:49,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:49,802 INFO L225 Difference]: With dead ends: 4802 [2022-01-10 06:44:49,803 INFO L226 Difference]: Without dead ends: 2423 [2022-01-10 06:44:49,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 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 06:44:49,809 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 10 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1363 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 06:44:49,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1363 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2022-01-10 06:44:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2407. [2022-01-10 06:44:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2250 states have (on average 1.2333333333333334) internal successors, (2775), 2253 states have internal predecessors, (2775), 86 states have call successors, (86), 68 states have call predecessors, (86), 70 states have return successors, (88), 86 states have call predecessors, (88), 86 states have call successors, (88) [2022-01-10 06:44:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 2949 transitions. [2022-01-10 06:44:49,963 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 2949 transitions. Word has length 127 [2022-01-10 06:44:49,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:49,963 INFO L470 AbstractCegarLoop]: Abstraction has 2407 states and 2949 transitions. [2022-01-10 06:44:49,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 06:44:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 2949 transitions. [2022-01-10 06:44:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:49,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:49,965 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] [2022-01-10 06:44:49,972 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 06:44:50,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:50,172 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:50,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:50,173 INFO L85 PathProgramCache]: Analyzing trace with hash -183396054, now seen corresponding path program 1 times [2022-01-10 06:44:50,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:50,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80848517] [2022-01-10 06:44:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:50,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:50,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:50,174 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:50,175 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 06:44:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:50,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:44:50,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:50,425 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 06:44:50,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:50,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:50,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80848517] [2022-01-10 06:44:50,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80848517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:50,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:50,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:50,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072461401] [2022-01-10 06:44:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:50,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:50,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:50,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:50,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:50,426 INFO L87 Difference]: Start difference. First operand 2407 states and 2949 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:50,724 INFO L93 Difference]: Finished difference Result 4799 states and 5886 transitions. [2022-01-10 06:44:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:50,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2022-01-10 06:44:50,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:50,730 INFO L225 Difference]: With dead ends: 4799 [2022-01-10 06:44:50,730 INFO L226 Difference]: Without dead ends: 2407 [2022-01-10 06:44:50,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 06:44:50,734 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 376 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:50,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 675 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:50,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2022-01-10 06:44:50,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2407. [2022-01-10 06:44:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2250 states have (on average 1.227111111111111) internal successors, (2761), 2253 states have internal predecessors, (2761), 86 states have call successors, (86), 68 states have call predecessors, (86), 70 states have return successors, (88), 86 states have call predecessors, (88), 86 states have call successors, (88) [2022-01-10 06:44:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 2935 transitions. [2022-01-10 06:44:50,894 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 2935 transitions. Word has length 127 [2022-01-10 06:44:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:50,894 INFO L470 AbstractCegarLoop]: Abstraction has 2407 states and 2935 transitions. [2022-01-10 06:44:50,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 2935 transitions. [2022-01-10 06:44:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:50,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:50,895 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] [2022-01-10 06:44:50,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:51,102 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 06:44:51,103 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:51,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:51,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1555203352, now seen corresponding path program 1 times [2022-01-10 06:44:51,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:51,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893219786] [2022-01-10 06:44:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:51,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:51,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:51,105 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 06:44:51,106 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 06:44:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:51,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:44:51,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:51,375 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 06:44:51,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:51,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:51,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893219786] [2022-01-10 06:44:51,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893219786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:51,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:51,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:51,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270238551] [2022-01-10 06:44:51,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:51,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:51,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:51,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:51,376 INFO L87 Difference]: Start difference. First operand 2407 states and 2935 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:51,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:51,864 INFO L93 Difference]: Finished difference Result 5077 states and 6199 transitions. [2022-01-10 06:44:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:51,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2022-01-10 06:44:51,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:51,871 INFO L225 Difference]: With dead ends: 5077 [2022-01-10 06:44:51,871 INFO L226 Difference]: Without dead ends: 2685 [2022-01-10 06:44:51,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:44:51,876 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 474 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:51,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 713 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2022-01-10 06:44:52,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2607. [2022-01-10 06:44:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2607 states, 2446 states have (on average 1.2089125102207685) internal successors, (2957), 2449 states have internal predecessors, (2957), 86 states have call successors, (86), 72 states have call predecessors, (86), 74 states have return successors, (88), 86 states have call predecessors, (88), 86 states have call successors, (88) [2022-01-10 06:44:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2607 states to 2607 states and 3131 transitions. [2022-01-10 06:44:52,017 INFO L78 Accepts]: Start accepts. Automaton has 2607 states and 3131 transitions. Word has length 127 [2022-01-10 06:44:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:52,017 INFO L470 AbstractCegarLoop]: Abstraction has 2607 states and 3131 transitions. [2022-01-10 06:44:52,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2607 states and 3131 transitions. [2022-01-10 06:44:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:44:52,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:52,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:44:52,033 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 06:44:52,225 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 06:44:52,226 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:52,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1280443738, now seen corresponding path program 1 times [2022-01-10 06:44:52,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:52,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228239775] [2022-01-10 06:44:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:52,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:52,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:52,227 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 06:44:52,228 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 06:44:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:52,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:52,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:52,518 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 06:44:52,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:52,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:52,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228239775] [2022-01-10 06:44:52,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228239775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:52,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:52,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:52,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373171099] [2022-01-10 06:44:52,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:52,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:44:52,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:52,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:44:52,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:44:52,520 INFO L87 Difference]: Start difference. First operand 2607 states and 3131 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:53,046 INFO L93 Difference]: Finished difference Result 8290 states and 9924 transitions. [2022-01-10 06:44:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:53,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-01-10 06:44:53,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:53,057 INFO L225 Difference]: With dead ends: 8290 [2022-01-10 06:44:53,057 INFO L226 Difference]: Without dead ends: 5700 [2022-01-10 06:44:53,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 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 06:44:53,060 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 469 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:53,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 833 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2022-01-10 06:44:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5580. [2022-01-10 06:44:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5580 states, 5252 states have (on average 1.1985910129474486) internal successors, (6295), 5271 states have internal predecessors, (6295), 163 states have call successors, (163), 136 states have call predecessors, (163), 164 states have return successors, (205), 174 states have call predecessors, (205), 163 states have call successors, (205) [2022-01-10 06:44:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5580 states to 5580 states and 6663 transitions. [2022-01-10 06:44:53,389 INFO L78 Accepts]: Start accepts. Automaton has 5580 states and 6663 transitions. Word has length 127 [2022-01-10 06:44:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:53,390 INFO L470 AbstractCegarLoop]: Abstraction has 5580 states and 6663 transitions. [2022-01-10 06:44:53,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 06:44:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5580 states and 6663 transitions. [2022-01-10 06:44:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:44:53,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:53,391 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] [2022-01-10 06:44:53,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:53,598 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 06:44:53,599 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:53,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:53,599 INFO L85 PathProgramCache]: Analyzing trace with hash -638061342, now seen corresponding path program 1 times [2022-01-10 06:44:53,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:53,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541450049] [2022-01-10 06:44:53,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:53,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:53,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:53,608 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 06:44:53,609 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 06:44:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:53,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:53,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:44:53,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:53,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:53,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541450049] [2022-01-10 06:44:53,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541450049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:53,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:53,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:53,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273339781] [2022-01-10 06:44:53,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:53,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:44:53,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:44:53,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:44:53,871 INFO L87 Difference]: Start difference. First operand 5580 states and 6663 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 06:44:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:54,606 INFO L93 Difference]: Finished difference Result 16174 states and 19300 transitions. [2022-01-10 06:44:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:54,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 128 [2022-01-10 06:44:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:54,628 INFO L225 Difference]: With dead ends: 16174 [2022-01-10 06:44:54,628 INFO L226 Difference]: Without dead ends: 10622 [2022-01-10 06:44:54,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:54,637 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 430 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:54,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1032 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10622 states. [2022-01-10 06:44:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10622 to 10619. [2022-01-10 06:44:55,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10619 states, 9993 states have (on average 1.1949364555188633) internal successors, (11941), 10033 states have internal predecessors, (11941), 309 states have call successors, (309), 256 states have call predecessors, (309), 316 states have return successors, (409), 333 states have call predecessors, (409), 309 states have call successors, (409) [2022-01-10 06:44:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10619 states to 10619 states and 12659 transitions. [2022-01-10 06:44:55,262 INFO L78 Accepts]: Start accepts. Automaton has 10619 states and 12659 transitions. Word has length 128 [2022-01-10 06:44:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:55,263 INFO L470 AbstractCegarLoop]: Abstraction has 10619 states and 12659 transitions. [2022-01-10 06:44:55,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 06:44:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 10619 states and 12659 transitions. [2022-01-10 06:44:55,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:44:55,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:55,265 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] [2022-01-10 06:44:55,283 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 06:44:55,472 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 06:44:55,473 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:55,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1730696544, now seen corresponding path program 1 times [2022-01-10 06:44:55,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:55,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501953245] [2022-01-10 06:44:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:55,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:55,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:55,475 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 06:44:55,477 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 06:44:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:55,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:44:55,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:55,672 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 06:44:55,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:55,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:55,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501953245] [2022-01-10 06:44:55,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501953245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:55,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:55,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:44:55,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754949181] [2022-01-10 06:44:55,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:55,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:44:55,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:55,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:44:55,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:44:55,673 INFO L87 Difference]: Start difference. First operand 10619 states and 12659 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 06:44:56,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:56,326 INFO L93 Difference]: Finished difference Result 21190 states and 25234 transitions. [2022-01-10 06:44:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:44:56,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 128 [2022-01-10 06:44:56,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:56,347 INFO L225 Difference]: With dead ends: 21190 [2022-01-10 06:44:56,347 INFO L226 Difference]: Without dead ends: 10599 [2022-01-10 06:44:56,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:44:56,362 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 329 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 336 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 06:44:56,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 336 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10599 states. [2022-01-10 06:44:56,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10599 to 10599. [2022-01-10 06:44:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10599 states, 9979 states have (on average 1.1940074155727027) internal successors, (11915), 10017 states have internal predecessors, (11915), 303 states have call successors, (303), 256 states have call predecessors, (303), 316 states have return successors, (403), 327 states have call predecessors, (403), 303 states have call successors, (403) [2022-01-10 06:44:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10599 states to 10599 states and 12621 transitions. [2022-01-10 06:44:56,999 INFO L78 Accepts]: Start accepts. Automaton has 10599 states and 12621 transitions. Word has length 128 [2022-01-10 06:44:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:56,999 INFO L470 AbstractCegarLoop]: Abstraction has 10599 states and 12621 transitions. [2022-01-10 06:44:56,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 06:44:56,999 INFO L276 IsEmpty]: Start isEmpty. Operand 10599 states and 12621 transitions. [2022-01-10 06:44:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:44:57,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:57,000 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] [2022-01-10 06:44:57,007 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 06:44:57,207 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 06:44:57,207 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash -358831555, now seen corresponding path program 1 times [2022-01-10 06:44:57,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:57,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445169404] [2022-01-10 06:44:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:57,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:57,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:57,211 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 06:44:57,239 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 06:44:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:57,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:57,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:57,527 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 06:44:57,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:57,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:57,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445169404] [2022-01-10 06:44:57,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445169404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:57,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:57,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:57,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500872787] [2022-01-10 06:44:57,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:57,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:44:57,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:57,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:44:57,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:44:57,529 INFO L87 Difference]: Start difference. First operand 10599 states and 12621 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 06:44:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:58,933 INFO L93 Difference]: Finished difference Result 31210 states and 37140 transitions. [2022-01-10 06:44:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:58,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 129 [2022-01-10 06:44:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:58,981 INFO L225 Difference]: With dead ends: 31210 [2022-01-10 06:44:58,981 INFO L226 Difference]: Without dead ends: 20639 [2022-01-10 06:44:59,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:59,001 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 421 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:59,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 997 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20639 states. [2022-01-10 06:45:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20639 to 20636. [2022-01-10 06:45:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20636 states, 19424 states have (on average 1.1910523064250411) internal successors, (23135), 19503 states have internal predecessors, (23135), 589 states have call successors, (589), 496 states have call predecessors, (589), 622 states have return successors, (807), 640 states have call predecessors, (807), 589 states have call successors, (807) [2022-01-10 06:45:00,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20636 states to 20636 states and 24531 transitions. [2022-01-10 06:45:00,349 INFO L78 Accepts]: Start accepts. Automaton has 20636 states and 24531 transitions. Word has length 129 [2022-01-10 06:45:00,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:00,349 INFO L470 AbstractCegarLoop]: Abstraction has 20636 states and 24531 transitions. [2022-01-10 06:45:00,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 06:45:00,349 INFO L276 IsEmpty]: Start isEmpty. Operand 20636 states and 24531 transitions. [2022-01-10 06:45:00,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:45:00,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:00,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:45:00,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:00,552 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 06:45:00,552 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:00,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:00,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1451466757, now seen corresponding path program 1 times [2022-01-10 06:45:00,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:00,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935190680] [2022-01-10 06:45:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:00,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:00,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:00,554 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 06:45:00,554 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 06:45:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:00,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:45:00,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:00,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:00,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:00,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935190680] [2022-01-10 06:45:00,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935190680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:00,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:00,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:45:00,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513852580] [2022-01-10 06:45:00,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:00,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:45:00,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:00,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:45:00,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:00,803 INFO L87 Difference]: Start difference. First operand 20636 states and 24531 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 06:45:01,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:01,729 INFO L93 Difference]: Finished difference Result 36342 states and 43201 transitions. [2022-01-10 06:45:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:45:01,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 129 [2022-01-10 06:45:01,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:01,772 INFO L225 Difference]: With dead ends: 36342 [2022-01-10 06:45:01,772 INFO L226 Difference]: Without dead ends: 15734 [2022-01-10 06:45:01,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:01,803 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 327 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 335 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 06:45:01,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 335 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:01,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15734 states. [2022-01-10 06:45:02,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15734 to 15734. [2022-01-10 06:45:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15734 states, 14816 states have (on average 1.1922246220302375) internal successors, (17664), 14876 states have internal predecessors, (17664), 443 states have call successors, (443), 376 states have call predecessors, (443), 474 states have return successors, (607), 483 states have call predecessors, (607), 443 states have call successors, (607) [2022-01-10 06:45:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15734 states to 15734 states and 18714 transitions. [2022-01-10 06:45:02,897 INFO L78 Accepts]: Start accepts. Automaton has 15734 states and 18714 transitions. Word has length 129 [2022-01-10 06:45:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:02,898 INFO L470 AbstractCegarLoop]: Abstraction has 15734 states and 18714 transitions. [2022-01-10 06:45:02,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 06:45:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 15734 states and 18714 transitions. [2022-01-10 06:45:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:45:02,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:02,899 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] [2022-01-10 06:45:02,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:03,100 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 06:45:03,100 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:03,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash -852556610, now seen corresponding path program 1 times [2022-01-10 06:45:03,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:03,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395183578] [2022-01-10 06:45:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:03,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:03,102 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 06:45:03,103 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 06:45:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:03,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:03,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:03,370 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 06:45:03,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:03,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:03,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395183578] [2022-01-10 06:45:03,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395183578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:03,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:03,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:03,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732954769] [2022-01-10 06:45:03,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:03,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:03,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:03,377 INFO L87 Difference]: Start difference. First operand 15734 states and 18714 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 06:45:05,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:05,375 INFO L93 Difference]: Finished difference Result 45450 states and 54044 transitions. [2022-01-10 06:45:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:05,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 130 [2022-01-10 06:45:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:05,453 INFO L225 Difference]: With dead ends: 45450 [2022-01-10 06:45:05,453 INFO L226 Difference]: Without dead ends: 29744 [2022-01-10 06:45:05,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:05,478 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 413 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:05,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 973 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:05,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29744 states. [2022-01-10 06:45:07,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29744 to 29741. [2022-01-10 06:45:07,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29741 states, 27995 states have (on average 1.1903554206108233) internal successors, (33324), 28119 states have internal predecessors, (33324), 837 states have call successors, (837), 704 states have call predecessors, (837), 908 states have return successors, (1179), 921 states have call predecessors, (1179), 837 states have call successors, (1179) [2022-01-10 06:45:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29741 states to 29741 states and 35340 transitions. [2022-01-10 06:45:07,381 INFO L78 Accepts]: Start accepts. Automaton has 29741 states and 35340 transitions. Word has length 130 [2022-01-10 06:45:07,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:07,381 INFO L470 AbstractCegarLoop]: Abstraction has 29741 states and 35340 transitions. [2022-01-10 06:45:07,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 06:45:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 29741 states and 35340 transitions. [2022-01-10 06:45:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:45:07,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:07,384 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] [2022-01-10 06:45:07,391 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 06:45:07,584 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 06:45:07,585 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:07,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:07,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1945191812, now seen corresponding path program 1 times [2022-01-10 06:45:07,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:07,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235289515] [2022-01-10 06:45:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:07,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:07,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:07,586 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 06:45:07,588 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 06:45:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:07,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:45:07,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:07,786 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 06:45:07,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:07,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:07,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235289515] [2022-01-10 06:45:07,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235289515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:07,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:07,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:45:07,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437857394] [2022-01-10 06:45:07,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:07,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:45:07,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:07,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:45:07,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:07,788 INFO L87 Difference]: Start difference. First operand 29741 states and 35340 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 06:45:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:09,747 INFO L93 Difference]: Finished difference Result 59438 states and 70608 transitions. [2022-01-10 06:45:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:45:09,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 130 [2022-01-10 06:45:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:09,809 INFO L225 Difference]: With dead ends: 59438 [2022-01-10 06:45:09,809 INFO L226 Difference]: Without dead ends: 29725 [2022-01-10 06:45:09,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:09,848 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 325 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 334 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 06:45:09,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 334 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29725 states. [2022-01-10 06:45:11,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29725 to 29725. [2022-01-10 06:45:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29725 states, 27985 states have (on average 1.1901375737001965) internal successors, (33306), 28107 states have internal predecessors, (33306), 831 states have call successors, (831), 704 states have call predecessors, (831), 908 states have return successors, (1173), 915 states have call predecessors, (1173), 831 states have call successors, (1173) [2022-01-10 06:45:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29725 states to 29725 states and 35310 transitions. [2022-01-10 06:45:11,915 INFO L78 Accepts]: Start accepts. Automaton has 29725 states and 35310 transitions. Word has length 130 [2022-01-10 06:45:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:11,915 INFO L470 AbstractCegarLoop]: Abstraction has 29725 states and 35310 transitions. [2022-01-10 06:45:11,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 06:45:11,915 INFO L276 IsEmpty]: Start isEmpty. Operand 29725 states and 35310 transitions. [2022-01-10 06:45:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:45:11,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:11,917 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] [2022-01-10 06:45:11,935 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 06:45:12,124 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 06:45:12,124 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:12,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1767172511, now seen corresponding path program 1 times [2022-01-10 06:45:12,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:12,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301861979] [2022-01-10 06:45:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:12,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:12,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:12,126 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 06:45:12,127 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 06:45:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:12,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:12,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:12,402 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 06:45:12,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:12,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:12,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301861979] [2022-01-10 06:45:12,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301861979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:12,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:12,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:12,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201941415] [2022-01-10 06:45:12,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:12,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:12,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:12,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:12,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:12,403 INFO L87 Difference]: Start difference. First operand 29725 states and 35310 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 06:45:16,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:16,548 INFO L93 Difference]: Finished difference Result 94849 states and 112286 transitions. [2022-01-10 06:45:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:16,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2022-01-10 06:45:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:16,708 INFO L225 Difference]: With dead ends: 94849 [2022-01-10 06:45:16,708 INFO L226 Difference]: Without dead ends: 65152 [2022-01-10 06:45:16,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 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 06:45:16,755 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 441 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:16,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 765 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:16,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65152 states. [2022-01-10 06:45:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65152 to 63325. [2022-01-10 06:45:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63325 states, 59497 states have (on average 1.183992470208582) internal successors, (70444), 60043 states have internal predecessors, (70444), 1559 states have call successors, (1559), 1312 states have call predecessors, (1559), 2268 states have return successors, (2833), 1971 states have call predecessors, (2833), 1559 states have call successors, (2833) [2022-01-10 06:45:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63325 states to 63325 states and 74836 transitions. [2022-01-10 06:45:21,384 INFO L78 Accepts]: Start accepts. Automaton has 63325 states and 74836 transitions. Word has length 131 [2022-01-10 06:45:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:21,385 INFO L470 AbstractCegarLoop]: Abstraction has 63325 states and 74836 transitions. [2022-01-10 06:45:21,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 06:45:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 63325 states and 74836 transitions. [2022-01-10 06:45:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:45:21,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:21,387 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] [2022-01-10 06:45:21,395 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 06:45:21,595 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 06:45:21,595 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:21,596 INFO L85 PathProgramCache]: Analyzing trace with hash 131632282, now seen corresponding path program 1 times [2022-01-10 06:45:21,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:21,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174645033] [2022-01-10 06:45:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:21,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:21,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:21,597 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 06:45:21,598 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 06:45:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:21,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:21,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:21,851 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 06:45:21,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:21,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:21,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174645033] [2022-01-10 06:45:21,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174645033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:21,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:21,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:21,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748896035] [2022-01-10 06:45:21,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:21,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:21,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:21,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:21,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:21,853 INFO L87 Difference]: Start difference. First operand 63325 states and 74836 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 06:45:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:29,367 INFO L93 Difference]: Finished difference Result 180871 states and 213574 transitions. [2022-01-10 06:45:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:29,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 132 [2022-01-10 06:45:29,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:29,770 INFO L225 Difference]: With dead ends: 180871 [2022-01-10 06:45:29,770 INFO L226 Difference]: Without dead ends: 117574 [2022-01-10 06:45:29,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 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 06:45:29,964 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 400 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:29,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 901 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:30,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117574 states. [2022-01-10 06:45:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117574 to 117571. [2022-01-10 06:45:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117571 states, 110349 states have (on average 1.1809622198660614) internal successors, (130318), 111417 states have internal predecessors, (130318), 2925 states have call successors, (2925), 2432 states have call predecessors, (2925), 4296 states have return successors, (5431), 3725 states have call predecessors, (5431), 2925 states have call successors, (5431) [2022-01-10 06:45:37,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117571 states to 117571 states and 138674 transitions. [2022-01-10 06:45:37,645 INFO L78 Accepts]: Start accepts. Automaton has 117571 states and 138674 transitions. Word has length 132 [2022-01-10 06:45:37,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:37,645 INFO L470 AbstractCegarLoop]: Abstraction has 117571 states and 138674 transitions. [2022-01-10 06:45:37,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 06:45:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 117571 states and 138674 transitions. [2022-01-10 06:45:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:45:37,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:37,648 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] [2022-01-10 06:45:37,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:37,855 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 06:45:37,855 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:37,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:37,855 INFO L85 PathProgramCache]: Analyzing trace with hash -961002920, now seen corresponding path program 1 times [2022-01-10 06:45:37,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:37,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563580122] [2022-01-10 06:45:37,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:37,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:37,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:37,857 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 06:45:37,857 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 06:45:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:37,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:45:37,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:38,061 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 06:45:38,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:38,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:38,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563580122] [2022-01-10 06:45:38,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563580122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:38,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:38,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:45:38,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380182361] [2022-01-10 06:45:38,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:38,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:45:38,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:38,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:45:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:38,063 INFO L87 Difference]: Start difference. First operand 117571 states and 138674 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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)