/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:46:10,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:46:10,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:46:10,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:46:10,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:46:10,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:46:10,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:46:10,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:46:10,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:46:10,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:46:10,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:46:10,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:46:10,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:46:10,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:46:10,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:46:10,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:46:10,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:46:10,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:46:10,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:46:10,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:46:10,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:46:10,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:46:10,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:46:10,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:46:10,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:46:10,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:46:10,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:46:10,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:46:10,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:46:10,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:46:10,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:46:10,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:46:10,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:46:10,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:46:10,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:46:10,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:46:10,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:46:10,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:46:10,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:46:10,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:46:10,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:46:10,441 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 [2020-09-24 20:46:10,482 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:46:10,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:46:10,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:46:10,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:46:10,487 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:46:10,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:46:10,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:46:10,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:46:10,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:46:10,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:46:10,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:46:10,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:46:10,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:46:10,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:46:10,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:46:10,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:46:10,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:46:10,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:46:10,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:46:10,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:46:10,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:46:10,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:46:10,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:46:10,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:46:10,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:46:10,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:46:10,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:46:10,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:46:10,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:46:10,495 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 -> SingleStatement 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; 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; 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; 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; 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; [2020-09-24 20:46:10,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:46:11,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:46:11,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:46:11,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:46:11,020 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:46:11,021 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 20:46:11,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56db66b28/2b2f02040a194d6c937ecf57a8fd5685/FLAG9a9f99459 [2020-09-24 20:46:11,875 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:46:11,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 20:46:11,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56db66b28/2b2f02040a194d6c937ecf57a8fd5685/FLAG9a9f99459 [2020-09-24 20:46:11,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56db66b28/2b2f02040a194d6c937ecf57a8fd5685 [2020-09-24 20:46:12,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:46:12,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:46:12,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:46:12,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:46:12,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:46:12,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:46:11" (1/1) ... [2020-09-24 20:46:12,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d1a539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:12, skipping insertion in model container [2020-09-24 20:46:12,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:46:11" (1/1) ... [2020-09-24 20:46:12,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:46:12,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:46:13,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:46:13,659 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:46:14,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:46:14,782 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:46:14,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:14 WrapperNode [2020-09-24 20:46:14,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:46:14,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:46:14,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:46:14,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:46:14,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:14" (1/1) ... [2020-09-24 20:46:14,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:14" (1/1) ... [2020-09-24 20:46:14,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:14" (1/1) ... [2020-09-24 20:46:14,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:14" (1/1) ... [2020-09-24 20:46:14,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:14" (1/1) ... [2020-09-24 20:46:14,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:14" (1/1) ... [2020-09-24 20:46:14,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:14" (1/1) ... [2020-09-24 20:46:14,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:46:14,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:46:14,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:46:14,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:46:14,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:14" (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 [2020-09-24 20:46:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:46:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:46:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:46:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:46:15,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:46:15,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 20:46:15,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 20:46:15,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 20:46:15,072 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 20:46:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:46:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:46:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 20:46:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 20:46:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 20:46:15,074 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 20:46:15,074 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 20:46:15,074 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 20:46:15,074 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 20:46:15,075 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 20:46:15,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:46:15,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:46:15,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:46:19,048 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:46:19,049 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:46:19,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:46:19 BoogieIcfgContainer [2020-09-24 20:46:19,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:46:19,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:46:19,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:46:19,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:46:19,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:46:11" (1/3) ... [2020-09-24 20:46:19,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419746c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:46:19, skipping insertion in model container [2020-09-24 20:46:19,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:46:14" (2/3) ... [2020-09-24 20:46:19,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419746c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:46:19, skipping insertion in model container [2020-09-24 20:46:19,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:46:19" (3/3) ... [2020-09-24 20:46:19,072 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 20:46:19,083 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:46:19,096 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-09-24 20:46:19,118 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-09-24 20:46:19,157 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:46:19,157 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:46:19,158 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:46:19,158 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:46:19,158 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:46:19,158 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:46:19,158 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:46:19,158 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:46:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states. [2020-09-24 20:46:19,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2020-09-24 20:46:19,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:46:19,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:46:19,301 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:46:19,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:46:19,309 INFO L82 PathProgramCache]: Analyzing trace with hash 197216454, now seen corresponding path program 1 times [2020-09-24 20:46:19,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:46:19,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998425667] [2020-09-24 20:46:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:46:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:46:21,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:22,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:23,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:24,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:25,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:25,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:46:25,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-09-24 20:46:25,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:46:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 20:46:25,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:46:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:46:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-09-24 20:46:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-24 20:46:25,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:46:26,836 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-24 20:46:26,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:46:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:46:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:26,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:46:26,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 20:46:26,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:46:26,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 20:46:26,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:46:26,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:46:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:46:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:46:26,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:46:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:46:28,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998425667] [2020-09-24 20:46:28,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:46:28,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:46:28,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955985546] [2020-09-24 20:46:28,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:46:28,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:46:28,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:46:28,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:46:28,107 INFO L87 Difference]: Start difference. First operand 3048 states. Second operand 5 states. [2020-09-24 20:46:51,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:46:51,490 INFO L93 Difference]: Finished difference Result 8384 states and 10764 transitions. [2020-09-24 20:46:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:46:51,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 938 [2020-09-24 20:46:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:46:51,541 INFO L225 Difference]: With dead ends: 8384 [2020-09-24 20:46:51,541 INFO L226 Difference]: Without dead ends: 5119 [2020-09-24 20:46:51,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:46:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2020-09-24 20:46:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 4574. [2020-09-24 20:46:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4574 states. [2020-09-24 20:46:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 5559 transitions. [2020-09-24 20:46:51,798 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 5559 transitions. Word has length 938 [2020-09-24 20:46:51,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:46:51,800 INFO L479 AbstractCegarLoop]: Abstraction has 4574 states and 5559 transitions. [2020-09-24 20:46:51,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:46:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 5559 transitions. [2020-09-24 20:46:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2020-09-24 20:46:51,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:46:51,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:46:51,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:46:51,848 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:46:51,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:46:51,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1180344492, now seen corresponding path program 1 times [2020-09-24 20:46:51,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:46:51,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117210435] [2020-09-24 20:46:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:46:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:46:52,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:52,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:54,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:57,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:46:57,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 947 [2020-09-24 20:46:57,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:46:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-09-24 20:46:57,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:46:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:46:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 298 [2020-09-24 20:46:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-09-24 20:46:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:46:58,236 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-24 20:46:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:46:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:46:58,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:58,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:46:58,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 20:46:58,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:46:58,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 20:46:58,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:46:58,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:46:58,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:46:58,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:46:58,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:47:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:47:00,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117210435] [2020-09-24 20:47:00,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:47:00,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:47:00,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874274759] [2020-09-24 20:47:00,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:47:00,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:47:00,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:47:00,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:47:00,168 INFO L87 Difference]: Start difference. First operand 4574 states and 5559 transitions. Second operand 5 states.