/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:08:40,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:08:40,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:08:40,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:08:40,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:08:40,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:08:40,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:08:40,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:08:40,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:08:40,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:08:40,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:08:40,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:08:40,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:08:40,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:08:40,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:08:40,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:08:40,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:08:40,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:08:40,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:08:40,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:08:40,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:08:40,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:08:40,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:08:40,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:08:40,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:08:40,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:08:40,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:08:40,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:08:40,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:08:40,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:08:40,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:08:40,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:08:40,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:08:40,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:08:40,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:08:40,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:08:40,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:08:40,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:08:40,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:08:40,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:08:40,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:08:40,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:08:40,488 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:08:40,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:08:40,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:08:40,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:08:40,490 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:08:40,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:08:40,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:08:40,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:08:40,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:08:40,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:08:40,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:08:40,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:08:40,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:08:40,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:08:40,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:08:40,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:08:40,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:08:40,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:08:40,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:08:40,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:08:40,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:08:40,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:08:40,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:08:40,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:08:40,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:08:40,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:08:40,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:08:40,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:08:40,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:08:40,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:08:40,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:08:40,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:08:40,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:08:40,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:08:40,819 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:08:40,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 19:08:40,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67d7e8e72/f9dc33df8a484ebc8bc9f4a49438b20d/FLAGad90ce324 [2020-10-12 19:08:41,354 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:08:41,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 19:08:41,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67d7e8e72/f9dc33df8a484ebc8bc9f4a49438b20d/FLAGad90ce324 [2020-10-12 19:08:41,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67d7e8e72/f9dc33df8a484ebc8bc9f4a49438b20d [2020-10-12 19:08:41,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:08:41,731 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:08:41,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:08:41,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:08:41,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:08:41,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:08:41" (1/1) ... [2020-10-12 19:08:41,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286d3891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:41, skipping insertion in model container [2020-10-12 19:08:41,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:08:41" (1/1) ... [2020-10-12 19:08:41,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:08:41,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:08:42,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:08:42,361 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:08:42,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:08:42,565 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:08:42,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:42 WrapperNode [2020-10-12 19:08:42,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:08:42,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:08:42,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:08:42,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:08:42,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:42" (1/1) ... [2020-10-12 19:08:42,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:42" (1/1) ... [2020-10-12 19:08:42,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:42" (1/1) ... [2020-10-12 19:08:42,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:42" (1/1) ... [2020-10-12 19:08:42,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:42" (1/1) ... [2020-10-12 19:08:42,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:42" (1/1) ... [2020-10-12 19:08:42,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:42" (1/1) ... [2020-10-12 19:08:42,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:08:42,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:08:42,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:08:42,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:08:42,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:08:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:08:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:08:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:08:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:08:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:08:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:08:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:08:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:08:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:08:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:08:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:08:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:08:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:08:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:08:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:08:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:08:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:08:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:08:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:08:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:08:44,001 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:08:44,002 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:08:44,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:08:44 BoogieIcfgContainer [2020-10-12 19:08:44,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:08:44,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:08:44,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:08:44,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:08:44,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:08:41" (1/3) ... [2020-10-12 19:08:44,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e30230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:08:44, skipping insertion in model container [2020-10-12 19:08:44,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:08:42" (2/3) ... [2020-10-12 19:08:44,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e30230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:08:44, skipping insertion in model container [2020-10-12 19:08:44,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:08:44" (3/3) ... [2020-10-12 19:08:44,016 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 19:08:44,027 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:08:44,035 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:08:44,048 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:08:44,072 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:08:44,072 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:08:44,072 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:08:44,072 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:08:44,073 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:08:44,073 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:08:44,073 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:08:44,073 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:08:44,095 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-10-12 19:08:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 19:08:44,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:08:44,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:08:44,112 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:08:44,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:08:44,119 INFO L82 PathProgramCache]: Analyzing trace with hash -483172071, now seen corresponding path program 1 times [2020-10-12 19:08:44,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:08:44,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995760705] [2020-10-12 19:08:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:08:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:08:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:45,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:46,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:49,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:08:49,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 19:08:49,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:08:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 19:08:49,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:08:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:08:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:08:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 19:08:49,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:08:50,111 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:08:50,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:08:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:08:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:50,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:08:50,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:08:50,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:08:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:08:50,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:08:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:08:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:08:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:08:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:08:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:08:50,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995760705] [2020-10-12 19:08:50,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:08:50,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:08:50,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455548119] [2020-10-12 19:08:50,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:08:50,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:08:50,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:08:50,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:08:50,243 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 5 states. [2020-10-12 19:08:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:08:53,184 INFO L93 Difference]: Finished difference Result 874 states and 1545 transitions. [2020-10-12 19:08:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:08:53,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-12 19:08:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:08:53,211 INFO L225 Difference]: With dead ends: 874 [2020-10-12 19:08:53,212 INFO L226 Difference]: Without dead ends: 575 [2020-10-12 19:08:53,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:08:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-12 19:08:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2020-10-12 19:08:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-10-12 19:08:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 835 transitions. [2020-10-12 19:08:53,321 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 835 transitions. Word has length 142 [2020-10-12 19:08:53,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:08:53,322 INFO L479 AbstractCegarLoop]: Abstraction has 573 states and 835 transitions. [2020-10-12 19:08:53,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:08:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 835 transitions. [2020-10-12 19:08:53,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-12 19:08:53,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:08:53,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:08:53,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:08:53,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:08:53,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:08:53,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1153887107, now seen corresponding path program 1 times [2020-10-12 19:08:53,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:08:53,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367356283] [2020-10-12 19:08:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:08:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:08:53,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:53,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:53,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:57,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:58,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:08:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 19:08:58,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:08:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:08:58,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:08:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:08:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:08:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:08:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:08:58,719 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:08:58,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:08:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:08:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:08:58,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:08:58,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:08:58,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:08:58,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:08:58,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:08:58,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:08:58,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:08:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:08:58,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:08:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:08:58,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367356283] [2020-10-12 19:08:58,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:08:58,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:08:58,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783101124] [2020-10-12 19:08:58,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:08:58,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:08:58,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:08:58,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:08:58,810 INFO L87 Difference]: Start difference. First operand 573 states and 835 transitions. Second operand 5 states. [2020-10-12 19:09:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:01,168 INFO L93 Difference]: Finished difference Result 1638 states and 2377 transitions. [2020-10-12 19:09:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:01,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-12 19:09:01,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:01,176 INFO L225 Difference]: With dead ends: 1638 [2020-10-12 19:09:01,176 INFO L226 Difference]: Without dead ends: 1091 [2020-10-12 19:09:01,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:01,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2020-10-12 19:09:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1089. [2020-10-12 19:09:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1089 states. [2020-10-12 19:09:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1566 transitions. [2020-10-12 19:09:01,283 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1566 transitions. Word has length 143 [2020-10-12 19:09:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:01,283 INFO L479 AbstractCegarLoop]: Abstraction has 1089 states and 1566 transitions. [2020-10-12 19:09:01,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1566 transitions. [2020-10-12 19:09:01,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 19:09:01,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:01,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:09:01,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:09:01,290 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:01,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:01,290 INFO L82 PathProgramCache]: Analyzing trace with hash -778377188, now seen corresponding path program 1 times [2020-10-12 19:09:01,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:01,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009548724] [2020-10-12 19:09:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:01,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:01,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:01,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:01,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:01,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:01,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:02,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:02,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:03,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:06,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:06,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 19:09:06,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:09:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:09:06,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:09:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:09:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:09:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:09:06,639 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:09:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:06,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:06,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:06,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:06,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:09:06,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:06,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:09:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:06,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009548724] [2020-10-12 19:09:06,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:06,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:09:06,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499198917] [2020-10-12 19:09:06,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:09:06,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:06,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:09:06,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:06,759 INFO L87 Difference]: Start difference. First operand 1089 states and 1566 transitions. Second operand 5 states. [2020-10-12 19:09:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:09,418 INFO L93 Difference]: Finished difference Result 3097 states and 4427 transitions. [2020-10-12 19:09:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:09,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-12 19:09:09,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:09,429 INFO L225 Difference]: With dead ends: 3097 [2020-10-12 19:09:09,429 INFO L226 Difference]: Without dead ends: 2067 [2020-10-12 19:09:09,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:09,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2020-10-12 19:09:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 2065. [2020-10-12 19:09:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-10-12 19:09:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2922 transitions. [2020-10-12 19:09:09,537 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2922 transitions. Word has length 144 [2020-10-12 19:09:09,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:09,538 INFO L479 AbstractCegarLoop]: Abstraction has 2065 states and 2922 transitions. [2020-10-12 19:09:09,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:09,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2922 transitions. [2020-10-12 19:09:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 19:09:09,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:09,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:09:09,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:09:09,545 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:09,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:09,547 INFO L82 PathProgramCache]: Analyzing trace with hash 890554980, now seen corresponding path program 1 times [2020-10-12 19:09:09,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:09,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588340606] [2020-10-12 19:09:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:09,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:09,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:09,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:12,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:14,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:14,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 19:09:14,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:09:14,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:09:14,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:14,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:09:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:09:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 19:09:14,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:09:14,960 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:09:14,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:14,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:14,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:14,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:14,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:09:14,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:09:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:15,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588340606] [2020-10-12 19:09:15,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:15,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:09:15,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136380668] [2020-10-12 19:09:15,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:09:15,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:15,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:09:15,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:15,099 INFO L87 Difference]: Start difference. First operand 2065 states and 2922 transitions. Second operand 5 states. [2020-10-12 19:09:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:18,263 INFO L93 Difference]: Finished difference Result 5961 states and 8408 transitions. [2020-10-12 19:09:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:18,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-12 19:09:18,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:18,282 INFO L225 Difference]: With dead ends: 5961 [2020-10-12 19:09:18,282 INFO L226 Difference]: Without dead ends: 3971 [2020-10-12 19:09:18,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:18,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2020-10-12 19:09:18,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 3969. [2020-10-12 19:09:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3969 states. [2020-10-12 19:09:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3969 states to 3969 states and 5544 transitions. [2020-10-12 19:09:18,527 INFO L78 Accepts]: Start accepts. Automaton has 3969 states and 5544 transitions. Word has length 145 [2020-10-12 19:09:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:18,527 INFO L479 AbstractCegarLoop]: Abstraction has 3969 states and 5544 transitions. [2020-10-12 19:09:18,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3969 states and 5544 transitions. [2020-10-12 19:09:18,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 19:09:18,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:18,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:09:18,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:09:18,537 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:18,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:18,537 INFO L82 PathProgramCache]: Analyzing trace with hash 527241596, now seen corresponding path program 1 times [2020-10-12 19:09:18,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:18,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153011537] [2020-10-12 19:09:18,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:18,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:18,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:19,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:19,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:19,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:20,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:20,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:20,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:20,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:23,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:23,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 19:09:23,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:09:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:09:23,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:09:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 19:09:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 19:09:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:23,869 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:09:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:23,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:23,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:23,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:23,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:09:23,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:23,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:09:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:23,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153011537] [2020-10-12 19:09:23,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:23,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:09:23,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947214944] [2020-10-12 19:09:23,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:09:23,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:23,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:09:23,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:23,941 INFO L87 Difference]: Start difference. First operand 3969 states and 5544 transitions. Second operand 6 states. [2020-10-12 19:09:24,217 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 19:09:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:26,230 INFO L93 Difference]: Finished difference Result 7375 states and 11091 transitions. [2020-10-12 19:09:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:09:26,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-12 19:09:26,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:26,266 INFO L225 Difference]: With dead ends: 7375 [2020-10-12 19:09:26,266 INFO L226 Difference]: Without dead ends: 6285 [2020-10-12 19:09:26,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:09:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2020-10-12 19:09:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 6281. [2020-10-12 19:09:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2020-10-12 19:09:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 9232 transitions. [2020-10-12 19:09:26,741 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 9232 transitions. Word has length 146 [2020-10-12 19:09:26,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:26,742 INFO L479 AbstractCegarLoop]: Abstraction has 6281 states and 9232 transitions. [2020-10-12 19:09:26,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:09:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 9232 transitions. [2020-10-12 19:09:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 19:09:26,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:26,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:09:26,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:09:26,752 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:26,753 INFO L82 PathProgramCache]: Analyzing trace with hash -369354061, now seen corresponding path program 1 times [2020-10-12 19:09:26,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:26,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590009086] [2020-10-12 19:09:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:27,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:27,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:27,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:29,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:29,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 19:09:29,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:09:29,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2428 [2020-10-12 19:09:29,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:29,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:09:29,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:09:29,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 19:09:29,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:29,484 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:09:29,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:29,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:29,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:29,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:29,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:09:29,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:29,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590009086] [2020-10-12 19:09:29,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:29,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:09:29,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543816168] [2020-10-12 19:09:29,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:09:29,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:29,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:09:29,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:29,567 INFO L87 Difference]: Start difference. First operand 6281 states and 9232 transitions. Second operand 5 states. [2020-10-12 19:09:32,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:32,443 INFO L93 Difference]: Finished difference Result 18394 states and 26979 transitions. [2020-10-12 19:09:32,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:32,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-12 19:09:32,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:32,498 INFO L225 Difference]: With dead ends: 18394 [2020-10-12 19:09:32,498 INFO L226 Difference]: Without dead ends: 12127 [2020-10-12 19:09:32,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12127 states. [2020-10-12 19:09:33,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12127 to 12125. [2020-10-12 19:09:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12125 states. [2020-10-12 19:09:33,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12125 states to 12125 states and 17586 transitions. [2020-10-12 19:09:33,241 INFO L78 Accepts]: Start accepts. Automaton has 12125 states and 17586 transitions. Word has length 146 [2020-10-12 19:09:33,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:33,242 INFO L479 AbstractCegarLoop]: Abstraction has 12125 states and 17586 transitions. [2020-10-12 19:09:33,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 12125 states and 17586 transitions. [2020-10-12 19:09:33,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 19:09:33,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:33,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:09:33,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:09:33,256 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:33,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:33,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1791267460, now seen corresponding path program 1 times [2020-10-12 19:09:33,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:33,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567643864] [2020-10-12 19:09:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:33,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:33,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:33,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:33,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:33,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:34,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:34,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 19:09:34,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:09:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1079 [2020-10-12 19:09:34,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:09:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:09:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 19:09:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:34,619 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:09:34,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:34,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:34,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:34,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:34,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:09:34,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:34,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567643864] [2020-10-12 19:09:34,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:34,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:09:34,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890481117] [2020-10-12 19:09:34,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:09:34,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:34,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:09:34,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:34,688 INFO L87 Difference]: Start difference. First operand 12125 states and 17586 transitions. Second operand 5 states. [2020-10-12 19:09:37,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:37,880 INFO L93 Difference]: Finished difference Result 35156 states and 50854 transitions. [2020-10-12 19:09:37,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:37,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-12 19:09:37,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:37,937 INFO L225 Difference]: With dead ends: 35156 [2020-10-12 19:09:37,937 INFO L226 Difference]: Without dead ends: 23254 [2020-10-12 19:09:37,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:09:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23254 states. [2020-10-12 19:09:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23254 to 23252. [2020-10-12 19:09:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23252 states. [2020-10-12 19:09:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23252 states to 23252 states and 33252 transitions. [2020-10-12 19:09:39,952 INFO L78 Accepts]: Start accepts. Automaton has 23252 states and 33252 transitions. Word has length 147 [2020-10-12 19:09:39,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:39,952 INFO L479 AbstractCegarLoop]: Abstraction has 23252 states and 33252 transitions. [2020-10-12 19:09:39,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:09:39,952 INFO L276 IsEmpty]: Start isEmpty. Operand 23252 states and 33252 transitions. [2020-10-12 19:09:39,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:09:39,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:39,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:09:39,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:09:39,973 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:39,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:39,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1188017299, now seen corresponding path program 1 times [2020-10-12 19:09:39,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:39,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960978821] [2020-10-12 19:09:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:40,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:40,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 19:09:40,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 19:09:40,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:09:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 19:09:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 19:09:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:40,397 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:09:40,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:40,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:40,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:40,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:40,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:09:40,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:40,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960978821] [2020-10-12 19:09:40,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:40,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:09:40,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164809174] [2020-10-12 19:09:40,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:09:40,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:40,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:09:40,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:09:40,447 INFO L87 Difference]: Start difference. First operand 23252 states and 33252 transitions. Second operand 4 states. [2020-10-12 19:09:40,700 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:09:43,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:43,529 INFO L93 Difference]: Finished difference Result 49176 states and 73126 transitions. [2020-10-12 19:09:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:43,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-12 19:09:43,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:43,612 INFO L225 Difference]: With dead ends: 49176 [2020-10-12 19:09:43,612 INFO L226 Difference]: Without dead ends: 35798 [2020-10-12 19:09:43,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35798 states. [2020-10-12 19:09:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35798 to 35668. [2020-10-12 19:09:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35668 states. [2020-10-12 19:09:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35668 states to 35668 states and 51620 transitions. [2020-10-12 19:09:45,495 INFO L78 Accepts]: Start accepts. Automaton has 35668 states and 51620 transitions. Word has length 148 [2020-10-12 19:09:45,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:45,495 INFO L479 AbstractCegarLoop]: Abstraction has 35668 states and 51620 transitions. [2020-10-12 19:09:45,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:09:45,495 INFO L276 IsEmpty]: Start isEmpty. Operand 35668 states and 51620 transitions. [2020-10-12 19:09:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:09:45,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:45,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:09:45,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:09:45,514 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:45,514 INFO L82 PathProgramCache]: Analyzing trace with hash -601112914, now seen corresponding path program 1 times [2020-10-12 19:09:45,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:45,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133843059] [2020-10-12 19:09:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:45,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:45,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:45,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 19:09:45,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 19:09:45,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:09:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 19:09:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 19:09:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:45,960 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:09:45,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:09:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:09:45,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:09:45,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:09:45,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:09:45,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:09:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:09:45,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:09:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:09:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:09:45,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:09:45,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:09:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:09:46,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133843059] [2020-10-12 19:09:46,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:09:46,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:09:46,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143577140] [2020-10-12 19:09:46,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:09:46,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:09:46,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:09:46,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:09:46,018 INFO L87 Difference]: Start difference. First operand 35668 states and 51620 transitions. Second operand 4 states. [2020-10-12 19:09:46,249 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:09:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:09:50,343 INFO L93 Difference]: Finished difference Result 79116 states and 118282 transitions. [2020-10-12 19:09:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:09:50,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-12 19:09:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:09:50,440 INFO L225 Difference]: With dead ends: 79116 [2020-10-12 19:09:50,440 INFO L226 Difference]: Without dead ends: 57818 [2020-10-12 19:09:50,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:09:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57818 states. [2020-10-12 19:09:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57818 to 57592. [2020-10-12 19:09:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57592 states. [2020-10-12 19:09:54,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57592 states to 57592 states and 83848 transitions. [2020-10-12 19:09:54,862 INFO L78 Accepts]: Start accepts. Automaton has 57592 states and 83848 transitions. Word has length 148 [2020-10-12 19:09:54,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:09:54,862 INFO L479 AbstractCegarLoop]: Abstraction has 57592 states and 83848 transitions. [2020-10-12 19:09:54,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:09:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 57592 states and 83848 transitions. [2020-10-12 19:09:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:09:54,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:09:54,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:09:54,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:09:54,888 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:09:54,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:09:54,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1497708571, now seen corresponding path program 1 times [2020-10-12 19:09:54,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:09:54,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031603849] [2020-10-12 19:09:54,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:09:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 19:09:54,934 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 19:09:54,935 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 19:09:54,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:09:54,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 07:09:54 BoogieIcfgContainer [2020-10-12 19:09:54,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 19:09:54,989 INFO L168 Benchmark]: Toolchain (without parser) took 73258.29 ms. Allocated memory was 138.4 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 99.8 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 542.2 MB. Max. memory is 7.1 GB. [2020-10-12 19:09:54,990 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 19:09:54,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 834.20 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 99.6 MB in the beginning and 167.0 MB in the end (delta: -67.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-10-12 19:09:54,991 INFO L168 Benchmark]: Boogie Preprocessor took 86.48 ms. Allocated memory is still 203.4 MB. Free memory was 167.0 MB in the beginning and 163.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-10-12 19:09:54,992 INFO L168 Benchmark]: RCFGBuilder took 1355.13 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 162.7 MB in the beginning and 156.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-10-12 19:09:54,993 INFO L168 Benchmark]: TraceAbstraction took 70977.90 ms. Allocated memory was 234.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 156.2 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 502.2 MB. Max. memory is 7.1 GB. [2020-10-12 19:09:54,996 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 834.20 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 99.6 MB in the beginning and 167.0 MB in the end (delta: -67.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.48 ms. Allocated memory is still 203.4 MB. Free memory was 167.0 MB in the beginning and 163.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1355.13 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 162.7 MB in the beginning and 156.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 70977.90 ms. Allocated memory was 234.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 156.2 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 502.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 813]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1708; [L68] int __return_1836; [L69] int __return_1954; [L70] int __return_2075; [L71] int __return_2198; [L72] int __tmp_2199_0; [L73] int __return_2307; [L74] int __return_2212; [L77] int main__c1; [L78] int main__i2; [L79] main__c1 = 0 [L80] ep12 = __VERIFIER_nondet_bool() [L81] ep13 = __VERIFIER_nondet_bool() [L82] ep21 = __VERIFIER_nondet_bool() [L83] ep23 = __VERIFIER_nondet_bool() [L84] ep31 = __VERIFIER_nondet_bool() [L85] ep32 = __VERIFIER_nondet_bool() [L86] id1 = __VERIFIER_nondet_char() [L87] r1 = __VERIFIER_nondet_char() [L88] st1 = __VERIFIER_nondet_char() [L89] nl1 = __VERIFIER_nondet_char() [L90] m1 = __VERIFIER_nondet_char() [L91] max1 = __VERIFIER_nondet_char() [L92] mode1 = __VERIFIER_nondet_bool() [L93] id2 = __VERIFIER_nondet_char() [L94] r2 = __VERIFIER_nondet_char() [L95] st2 = __VERIFIER_nondet_char() [L96] nl2 = __VERIFIER_nondet_char() [L97] m2 = __VERIFIER_nondet_char() [L98] max2 = __VERIFIER_nondet_char() [L99] mode2 = __VERIFIER_nondet_bool() [L100] id3 = __VERIFIER_nondet_char() [L101] r3 = __VERIFIER_nondet_char() [L102] st3 = __VERIFIER_nondet_char() [L103] nl3 = __VERIFIER_nondet_char() [L104] m3 = __VERIFIER_nondet_char() [L105] max3 = __VERIFIER_nondet_char() [L106] mode3 = __VERIFIER_nondet_bool() [L108] _Bool init__r121; [L109] _Bool init__r131; [L110] _Bool init__r211; [L111] _Bool init__r231; [L112] _Bool init__r311; [L113] _Bool init__r321; [L114] _Bool init__r122; [L115] int init__tmp; [L116] _Bool init__r132; [L117] int init__tmp___0; [L118] _Bool init__r212; [L119] int init__tmp___1; [L120] _Bool init__r232; [L121] int init__tmp___2; [L122] _Bool init__r312; [L123] int init__tmp___3; [L124] _Bool init__r322; [L125] int init__tmp___4; [L126] int init__tmp___5; [L127] init__r121 = ep12 [L128] init__r131 = ep13 [L129] init__r211 = ep21 [L130] init__r231 = ep23 [L131] init__r311 = ep31 [L132] init__r321 = ep32 [L133] COND FALSE !(!(init__r121 == 0)) [L2223] COND FALSE !(!(init__r131 == 0)) [L2239] init__tmp = 0 [L137] init__r122 = (_Bool)init__tmp [L138] COND FALSE !(!(init__r131 == 0)) [L2200] COND FALSE !(!(init__r121 == 0)) [L2216] init__tmp___0 = 0 [L142] init__r132 = (_Bool)init__tmp___0 [L143] COND FALSE !(!(init__r211 == 0)) [L2177] COND FALSE !(!(init__r231 == 0)) [L2193] init__tmp___1 = 0 [L147] init__r212 = (_Bool)init__tmp___1 [L148] COND FALSE !(!(init__r231 == 0)) [L2154] COND FALSE !(!(init__r211 == 0)) [L2170] init__tmp___2 = 0 [L152] init__r232 = (_Bool)init__tmp___2 [L153] COND FALSE !(!(init__r311 == 0)) [L2131] COND FALSE !(!(init__r321 == 0)) [L2147] init__tmp___3 = 0 [L157] init__r312 = (_Bool)init__tmp___3 [L158] COND FALSE !(!(init__r321 == 0)) [L2108] COND FALSE !(!(init__r311 == 0)) [L2124] init__tmp___4 = 0 [L162] init__r322 = (_Bool)init__tmp___4 [L163] COND TRUE ((int)id1) != ((int)id2) [L165] COND TRUE ((int)id1) != ((int)id3) [L167] COND TRUE ((int)id2) != ((int)id3) [L169] COND TRUE ((int)id1) >= 0 [L171] COND TRUE ((int)id2) >= 0 [L173] COND TRUE ((int)id3) >= 0 [L175] COND TRUE ((int)r1) == 0 [L177] COND TRUE ((int)r2) == 0 [L179] COND TRUE ((int)r3) == 0 [L181] COND TRUE ((int)max1) == ((int)id1) [L183] COND TRUE ((int)max2) == ((int)id2) [L185] COND TRUE ((int)max3) == ((int)id3) [L187] COND TRUE ((int)st1) == 0 [L189] COND TRUE ((int)st2) == 0 [L191] COND TRUE ((int)st3) == 0 [L193] COND TRUE ((int)nl1) == 0 [L195] COND TRUE ((int)nl2) == 0 [L197] COND TRUE ((int)nl3) == 0 [L199] COND TRUE ((int)mode1) == 0 [L201] COND TRUE ((int)mode2) == 0 [L203] COND TRUE ((int)mode3) == 0 [L205] init__tmp___5 = 1 [L206] __return_1708 = init__tmp___5 [L207] main__i2 = __return_1708 [L208] COND TRUE main__i2 != 0 [L210] p12_old = nomsg [L211] p12_new = nomsg [L212] p13_old = nomsg [L213] p13_new = nomsg [L214] p21_old = nomsg [L215] p21_new = nomsg [L216] p23_old = nomsg [L217] p23_new = nomsg [L218] p31_old = nomsg [L219] p31_new = nomsg [L220] p32_old = nomsg [L221] p32_new = nomsg [L222] main__i2 = 0 [L223] COND TRUE main__i2 < 6 [L226] COND FALSE !(!(mode1 == 0)) [L232] COND TRUE ((int)r1) < 2 [L234] COND FALSE !(!(ep12 == 0)) [L245] COND FALSE !(!(ep13 == 0)) [L256] mode1 = 1 [L258] COND FALSE !(!(mode2 == 0)) [L264] COND TRUE ((int)r2) < 2 [L266] COND FALSE !(!(ep21 == 0)) [L277] COND FALSE !(!(ep23 == 0)) [L288] mode2 = 1 [L290] COND FALSE !(!(mode3 == 0)) [L296] COND TRUE ((int)r3) < 2 [L298] COND FALSE !(!(ep31 == 0)) [L309] COND FALSE !(!(ep32 == 0)) [L320] mode3 = 1 [L321] p12_old = p12_new [L322] p12_new = nomsg [L323] p13_old = p13_new [L324] p13_new = nomsg [L325] p21_old = p21_new [L326] p21_new = nomsg [L327] p23_old = p23_new [L328] p23_new = nomsg [L329] p31_old = p31_new [L330] p31_new = nomsg [L331] p32_old = p32_new [L332] p32_new = nomsg [L334] int check__tmp; [L335] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L337] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L339] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L341] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L343] COND FALSE !(((int)r1) >= 2) [L349] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L351] COND TRUE ((int)r1) < 2 [L353] COND FALSE !(((int)r1) >= 2) [L359] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L361] COND TRUE ((int)r1) < 2 [L363] check__tmp = 1 [L364] __return_1836 = check__tmp [L365] main__c1 = __return_1836 [L367] _Bool __tmp_1; [L368] __tmp_1 = main__c1 [L369] _Bool assert__arg; [L370] assert__arg = __tmp_1 [L371] COND FALSE !(assert__arg == 0) [L377] int main____CPAchecker_TMP_0 = main__i2; [L378] main__i2 = main__i2 + 1 [L379] COND TRUE main__i2 < 6 [L382] COND TRUE !(mode1 == 0) [L384] r1 = (char)(((int)r1) + 1) [L385] COND FALSE !(!(ep21 == 0)) [L393] COND FALSE !(!(ep31 == 0)) [L401] COND FALSE !(((int)r1) == 2) [L407] mode1 = 0 [L409] COND TRUE !(mode2 == 0) [L411] r2 = (char)(((int)r2) + 1) [L412] COND FALSE !(!(ep12 == 0)) [L420] COND FALSE !(!(ep32 == 0)) [L428] COND FALSE !(((int)r2) == 2) [L434] mode2 = 0 [L436] COND TRUE !(mode3 == 0) [L438] r3 = (char)(((int)r3) + 1) [L439] COND FALSE !(!(ep13 == 0)) [L447] COND FALSE !(!(ep23 == 0)) [L455] COND FALSE !(((int)r3) == 2) [L461] mode3 = 0 [L462] p12_old = p12_new [L463] p12_new = nomsg [L464] p13_old = p13_new [L465] p13_new = nomsg [L466] p21_old = p21_new [L467] p21_new = nomsg [L468] p23_old = p23_new [L469] p23_new = nomsg [L470] p31_old = p31_new [L471] p31_new = nomsg [L472] p32_old = p32_new [L473] p32_new = nomsg [L475] int check__tmp; [L476] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L478] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L480] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L482] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L484] COND FALSE !(((int)r1) >= 2) [L490] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L492] COND TRUE ((int)r1) < 2 [L494] COND FALSE !(((int)r1) >= 2) [L500] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L502] COND TRUE ((int)r1) < 2 [L504] check__tmp = 1 [L505] __return_1954 = check__tmp [L506] main__c1 = __return_1954 [L508] _Bool __tmp_2; [L509] __tmp_2 = main__c1 [L510] _Bool assert__arg; [L511] assert__arg = __tmp_2 [L512] COND FALSE !(assert__arg == 0) [L518] int main____CPAchecker_TMP_0 = main__i2; [L519] main__i2 = main__i2 + 1 [L520] COND TRUE main__i2 < 6 [L523] COND FALSE !(!(mode1 == 0)) [L529] COND TRUE ((int)r1) < 2 [L531] COND FALSE !(!(ep12 == 0)) [L542] COND FALSE !(!(ep13 == 0)) [L553] mode1 = 1 [L555] COND FALSE !(!(mode2 == 0)) [L561] COND TRUE ((int)r2) < 2 [L563] COND FALSE !(!(ep21 == 0)) [L574] COND FALSE !(!(ep23 == 0)) [L585] mode2 = 1 [L587] COND FALSE !(!(mode3 == 0)) [L593] COND TRUE ((int)r3) < 2 [L595] COND FALSE !(!(ep31 == 0)) [L606] COND FALSE !(!(ep32 == 0)) [L617] mode3 = 1 [L618] p12_old = p12_new [L619] p12_new = nomsg [L620] p13_old = p13_new [L621] p13_new = nomsg [L622] p21_old = p21_new [L623] p21_new = nomsg [L624] p23_old = p23_new [L625] p23_new = nomsg [L626] p31_old = p31_new [L627] p31_new = nomsg [L628] p32_old = p32_new [L629] p32_new = nomsg [L631] int check__tmp; [L632] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L634] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L636] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L638] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L640] COND FALSE !(((int)r1) >= 2) [L646] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L648] COND TRUE ((int)r1) < 2 [L650] COND FALSE !(((int)r1) >= 2) [L656] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L658] COND TRUE ((int)r1) < 2 [L660] check__tmp = 1 [L661] __return_2075 = check__tmp [L662] main__c1 = __return_2075 [L664] _Bool __tmp_3; [L665] __tmp_3 = main__c1 [L666] _Bool assert__arg; [L667] assert__arg = __tmp_3 [L668] COND FALSE !(assert__arg == 0) [L674] int main____CPAchecker_TMP_0 = main__i2; [L675] main__i2 = main__i2 + 1 [L676] COND TRUE main__i2 < 6 [L679] COND TRUE !(mode1 == 0) [L681] r1 = (char)(((int)r1) + 1) [L682] COND FALSE !(!(ep21 == 0)) [L690] COND FALSE !(!(ep31 == 0)) [L698] COND TRUE ((int)r1) == 2 [L700] COND TRUE ((int)max1) == ((int)id1) [L702] st1 = 1 [L704] mode1 = 0 [L706] COND TRUE !(mode2 == 0) [L708] r2 = (char)(((int)r2) + 1) [L709] COND FALSE !(!(ep12 == 0)) [L717] COND FALSE !(!(ep32 == 0)) [L725] COND TRUE ((int)r2) == 2 [L727] COND TRUE ((int)max2) == ((int)id2) [L729] st2 = 1 [L731] mode2 = 0 [L733] COND TRUE !(mode3 == 0) [L735] r3 = (char)(((int)r3) + 1) [L736] COND FALSE !(!(ep13 == 0)) [L744] COND FALSE !(!(ep23 == 0)) [L752] COND TRUE ((int)r3) == 2 [L754] COND TRUE ((int)max3) == ((int)id3) [L756] st3 = 1 [L758] mode3 = 0 [L759] p12_old = p12_new [L760] p12_new = nomsg [L761] p13_old = p13_new [L762] p13_new = nomsg [L763] p21_old = p21_new [L764] p21_new = nomsg [L765] p23_old = p23_new [L766] p23_new = nomsg [L767] p31_old = p31_new [L768] p31_new = nomsg [L769] p32_old = p32_new [L770] p32_new = nomsg [L772] int check__tmp; [L773] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1398] check__tmp = 0 [L801] __return_2198 = check__tmp [L802] main__c1 = __return_2198 [L803] __tmp_2199_0 = main____CPAchecker_TMP_0 [L805] main____CPAchecker_TMP_0 = __tmp_2199_0 [L807] _Bool __tmp_4; [L808] __tmp_4 = main__c1 [L809] _Bool assert__arg; [L810] assert__arg = __tmp_4 [L811] COND TRUE assert__arg == 0 [L813] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 308 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 70.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 27.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5914 SDtfs, 6730 SDslu, 3781 SDs, 0 SdLazy, 6581 SolverSat, 128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57592occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 372 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 31.9s InterpolantComputationTime, 1457 NumberOfCodeBlocks, 1457 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 1079540 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...