/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:07:35,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:07:35,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:07:35,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:07:35,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:07:35,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:07:35,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:07:35,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:07:35,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:07:35,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:07:35,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:07:35,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:07:35,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:07:35,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:07:35,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:07:35,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:07:35,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:07:35,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:07:35,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:07:35,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:07:35,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:07:35,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:07:35,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:07:35,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:07:35,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:07:35,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:07:35,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:07:35,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:07:35,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:07:35,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 08:07:35,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:07:35,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:07:35,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:07:35,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:07:35,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:07:35,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:07:35,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:07:35,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:07:35,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:07:35,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:07:35,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:07:35,502 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 08:07:35,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:07:35,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:07:35,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:07:35,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:07:35,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:07:35,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:07:35,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:07:35,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:07:35,538 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:07:35,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:07:35,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:07:35,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:07:35,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:07:35,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:07:35,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:07:35,540 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:07:35,540 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:07:35,540 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:07:35,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:07:35,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:07:35,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:07:35,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:07:35,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:07:35,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:07:35,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:07:35,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:07:35,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:07:35,542 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:07:35,542 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:07:35,542 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:07:35,542 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:07:35,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:07:35,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:07:35,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:07:35,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:07:35,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:07:35,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:07:35,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:07:35,767 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:07:35,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-01-10 08:07:35,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6f30ac1/c5660f1caeb646239034b380cfe5289b/FLAG2fe8b2b9f [2022-01-10 08:07:36,516 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:07:36,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-01-10 08:07:36,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6f30ac1/c5660f1caeb646239034b380cfe5289b/FLAG2fe8b2b9f [2022-01-10 08:07:36,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6f30ac1/c5660f1caeb646239034b380cfe5289b [2022-01-10 08:07:36,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:07:36,631 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:07:36,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:07:36,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:07:36,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:07:36,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:07:36" (1/1) ... [2022-01-10 08:07:36,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2181b284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:36, skipping insertion in model container [2022-01-10 08:07:36,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:07:36" (1/1) ... [2022-01-10 08:07:36,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:07:36,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:07:37,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[11668,11681] [2022-01-10 08:07:37,161 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[18604,18617] [2022-01-10 08:07:37,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:07:37,907 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:07:37,959 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[11668,11681] [2022-01-10 08:07:37,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[18604,18617] [2022-01-10 08:07:38,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:07:38,357 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:07:38,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38 WrapperNode [2022-01-10 08:07:38,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:07:38,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:07:38,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:07:38,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:07:38,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (1/1) ... [2022-01-10 08:07:38,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (1/1) ... [2022-01-10 08:07:38,573 INFO L137 Inliner]: procedures = 38, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5064 [2022-01-10 08:07:38,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:07:38,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:07:38,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:07:38,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:07:38,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (1/1) ... [2022-01-10 08:07:38,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (1/1) ... [2022-01-10 08:07:38,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (1/1) ... [2022-01-10 08:07:38,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (1/1) ... [2022-01-10 08:07:38,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (1/1) ... [2022-01-10 08:07:38,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (1/1) ... [2022-01-10 08:07:38,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (1/1) ... [2022-01-10 08:07:38,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:07:38,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:07:38,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:07:38,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:07:38,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (1/1) ... [2022-01-10 08:07:38,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:07:38,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:07:38,921 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 08:07:38,936 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 08:07:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:07:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:07:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:07:38,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:07:39,103 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:07:39,104 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:08:04,270 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:08:04,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:08:04,289 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:08:04,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:08:04 BoogieIcfgContainer [2022-01-10 08:08:04,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:08:04,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:08:04,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:08:04,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:08:04,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:07:36" (1/3) ... [2022-01-10 08:08:04,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4faa846a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:08:04, skipping insertion in model container [2022-01-10 08:08:04,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:38" (2/3) ... [2022-01-10 08:08:04,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4faa846a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:08:04, skipping insertion in model container [2022-01-10 08:08:04,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:08:04" (3/3) ... [2022-01-10 08:08:04,299 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-01-10 08:08:04,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:08:04,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:08:04,349 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:08:04,355 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 08:08:04,356 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:08:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 08:08:04,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:08:04,400 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] [2022-01-10 08:08:04,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:08:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:08:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1083425478, now seen corresponding path program 1 times [2022-01-10 08:08:04,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:08:04,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517763174] [2022-01-10 08:08:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:08:04,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:08:04,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:08:04,420 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 08:08:04,423 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 08:08:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:08:04,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 08:08:04,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:08:04,645 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 08:08:04,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:08:04,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:08:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517763174] [2022-01-10 08:08:04,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517763174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:08:04,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:08:04,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:08:04,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374454392] [2022-01-10 08:08:04,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:08:04,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:08:04,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:08:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:08:04,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:08:04,679 INFO L87 Difference]: Start difference. First operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:04,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:08:04,793 INFO L93 Difference]: Finished difference Result 1783 states and 3378 transitions. [2022-01-10 08:08:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:08:04,795 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-10 08:08:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:08:04,813 INFO L225 Difference]: With dead ends: 1783 [2022-01-10 08:08:04,814 INFO L226 Difference]: Without dead ends: 845 [2022-01-10 08:08:04,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:08:04,823 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:08:04,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:08:04,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-01-10 08:08:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2022-01-10 08:08:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8884934756820877) internal successors, (1592), 844 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1592 transitions. [2022-01-10 08:08:04,899 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1592 transitions. Word has length 34 [2022-01-10 08:08:04,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:08:04,900 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1592 transitions. [2022-01-10 08:08:04,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:04,900 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1592 transitions. [2022-01-10 08:08:04,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 08:08:04,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:08:04,902 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] [2022-01-10 08:08:04,918 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 08:08:05,111 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 08:08:05,147 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:08:05,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:08:05,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1592898568, now seen corresponding path program 1 times [2022-01-10 08:08:05,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:08:05,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110084013] [2022-01-10 08:08:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:08:05,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:08:05,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:08:05,153 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 08:08:05,158 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 08:08:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:08:05,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:08:05,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:08:05,421 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 08:08:05,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:08:05,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:08:05,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110084013] [2022-01-10 08:08:05,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110084013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:08:05,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:08:05,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:08:05,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477279177] [2022-01-10 08:08:05,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:08:05,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:08:05,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:08:05,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:08:05,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:08:05,425 INFO L87 Difference]: Start difference. First operand 845 states and 1592 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:05,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:08:05,556 INFO L93 Difference]: Finished difference Result 903 states and 1681 transitions. [2022-01-10 08:08:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:08:05,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-10 08:08:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:08:05,562 INFO L225 Difference]: With dead ends: 903 [2022-01-10 08:08:05,562 INFO L226 Difference]: Without dead ends: 845 [2022-01-10 08:08:05,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:08:05,565 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 3 mSDsluCounter, 4736 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:08:05,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6326 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:08:05,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-01-10 08:08:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2022-01-10 08:08:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8517200474495847) internal successors, (1561), 844 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1561 transitions. [2022-01-10 08:08:05,602 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1561 transitions. Word has length 34 [2022-01-10 08:08:05,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:08:05,602 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1561 transitions. [2022-01-10 08:08:05,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:05,603 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1561 transitions. [2022-01-10 08:08:05,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 08:08:05,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:08:05,605 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] [2022-01-10 08:08:05,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:08:05,813 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 08:08:05,814 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:08:05,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:08:05,815 INFO L85 PathProgramCache]: Analyzing trace with hash 566221253, now seen corresponding path program 1 times [2022-01-10 08:08:05,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:08:05,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653518610] [2022-01-10 08:08:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:08:05,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:08:05,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:08:05,818 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 08:08:05,820 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 08:08:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:08:05,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:08:05,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:08:06,145 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 08:08:06,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:08:06,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:08:06,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653518610] [2022-01-10 08:08:06,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653518610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:08:06,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:08:06,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:08:06,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452654365] [2022-01-10 08:08:06,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:08:06,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:08:06,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:08:06,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:08:06,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:08:06,149 INFO L87 Difference]: Start difference. First operand 845 states and 1561 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:08:38,956 INFO L93 Difference]: Finished difference Result 2349 states and 4434 transitions. [2022-01-10 08:08:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:08:38,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 08:08:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:08:38,963 INFO L225 Difference]: With dead ends: 2349 [2022-01-10 08:08:38,963 INFO L226 Difference]: Without dead ends: 1596 [2022-01-10 08:08:38,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 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 08:08:38,967 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 841 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:08:38,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 346 Invalid, 2976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [512 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 32.6s Time] [2022-01-10 08:08:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-01-10 08:08:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2022-01-10 08:08:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.751568381430364) internal successors, (2792), 1595 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2792 transitions. [2022-01-10 08:08:39,022 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2792 transitions. Word has length 60 [2022-01-10 08:08:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:08:39,022 INFO L470 AbstractCegarLoop]: Abstraction has 1596 states and 2792 transitions. [2022-01-10 08:08:39,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:39,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2792 transitions. [2022-01-10 08:08:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 08:08:39,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:08:39,024 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] [2022-01-10 08:08:39,033 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 08:08:39,233 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 08:08:39,234 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:08:39,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:08:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1337087153, now seen corresponding path program 1 times [2022-01-10 08:08:39,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:08:39,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841402474] [2022-01-10 08:08:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:08:39,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:08:39,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:08:39,236 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 08:08:39,237 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 08:08:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:08:39,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:08:39,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:08:39,508 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 08:08:39,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:08:39,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:08:39,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841402474] [2022-01-10 08:08:39,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841402474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:08:39,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:08:39,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:08:39,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140777973] [2022-01-10 08:08:39,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:08:39,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:08:39,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:08:39,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:08:39,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:08:39,517 INFO L87 Difference]: Start difference. First operand 1596 states and 2792 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:39,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:08:39,560 INFO L93 Difference]: Finished difference Result 1698 states and 2952 transitions. [2022-01-10 08:08:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:08:39,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 08:08:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:08:39,570 INFO L225 Difference]: With dead ends: 1698 [2022-01-10 08:08:39,570 INFO L226 Difference]: Without dead ends: 1644 [2022-01-10 08:08:39,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 08:08:39,577 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1498 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:08:39,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1676 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:08:39,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-01-10 08:08:39,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1642. [2022-01-10 08:08:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.7469512195121952) internal successors, (2865), 1641 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2865 transitions. [2022-01-10 08:08:39,620 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2865 transitions. Word has length 64 [2022-01-10 08:08:39,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:08:39,621 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 2865 transitions. [2022-01-10 08:08:39,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:39,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2865 transitions. [2022-01-10 08:08:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 08:08:39,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:08:39,628 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] [2022-01-10 08:08:39,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 08:08:39,836 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 08:08:39,837 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:08:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:08:39,838 INFO L85 PathProgramCache]: Analyzing trace with hash -119101755, now seen corresponding path program 1 times [2022-01-10 08:08:39,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:08:39,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783028203] [2022-01-10 08:08:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:08:39,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:08:39,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:08:39,841 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 08:08:39,843 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 08:08:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:08:39,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:08:39,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:08:41,219 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 08:08:41,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:08:41,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:08:41,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783028203] [2022-01-10 08:08:41,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783028203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:08:41,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:08:41,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 08:08:41,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359703405] [2022-01-10 08:08:41,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:08:41,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:08:41,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:08:41,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:08:41,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:08:41,231 INFO L87 Difference]: Start difference. First operand 1642 states and 2865 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:08:41,522 INFO L93 Difference]: Finished difference Result 2242 states and 3813 transitions. [2022-01-10 08:08:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:08:41,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 08:08:41,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:08:41,535 INFO L225 Difference]: With dead ends: 2242 [2022-01-10 08:08:41,535 INFO L226 Difference]: Without dead ends: 2142 [2022-01-10 08:08:41,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:08:41,537 INFO L933 BasicCegarLoop]: 1555 mSDtfsCounter, 3415 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3415 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:08:41,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3415 Valid, 2069 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:08:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2022-01-10 08:08:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1838. [2022-01-10 08:08:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1836 states have (on average 1.7282135076252723) internal successors, (3173), 1837 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 3173 transitions. [2022-01-10 08:08:41,589 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 3173 transitions. Word has length 64 [2022-01-10 08:08:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:08:41,591 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 3173 transitions. [2022-01-10 08:08:41,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 3173 transitions. [2022-01-10 08:08:41,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:08:41,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:08:41,592 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] [2022-01-10 08:08:41,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 08:08:41,800 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 08:08:41,801 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:08:41,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:08:41,801 INFO L85 PathProgramCache]: Analyzing trace with hash 91634997, now seen corresponding path program 1 times [2022-01-10 08:08:41,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:08:41,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431416230] [2022-01-10 08:08:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:08:41,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:08:41,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:08:41,803 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 08:08:41,804 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 08:08:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:08:41,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:08:41,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:08:42,098 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 08:08:42,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:08:42,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:08:42,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431416230] [2022-01-10 08:08:42,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431416230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:08:42,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:08:42,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:08:42,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040331440] [2022-01-10 08:08:42,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:08:42,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:08:42,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:08:42,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:08:42,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:08:42,101 INFO L87 Difference]: Start difference. First operand 1838 states and 3173 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:42,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:08:42,159 INFO L93 Difference]: Finished difference Result 2398 states and 4049 transitions. [2022-01-10 08:08:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:08:42,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 08:08:42,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:08:42,168 INFO L225 Difference]: With dead ends: 2398 [2022-01-10 08:08:42,169 INFO L226 Difference]: Without dead ends: 2102 [2022-01-10 08:08:42,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 08:08:42,171 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:08:42,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1635 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:08:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2022-01-10 08:08:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2094. [2022-01-10 08:08:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2092 states have (on average 1.7017208413001912) internal successors, (3560), 2093 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3560 transitions. [2022-01-10 08:08:42,223 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3560 transitions. Word has length 66 [2022-01-10 08:08:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:08:42,224 INFO L470 AbstractCegarLoop]: Abstraction has 2094 states and 3560 transitions. [2022-01-10 08:08:42,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3560 transitions. [2022-01-10 08:08:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:08:42,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:08:42,225 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] [2022-01-10 08:08:42,235 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 08:08:42,433 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 08:08:42,434 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:08:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:08:42,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1100417095, now seen corresponding path program 1 times [2022-01-10 08:08:42,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:08:42,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775649264] [2022-01-10 08:08:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:08:42,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:08:42,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:08:42,436 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 08:08:42,438 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 08:08:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:08:42,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:08:42,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:08:42,672 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 08:08:42,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:08:42,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:08:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775649264] [2022-01-10 08:08:42,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775649264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:08:42,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:08:42,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:08:42,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850378903] [2022-01-10 08:08:42,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:08:42,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:08:42,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:08:42,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:08:42,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:08:42,674 INFO L87 Difference]: Start difference. First operand 2094 states and 3560 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:08:42,724 INFO L93 Difference]: Finished difference Result 3126 states and 5146 transitions. [2022-01-10 08:08:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:08:42,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 08:08:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:08:42,735 INFO L225 Difference]: With dead ends: 3126 [2022-01-10 08:08:42,735 INFO L226 Difference]: Without dead ends: 2574 [2022-01-10 08:08:42,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 08:08:42,740 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 1502 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:08:42,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1686 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:08:42,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-01-10 08:08:42,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2572. [2022-01-10 08:08:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2572 states, 2570 states have (on average 1.6653696498054475) internal successors, (4280), 2571 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 4280 transitions. [2022-01-10 08:08:42,811 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 4280 transitions. Word has length 66 [2022-01-10 08:08:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:08:42,815 INFO L470 AbstractCegarLoop]: Abstraction has 2572 states and 4280 transitions. [2022-01-10 08:08:42,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 4280 transitions. [2022-01-10 08:08:42,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:08:42,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:08:42,818 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] [2022-01-10 08:08:42,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 08:08:43,027 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 08:08:43,028 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:08:43,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:08:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash -826729383, now seen corresponding path program 1 times [2022-01-10 08:08:43,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:08:43,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671437700] [2022-01-10 08:08:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:08:43,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:08:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:08:43,031 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 08:08:43,033 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 08:08:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:08:43,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:08:43,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:08:43,262 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 08:08:43,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:08:43,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:08:43,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671437700] [2022-01-10 08:08:43,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671437700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:08:43,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:08:43,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:08:43,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101592845] [2022-01-10 08:08:43,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:08:43,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:08:43,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:08:43,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:08:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:08:43,264 INFO L87 Difference]: Start difference. First operand 2572 states and 4280 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:08:43,336 INFO L93 Difference]: Finished difference Result 4488 states and 7186 transitions. [2022-01-10 08:08:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:08:43,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 08:08:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:08:43,349 INFO L225 Difference]: With dead ends: 4488 [2022-01-10 08:08:43,349 INFO L226 Difference]: Without dead ends: 3458 [2022-01-10 08:08:43,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 08:08:43,353 INFO L933 BasicCegarLoop]: 1604 mSDtfsCounter, 1506 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:08:43,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1506 Valid, 1695 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:08:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3458 states. [2022-01-10 08:08:43,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3458 to 3456. [2022-01-10 08:08:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3456 states, 3454 states have (on average 1.6178343949044587) internal successors, (5588), 3455 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3456 states to 3456 states and 5588 transitions. [2022-01-10 08:08:43,483 INFO L78 Accepts]: Start accepts. Automaton has 3456 states and 5588 transitions. Word has length 66 [2022-01-10 08:08:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:08:43,484 INFO L470 AbstractCegarLoop]: Abstraction has 3456 states and 5588 transitions. [2022-01-10 08:08:43,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:08:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3456 states and 5588 transitions. [2022-01-10 08:08:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:08:43,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:08:43,485 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] [2022-01-10 08:08:43,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 08:08:43,694 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 08:08:43,694 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:08:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:08:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash 992342265, now seen corresponding path program 1 times [2022-01-10 08:08:43,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:08:43,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432293297] [2022-01-10 08:08:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:08:43,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:08:43,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:08:43,697 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)