/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:15:44,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:15:44,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:15:44,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:15:44,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:15:44,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:15:44,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:15:44,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:15:44,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:15:44,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:15:44,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:15:44,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:15:44,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:15:44,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:15:44,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:15:44,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:15:44,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:15:44,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:15:44,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:15:44,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:15:44,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:15:44,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:15:44,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:15:44,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:15:44,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:15:44,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:15:44,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:15:44,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:15:44,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:15:44,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:15:44,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:15:44,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:15:44,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:15:44,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:15:44,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:15:44,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:15:44,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:15:44,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:15:44,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:15:44,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:15:44,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:15:44,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:15:44,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:15:44,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:15:44,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:15:44,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:15:44,488 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:15:44,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:15:44,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:15:44,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:15:44,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:15:44,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:15:44,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:15:44,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:15:44,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:15:44,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:15:44,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:15:44,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:15:44,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:15:44,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:15:44,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:15:44,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:15:44,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:15:44,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:15:44,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:15:44,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:15:44,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:15:44,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:15:44,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:15:44,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:15:44,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:15:44,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:15:44,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:15:44,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:15:44,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:15:44,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:15:44,822 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:15:44,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:15:44,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0456dc35b/063d273b629c4438a6356f0cef43e59a/FLAGde09f9039 [2020-10-15 04:15:45,473 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:15:45,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:15:45,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0456dc35b/063d273b629c4438a6356f0cef43e59a/FLAGde09f9039 [2020-10-15 04:15:45,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0456dc35b/063d273b629c4438a6356f0cef43e59a [2020-10-15 04:15:45,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:15:45,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:15:45,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:15:45,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:15:45,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:15:45,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:15:45" (1/1) ... [2020-10-15 04:15:45,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718a428c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:45, skipping insertion in model container [2020-10-15 04:15:45,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:15:45" (1/1) ... [2020-10-15 04:15:45,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:15:45,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:15:46,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:15:46,442 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:15:46,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:15:46,694 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:15:46,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:46 WrapperNode [2020-10-15 04:15:46,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:15:46,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:15:46,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:15:46,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:15:46,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:46" (1/1) ... [2020-10-15 04:15:46,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:46" (1/1) ... [2020-10-15 04:15:46,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:46" (1/1) ... [2020-10-15 04:15:46,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:46" (1/1) ... [2020-10-15 04:15:46,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:46" (1/1) ... [2020-10-15 04:15:46,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:46" (1/1) ... [2020-10-15 04:15:46,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:46" (1/1) ... [2020-10-15 04:15:46,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:15:46,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:15:46,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:15:46,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:15:46,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:15:46,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:15:46,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:15:46,990 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:15:46,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:15:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:15:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:15:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:15:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:15:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:15:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:15:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:15:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:15:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:15:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:15:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:15:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:15:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:15:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:15:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:15:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:15:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:15:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:15:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:15:49,384 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:15:49,384 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:15:49,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:15:49 BoogieIcfgContainer [2020-10-15 04:15:49,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:15:49,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:15:49,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:15:49,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:15:49,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:15:45" (1/3) ... [2020-10-15 04:15:49,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d361aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:15:49, skipping insertion in model container [2020-10-15 04:15:49,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:46" (2/3) ... [2020-10-15 04:15:49,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d361aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:15:49, skipping insertion in model container [2020-10-15 04:15:49,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:15:49" (3/3) ... [2020-10-15 04:15:49,403 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:15:49,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:15:49,423 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:15:49,438 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:15:49,466 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:15:49,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:15:49,467 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:15:49,467 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:15:49,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:15:49,467 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:15:49,467 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:15:49,467 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:15:49,501 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2020-10-15 04:15:49,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-15 04:15:49,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:15:49,532 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] [2020-10-15 04:15:49,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:15:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:15:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash 202782792, now seen corresponding path program 1 times [2020-10-15 04:15:49,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:15:49,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307051235] [2020-10-15 04:15:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:15:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:50,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:52,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:55,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:55,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-15 04:15:55,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:15:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:15:55,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:55,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:55,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:15:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-15 04:15:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 04:15:55,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 04:15:56,510 WARN L193 SmtUtils]: Spent 958.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 04:15:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:15:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:56,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:56,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:15:56,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:15:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 04:15:56,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:56,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:15:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:15:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:15:56,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:15:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:15:56,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307051235] [2020-10-15 04:15:56,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:15:56,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:15:56,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815911848] [2020-10-15 04:15:56,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:15:56,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:15:56,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:15:56,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:15:56,716 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 4 states. [2020-10-15 04:15:57,679 WARN L193 SmtUtils]: Spent 865.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-15 04:16:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:03,097 INFO L93 Difference]: Finished difference Result 1239 states and 2192 transitions. [2020-10-15 04:16:03,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:16:03,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2020-10-15 04:16:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:03,143 INFO L225 Difference]: With dead ends: 1239 [2020-10-15 04:16:03,144 INFO L226 Difference]: Without dead ends: 998 [2020-10-15 04:16:03,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2020-10-15 04:16:03,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 995. [2020-10-15 04:16:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-10-15 04:16:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1722 transitions. [2020-10-15 04:16:03,301 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1722 transitions. Word has length 217 [2020-10-15 04:16:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:03,303 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1722 transitions. [2020-10-15 04:16:03,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:16:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1722 transitions. [2020-10-15 04:16:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-15 04:16:03,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:03,308 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] [2020-10-15 04:16:03,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:16:03,308 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:03,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:03,309 INFO L82 PathProgramCache]: Analyzing trace with hash 574669453, now seen corresponding path program 1 times [2020-10-15 04:16:03,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:03,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449189127] [2020-10-15 04:16:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:03,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:07,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:08,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:08,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-15 04:16:08,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:16:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5142 [2020-10-15 04:16:08,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:08,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:16:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:16:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-15 04:16:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 04:16:09,898 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 04:16:09,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:09,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:09,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:09,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:09,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 04:16:09,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:09,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:10,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:16:10,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449189127] [2020-10-15 04:16:10,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:10,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:16:10,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179143646] [2020-10-15 04:16:10,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:16:10,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:10,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:16:10,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:10,324 INFO L87 Difference]: Start difference. First operand 995 states and 1722 transitions. Second operand 5 states. [2020-10-15 04:16:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:17,212 INFO L93 Difference]: Finished difference Result 2890 states and 4998 transitions. [2020-10-15 04:16:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:16:17,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-15 04:16:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:17,237 INFO L225 Difference]: With dead ends: 2890 [2020-10-15 04:16:17,238 INFO L226 Difference]: Without dead ends: 1948 [2020-10-15 04:16:17,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:16:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2020-10-15 04:16:17,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1946. [2020-10-15 04:16:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2020-10-15 04:16:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 3354 transitions. [2020-10-15 04:16:17,370 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 3354 transitions. Word has length 221 [2020-10-15 04:16:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:17,372 INFO L479 AbstractCegarLoop]: Abstraction has 1946 states and 3354 transitions. [2020-10-15 04:16:17,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:16:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 3354 transitions. [2020-10-15 04:16:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-15 04:16:17,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:17,384 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] [2020-10-15 04:16:17,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:16:17,385 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:17,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:17,386 INFO L82 PathProgramCache]: Analyzing trace with hash -989009847, now seen corresponding path program 1 times [2020-10-15 04:16:17,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:17,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159947695] [2020-10-15 04:16:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:17,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:18,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:22,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-15 04:16:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:16:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 04:16:22,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:22,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:16:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:16:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-15 04:16:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:23,790 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 04:16:23,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:23,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:23,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:23,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 04:16:23,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:23,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:16:24,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159947695] [2020-10-15 04:16:24,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:24,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:16:24,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339326153] [2020-10-15 04:16:24,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:16:24,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:24,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:16:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:24,109 INFO L87 Difference]: Start difference. First operand 1946 states and 3354 transitions. Second operand 5 states. [2020-10-15 04:16:30,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:30,959 INFO L93 Difference]: Finished difference Result 5596 states and 9622 transitions. [2020-10-15 04:16:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:16:30,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-15 04:16:30,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:30,981 INFO L225 Difference]: With dead ends: 5596 [2020-10-15 04:16:30,981 INFO L226 Difference]: Without dead ends: 3783 [2020-10-15 04:16:30,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:16:30,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2020-10-15 04:16:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3781. [2020-10-15 04:16:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2020-10-15 04:16:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 6480 transitions. [2020-10-15 04:16:31,169 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 6480 transitions. Word has length 222 [2020-10-15 04:16:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:31,170 INFO L479 AbstractCegarLoop]: Abstraction has 3781 states and 6480 transitions. [2020-10-15 04:16:31,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:16:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 6480 transitions. [2020-10-15 04:16:31,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-15 04:16:31,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:31,184 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] [2020-10-15 04:16:31,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:16:31,185 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:31,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:31,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1307164481, now seen corresponding path program 1 times [2020-10-15 04:16:31,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:31,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985111983] [2020-10-15 04:16:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:32,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:32,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:34,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:36,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:36,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:36,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-15 04:16:36,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:16:36,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-15 04:16:36,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:36,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:16:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:16:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-15 04:16:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:37,563 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 04:16:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:37,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:37,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:37,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:37,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:37,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 04:16:37,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:37,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:37,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:16:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:16:37,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985111983] [2020-10-15 04:16:37,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:37,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:16:37,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261079122] [2020-10-15 04:16:37,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:16:37,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:37,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:16:37,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:37,774 INFO L87 Difference]: Start difference. First operand 3781 states and 6480 transitions. Second operand 5 states. [2020-10-15 04:16:44,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:44,832 INFO L93 Difference]: Finished difference Result 11045 states and 18903 transitions. [2020-10-15 04:16:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:16:44,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-15 04:16:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:44,870 INFO L225 Difference]: With dead ends: 11045 [2020-10-15 04:16:44,871 INFO L226 Difference]: Without dead ends: 7493 [2020-10-15 04:16:44,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:16:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7493 states. [2020-10-15 04:16:45,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7493 to 7491. [2020-10-15 04:16:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7491 states. [2020-10-15 04:16:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7491 states to 7491 states and 12795 transitions. [2020-10-15 04:16:45,268 INFO L78 Accepts]: Start accepts. Automaton has 7491 states and 12795 transitions. Word has length 223 [2020-10-15 04:16:45,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:45,268 INFO L479 AbstractCegarLoop]: Abstraction has 7491 states and 12795 transitions. [2020-10-15 04:16:45,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:16:45,268 INFO L276 IsEmpty]: Start isEmpty. Operand 7491 states and 12795 transitions. [2020-10-15 04:16:45,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-15 04:16:45,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:45,287 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] [2020-10-15 04:16:45,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:16:45,288 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:45,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1397347352, now seen corresponding path program 1 times [2020-10-15 04:16:45,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:45,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491904571] [2020-10-15 04:16:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:45,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:46,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:47,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:50,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:50,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-15 04:16:50,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:16:50,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:16:50,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:50,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:50,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:16:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:16:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-15 04:16:50,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:51,352 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 04:16:51,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:51,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:51,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:51,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:51,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:16:51,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:51,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:51,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:16:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:16:51,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491904571] [2020-10-15 04:16:51,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:51,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:16:51,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385049589] [2020-10-15 04:16:51,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:16:51,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:51,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:16:51,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:51,495 INFO L87 Difference]: Start difference. First operand 7491 states and 12795 transitions. Second operand 5 states. [2020-10-15 04:16:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:58,778 INFO L93 Difference]: Finished difference Result 22047 states and 37617 transitions. [2020-10-15 04:16:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:16:58,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-15 04:16:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:58,834 INFO L225 Difference]: With dead ends: 22047 [2020-10-15 04:16:58,835 INFO L226 Difference]: Without dead ends: 14809 [2020-10-15 04:16:58,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:16:58,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14809 states. [2020-10-15 04:16:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14809 to 14807. [2020-10-15 04:16:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14807 states. [2020-10-15 04:16:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 25191 transitions. [2020-10-15 04:16:59,588 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 25191 transitions. Word has length 224 [2020-10-15 04:16:59,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:59,588 INFO L479 AbstractCegarLoop]: Abstraction has 14807 states and 25191 transitions. [2020-10-15 04:16:59,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:16:59,589 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 25191 transitions. [2020-10-15 04:16:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-15 04:16:59,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:59,619 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] [2020-10-15 04:16:59,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:16:59,619 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:59,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:59,620 INFO L82 PathProgramCache]: Analyzing trace with hash -223803675, now seen corresponding path program 1 times [2020-10-15 04:16:59,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:59,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175064109] [2020-10-15 04:16:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:59,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:01,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:01,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:01,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:04,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:04,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-15 04:17:04,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:17:04,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:17:04,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:04,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:04,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-15 04:17:04,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:05,640 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 04:17:05,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:05,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:05,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:05,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:17:05,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:05,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:05,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175064109] [2020-10-15 04:17:05,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:05,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:05,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802493250] [2020-10-15 04:17:05,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:05,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:05,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:05,777 INFO L87 Difference]: Start difference. First operand 14807 states and 25191 transitions. Second operand 5 states. [2020-10-15 04:17:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:13,163 INFO L93 Difference]: Finished difference Result 42787 states and 72625 transitions. [2020-10-15 04:17:13,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:13,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-15 04:17:13,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:13,232 INFO L225 Difference]: With dead ends: 42787 [2020-10-15 04:17:13,232 INFO L226 Difference]: Without dead ends: 29033 [2020-10-15 04:17:13,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29033 states. [2020-10-15 04:17:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29033 to 29031. [2020-10-15 04:17:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29031 states. [2020-10-15 04:17:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29031 states to 29031 states and 49183 transitions. [2020-10-15 04:17:14,874 INFO L78 Accepts]: Start accepts. Automaton has 29031 states and 49183 transitions. Word has length 224 [2020-10-15 04:17:14,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:14,874 INFO L479 AbstractCegarLoop]: Abstraction has 29031 states and 49183 transitions. [2020-10-15 04:17:14,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 29031 states and 49183 transitions. [2020-10-15 04:17:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-15 04:17:14,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:14,919 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] [2020-10-15 04:17:14,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:17:14,920 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:14,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2081819957, now seen corresponding path program 1 times [2020-10-15 04:17:14,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:14,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420448558] [2020-10-15 04:17:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:15,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:16,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:16,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:16,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:18,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:20,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:20,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-15 04:17:20,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:17:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-15 04:17:20,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:20,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:17:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-15 04:17:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 04:17:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:20,925 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 04:17:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:20,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:20,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:20,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:20,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:20,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:17:20,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:20,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:21,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420448558] [2020-10-15 04:17:21,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:21,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:17:21,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224141670] [2020-10-15 04:17:21,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:17:21,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:21,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:17:21,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:21,002 INFO L87 Difference]: Start difference. First operand 29031 states and 49183 transitions. Second operand 4 states. [2020-10-15 04:17:21,878 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-15 04:17:28,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:28,765 INFO L93 Difference]: Finished difference Result 54635 states and 92065 transitions. [2020-10-15 04:17:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:28,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-10-15 04:17:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:28,857 INFO L225 Difference]: With dead ends: 54635 [2020-10-15 04:17:28,857 INFO L226 Difference]: Without dead ends: 41465 [2020-10-15 04:17:28,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41465 states. [2020-10-15 04:17:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41465 to 41399. [2020-10-15 04:17:31,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41399 states. [2020-10-15 04:17:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41399 states to 41399 states and 69775 transitions. [2020-10-15 04:17:31,287 INFO L78 Accepts]: Start accepts. Automaton has 41399 states and 69775 transitions. Word has length 225 [2020-10-15 04:17:31,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:31,288 INFO L479 AbstractCegarLoop]: Abstraction has 41399 states and 69775 transitions. [2020-10-15 04:17:31,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:17:31,288 INFO L276 IsEmpty]: Start isEmpty. Operand 41399 states and 69775 transitions. [2020-10-15 04:17:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-15 04:17:31,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:31,320 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] [2020-10-15 04:17:31,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:17:31,320 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:31,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1101272592, now seen corresponding path program 1 times [2020-10-15 04:17:31,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:31,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978552474] [2020-10-15 04:17:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:31,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:31,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:32,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:32,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:33,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:33,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:33,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:36,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:36,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:36,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-15 04:17:36,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:17:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-15 04:17:36,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:36,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-15 04:17:36,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:37,359 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 04:17:37,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:37,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:37,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:37,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:17:37,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:37,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:37,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978552474] [2020-10-15 04:17:37,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:37,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:37,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336752466] [2020-10-15 04:17:37,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:37,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:37,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:37,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:37,484 INFO L87 Difference]: Start difference. First operand 41399 states and 69775 transitions. Second operand 5 states. [2020-10-15 04:17:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:48,963 INFO L93 Difference]: Finished difference Result 121255 states and 204046 transitions. [2020-10-15 04:17:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:48,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-15 04:17:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:49,083 INFO L225 Difference]: With dead ends: 121255 [2020-10-15 04:17:49,083 INFO L226 Difference]: Without dead ends: 81077 [2020-10-15 04:17:49,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81077 states. [2020-10-15 04:17:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81077 to 81075. [2020-10-15 04:17:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81075 states. [2020-10-15 04:17:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81075 states to 81075 states and 135900 transitions. [2020-10-15 04:17:53,358 INFO L78 Accepts]: Start accepts. Automaton has 81075 states and 135900 transitions. Word has length 229 [2020-10-15 04:17:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:53,358 INFO L479 AbstractCegarLoop]: Abstraction has 81075 states and 135900 transitions. [2020-10-15 04:17:53,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand 81075 states and 135900 transitions. [2020-10-15 04:17:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-15 04:17:53,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:53,402 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] [2020-10-15 04:17:53,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:17:53,403 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:53,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:53,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1486573043, now seen corresponding path program 1 times [2020-10-15 04:17:53,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:53,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40608506] [2020-10-15 04:17:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:54,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:54,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:56,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:58,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:58,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-15 04:17:58,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:17:58,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-15 04:17:58,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:58,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-15 04:17:58,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:59,750 WARN L193 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 04:17:59,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:59,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:59,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:59,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:17:59,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:59,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:59,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40608506] [2020-10-15 04:17:59,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:59,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:59,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198473633] [2020-10-15 04:17:59,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:59,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:59,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:59,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:59,878 INFO L87 Difference]: Start difference. First operand 81075 states and 135900 transitions. Second operand 5 states. [2020-10-15 04:18:17,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:17,250 INFO L93 Difference]: Finished difference Result 239343 states and 400802 transitions. [2020-10-15 04:18:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:17,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-15 04:18:17,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:17,511 INFO L225 Difference]: With dead ends: 239343 [2020-10-15 04:18:17,511 INFO L226 Difference]: Without dead ends: 159709 [2020-10-15 04:18:17,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159709 states. [2020-10-15 04:18:31,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159709 to 159707. [2020-10-15 04:18:31,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159707 states. [2020-10-15 04:18:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159707 states to 159707 states and 266616 transitions. [2020-10-15 04:18:31,553 INFO L78 Accepts]: Start accepts. Automaton has 159707 states and 266616 transitions. Word has length 230 [2020-10-15 04:18:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:31,554 INFO L479 AbstractCegarLoop]: Abstraction has 159707 states and 266616 transitions. [2020-10-15 04:18:31,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 159707 states and 266616 transitions. [2020-10-15 04:18:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-15 04:18:31,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:31,636 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] [2020-10-15 04:18:31,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:18:31,636 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:31,636 INFO L82 PathProgramCache]: Analyzing trace with hash 131847969, now seen corresponding path program 1 times [2020-10-15 04:18:31,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:31,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404390749] [2020-10-15 04:18:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:32,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:32,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:33,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:34,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:34,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:35,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:36,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:36,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:36,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-15 04:18:36,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:18:36,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-15 04:18:36,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:36,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-15 04:18:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:37,860 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 04:18:37,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:37,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:37,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:37,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:18:37,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:37,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:38,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404390749] [2020-10-15 04:18:38,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:38,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:38,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122522107] [2020-10-15 04:18:38,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:38,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:38,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:38,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:38,055 INFO L87 Difference]: Start difference. First operand 159707 states and 266616 transitions. Second operand 5 states. [2020-10-15 04:19:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:11,156 INFO L93 Difference]: Finished difference Result 473883 states and 790874 transitions. [2020-10-15 04:19:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:19:11,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2020-10-15 04:19:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:11,583 INFO L225 Difference]: With dead ends: 473883 [2020-10-15 04:19:11,583 INFO L226 Difference]: Without dead ends: 315929 [2020-10-15 04:19:11,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:19:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315929 states.