/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=WIDEST --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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:30:22,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:30:22,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:30:22,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:30:22,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:30:22,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:30:22,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:30:22,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:30:22,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:30:22,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:30:22,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:30:22,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:30:22,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:30:22,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:30:22,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:30:22,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:30:22,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:30:22,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:30:22,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:30:22,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:30:22,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:30:22,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:30:22,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:30:22,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:30:22,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:30:22,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:30:22,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:30:22,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:30:22,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:30:22,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:30:22,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:30:22,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:30:22,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:30:22,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:30:22,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:30:22,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:30:22,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:30:22,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:30:22,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:30:22,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:30:22,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:30:22,459 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 [2020-09-25 03:30:22,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:30:22,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:30:22,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:30:22,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:30:22,503 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:30:22,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:30:22,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:30:22,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:30:22,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:30:22,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:30:22,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:30:22,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:30:22,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:30:22,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:30:22,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:30:22,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:30:22,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:30:22,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:30:22,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:30:22,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:30:22,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:30:22,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:30:22,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:30:22,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:30:22,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:30:22,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:30:22,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:30:22,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:30:22,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:30:22,508 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:30:22,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:30:22,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:30:22,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:30:23,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:30:23,000 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:30:23,001 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 03:30:23,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41a60e833/ae552e8aad4d4b22bd6148658169c65d/FLAG395244a59 [2020-09-25 03:30:23,758 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:30:23,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 03:30:23,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41a60e833/ae552e8aad4d4b22bd6148658169c65d/FLAG395244a59 [2020-09-25 03:30:23,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41a60e833/ae552e8aad4d4b22bd6148658169c65d [2020-09-25 03:30:24,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:30:24,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:30:24,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:30:24,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:30:24,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:30:24,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:30:23" (1/1) ... [2020-09-25 03:30:24,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744031ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:24, skipping insertion in model container [2020-09-25 03:30:24,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:30:23" (1/1) ... [2020-09-25 03:30:24,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:30:24,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:30:24,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:30:24,899 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:30:25,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:30:25,409 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:30:25,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:25 WrapperNode [2020-09-25 03:30:25,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:30:25,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:30:25,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:30:25,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:30:25,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:25" (1/1) ... [2020-09-25 03:30:25,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:25" (1/1) ... [2020-09-25 03:30:25,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:25" (1/1) ... [2020-09-25 03:30:25,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:25" (1/1) ... [2020-09-25 03:30:25,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:25" (1/1) ... [2020-09-25 03:30:25,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:25" (1/1) ... [2020-09-25 03:30:25,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:25" (1/1) ... [2020-09-25 03:30:25,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:30:25,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:30:25,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:30:25,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:30:25,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:25" (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 [2020-09-25 03:30:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:30:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:30:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:30:25,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:30:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:30:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 03:30:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 03:30:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 03:30:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:30:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:30:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 03:30:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 03:30:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 03:30:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 03:30:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 03:30:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 03:30:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 03:30:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:30:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:30:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:30:27,834 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:30:27,835 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:30:27,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:30:27 BoogieIcfgContainer [2020-09-25 03:30:27,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:30:27,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:30:27,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:30:27,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:30:27,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:30:23" (1/3) ... [2020-09-25 03:30:27,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cf4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:30:27, skipping insertion in model container [2020-09-25 03:30:27,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:25" (2/3) ... [2020-09-25 03:30:27,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cf4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:30:27, skipping insertion in model container [2020-09-25 03:30:27,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:30:27" (3/3) ... [2020-09-25 03:30:27,856 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 03:30:27,868 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:30:27,880 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 03:30:27,899 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 03:30:27,932 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:30:27,932 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:30:27,932 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:30:27,932 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:30:27,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:30:27,932 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:30:27,932 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:30:27,932 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:30:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states. [2020-09-25 03:30:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 03:30:28,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:28,023 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] [2020-09-25 03:30:28,023 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:28,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times [2020-09-25 03:30:28,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:28,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811183227] [2020-09-25 03:30:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:30,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:30,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:33,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:33,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-25 03:30:33,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:30:33,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 03:30:33,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:33,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:30:33,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-09-25 03:30:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 03:30:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:30:34,467 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 03:30:34,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:34,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:30:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:34,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 03:30:34,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:30:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:30:34,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811183227] [2020-09-25 03:30:34,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:34,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:30:34,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893488676] [2020-09-25 03:30:34,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:30:34,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:34,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:30:34,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:34,920 INFO L87 Difference]: Start difference. First operand 1237 states. Second operand 4 states. [2020-09-25 03:30:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:30:39,898 INFO L93 Difference]: Finished difference Result 2024 states and 2590 transitions. [2020-09-25 03:30:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:30:39,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2020-09-25 03:30:39,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:30:39,950 INFO L225 Difference]: With dead ends: 2024 [2020-09-25 03:30:39,950 INFO L226 Difference]: Without dead ends: 1455 [2020-09-25 03:30:39,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-09-25 03:30:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1448. [2020-09-25 03:30:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-09-25 03:30:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1727 transitions. [2020-09-25 03:30:40,121 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1727 transitions. Word has length 465 [2020-09-25 03:30:40,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:30:40,129 INFO L479 AbstractCegarLoop]: Abstraction has 1448 states and 1727 transitions. [2020-09-25 03:30:40,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:30:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1727 transitions. [2020-09-25 03:30:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 03:30:40,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:40,149 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] [2020-09-25 03:30:40,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:30:40,150 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:40,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash 888544568, now seen corresponding path program 1 times [2020-09-25 03:30:40,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:40,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066596484] [2020-09-25 03:30:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:40,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:41,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:41,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:45,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:45,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-25 03:30:45,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:30:45,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-25 03:30:45,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:45,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:30:45,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 03:30:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 03:30:45,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:30:46,010 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 03:30:46,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:46,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:46,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:30:46,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 03:30:46,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:30:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:30:46,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066596484] [2020-09-25 03:30:46,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:46,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:30:46,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908237245] [2020-09-25 03:30:46,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:30:46,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:46,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:30:46,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:30:46,557 INFO L87 Difference]: Start difference. First operand 1448 states and 1727 transitions. Second operand 5 states. [2020-09-25 03:30:53,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:30:53,593 INFO L93 Difference]: Finished difference Result 3862 states and 4652 transitions. [2020-09-25 03:30:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:30:53,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-09-25 03:30:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:30:53,610 INFO L225 Difference]: With dead ends: 3862 [2020-09-25 03:30:53,610 INFO L226 Difference]: Without dead ends: 2630 [2020-09-25 03:30:53,615 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 [2020-09-25 03:30:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-09-25 03:30:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2503. [2020-09-25 03:30:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2503 states. [2020-09-25 03:30:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3018 transitions. [2020-09-25 03:30:53,744 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3018 transitions. Word has length 465 [2020-09-25 03:30:53,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:30:53,745 INFO L479 AbstractCegarLoop]: Abstraction has 2503 states and 3018 transitions. [2020-09-25 03:30:53,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:30:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3018 transitions. [2020-09-25 03:30:53,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-09-25 03:30:53,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:53,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:30:53,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:30:53,753 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:53,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1155003978, now seen corresponding path program 1 times [2020-09-25 03:30:53,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:53,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053932659] [2020-09-25 03:30:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:53,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:54,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:54,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:54,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:54,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:57,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:58,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:58,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:58,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-09-25 03:30:58,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:30:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 03:30:58,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:30:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-25 03:30:58,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 03:30:58,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:30:59,374 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 03:30:59,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:59,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:59,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:59,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:30:59,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:59,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 03:30:59,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:30:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:30:59,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053932659] [2020-09-25 03:30:59,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:59,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:30:59,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371713167] [2020-09-25 03:30:59,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:30:59,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:59,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:30:59,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:30:59,857 INFO L87 Difference]: Start difference. First operand 2503 states and 3018 transitions. Second operand 5 states. [2020-09-25 03:31:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:31:07,039 INFO L93 Difference]: Finished difference Result 6885 states and 8354 transitions. [2020-09-25 03:31:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:31:07,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 466 [2020-09-25 03:31:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:31:07,061 INFO L225 Difference]: With dead ends: 6885 [2020-09-25 03:31:07,061 INFO L226 Difference]: Without dead ends: 4673 [2020-09-25 03:31:07,066 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 [2020-09-25 03:31:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2020-09-25 03:31:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 4558. [2020-09-25 03:31:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4558 states. [2020-09-25 03:31:07,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4558 states to 4558 states and 5516 transitions. [2020-09-25 03:31:07,248 INFO L78 Accepts]: Start accepts. Automaton has 4558 states and 5516 transitions. Word has length 466 [2020-09-25 03:31:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:31:07,249 INFO L479 AbstractCegarLoop]: Abstraction has 4558 states and 5516 transitions. [2020-09-25 03:31:07,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:31:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4558 states and 5516 transitions. [2020-09-25 03:31:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-09-25 03:31:07,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:31:07,262 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] [2020-09-25 03:31:07,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:31:07,262 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:31:07,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:31:07,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1955390198, now seen corresponding path program 1 times [2020-09-25 03:31:07,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:31:07,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054016866] [2020-09-25 03:31:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:31:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:31:07,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:07,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:07,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:08,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:10,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking...