/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_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:46:50,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:46:50,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:46:50,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:46:50,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:46:50,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:46:50,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:46:50,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:46:50,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:46:50,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:46:50,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:46:50,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:46:50,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:46:50,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:46:50,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:46:50,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:46:50,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:46:50,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:46:50,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:46:50,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:46:50,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:46:50,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:46:50,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:46:50,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:46:50,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:46:50,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:46:50,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:46:50,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:46:50,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:46:50,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:46:50,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:46:50,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:46:50,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:46:50,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:46:50,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:46:50,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:46:50,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:46:50,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:46:50,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:46:50,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:46:50,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:46:50,466 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 03:46:50,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:46:50,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:46:50,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:46:50,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:46:50,488 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:46:50,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:46:50,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:46:50,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:46:50,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:46:50,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:46:50,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:46:50,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:46:50,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:46:50,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:46:50,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:46:50,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:46:50,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:46:50,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:46:50,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:46:50,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:46:50,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:46:50,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:46:50,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:46:50,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:46:50,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:46:50,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:46:50,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:46:50,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:46:50,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:46:50,493 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 03:46:50,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:46:50,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:46:50,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:46:50,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:46:50,866 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:46:50,867 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:46:50,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e046ec63d/522c37da05b744e39e0930541d0674f8/FLAG100b6a871 [2020-10-15 03:46:51,440 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:46:51,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:46:51,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e046ec63d/522c37da05b744e39e0930541d0674f8/FLAG100b6a871 [2020-10-15 03:46:51,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e046ec63d/522c37da05b744e39e0930541d0674f8 [2020-10-15 03:46:51,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:46:51,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:46:51,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:46:51,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:46:51,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:46:51,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:46:51" (1/1) ... [2020-10-15 03:46:51,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d5df5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:51, skipping insertion in model container [2020-10-15 03:46:51,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:46:51" (1/1) ... [2020-10-15 03:46:51,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:46:51,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:46:52,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:46:52,411 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:46:52,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:46:52,531 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:46:52,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:52 WrapperNode [2020-10-15 03:46:52,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:46:52,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:46:52,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:46:52,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:46:52,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:52" (1/1) ... [2020-10-15 03:46:52,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:52" (1/1) ... [2020-10-15 03:46:52,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:52" (1/1) ... [2020-10-15 03:46:52,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:52" (1/1) ... [2020-10-15 03:46:52,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:52" (1/1) ... [2020-10-15 03:46:52,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:52" (1/1) ... [2020-10-15 03:46:52,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:52" (1/1) ... [2020-10-15 03:46:52,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:46:52,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:46:52,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:46:52,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:46:52,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:52" (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 03:46:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:46:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:46:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:46:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:46:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:46:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:46:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:46:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:46:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:46:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:46:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:46:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:46:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:46:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:46:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:46:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:46:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:46:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:46:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:46:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:46:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:46:53,431 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:46:53,432 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:46:53,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:46:53 BoogieIcfgContainer [2020-10-15 03:46:53,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:46:53,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:46:53,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:46:53,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:46:53,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:46:51" (1/3) ... [2020-10-15 03:46:53,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@960bb17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:46:53, skipping insertion in model container [2020-10-15 03:46:53,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:52" (2/3) ... [2020-10-15 03:46:53,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@960bb17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:46:53, skipping insertion in model container [2020-10-15 03:46:53,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:46:53" (3/3) ... [2020-10-15 03:46:53,447 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:46:53,459 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:46:53,467 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:46:53,482 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:46:53,510 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:46:53,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:46:53,511 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:46:53,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:46:53,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:46:53,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:46:53,511 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:46:53,512 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:46:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-10-15 03:46:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:46:53,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:53,547 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] [2020-10-15 03:46:53,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:53,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1190529644, now seen corresponding path program 1 times [2020-10-15 03:46:53,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:53,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236869863] [2020-10-15 03:46:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:54,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:55,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:55,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:46:55,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:46:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-10-15 03:46:55,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:55,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:46:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:46:55,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:46:55,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:46:56,147 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:46:56,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:56,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:56,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:56,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:56,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:46:56,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:56,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:56,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:46:56,206 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 03:46:56,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236869863] [2020-10-15 03:46:56,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:56,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:46:56,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872678843] [2020-10-15 03:46:56,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:46:56,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:56,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:46:56,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:46:56,235 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 7 states. [2020-10-15 03:46:56,465 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 03:46:57,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:57,408 INFO L93 Difference]: Finished difference Result 616 states and 991 transitions. [2020-10-15 03:46:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:46:57,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-15 03:46:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:57,430 INFO L225 Difference]: With dead ends: 616 [2020-10-15 03:46:57,430 INFO L226 Difference]: Without dead ends: 516 [2020-10-15 03:46:57,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:46:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-15 03:46:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 265. [2020-10-15 03:46:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-15 03:46:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 394 transitions. [2020-10-15 03:46:57,511 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 394 transitions. Word has length 68 [2020-10-15 03:46:57,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:57,512 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 394 transitions. [2020-10-15 03:46:57,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:46:57,512 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 394 transitions. [2020-10-15 03:46:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:46:57,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:57,515 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] [2020-10-15 03:46:57,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:46:57,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:57,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2007858360, now seen corresponding path program 1 times [2020-10-15 03:46:57,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:57,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031019531] [2020-10-15 03:46:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:57,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:58,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:58,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:46:58,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:46:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-15 03:46:58,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:58,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:58,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:46:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:46:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:46:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:46:58,788 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:46:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:58,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:58,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:58,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:58,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:58,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:46:58,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:58,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:58,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:58,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:58,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-15 03:46:58,844 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 03:46:58,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031019531] [2020-10-15 03:46:58,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:58,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:46:58,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283000400] [2020-10-15 03:46:58,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:46:58,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:58,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:46:58,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:46:58,849 INFO L87 Difference]: Start difference. First operand 265 states and 394 transitions. Second operand 7 states. [2020-10-15 03:47:00,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:00,196 INFO L93 Difference]: Finished difference Result 973 states and 1490 transitions. [2020-10-15 03:47:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:47:00,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-15 03:47:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:00,202 INFO L225 Difference]: With dead ends: 973 [2020-10-15 03:47:00,202 INFO L226 Difference]: Without dead ends: 771 [2020-10-15 03:47:00,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:47:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-10-15 03:47:00,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 765. [2020-10-15 03:47:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-10-15 03:47:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1161 transitions. [2020-10-15 03:47:00,272 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1161 transitions. Word has length 69 [2020-10-15 03:47:00,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:00,272 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 1161 transitions. [2020-10-15 03:47:00,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:47:00,273 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1161 transitions. [2020-10-15 03:47:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:47:00,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:00,276 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] [2020-10-15 03:47:00,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:47:00,277 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:00,277 INFO L82 PathProgramCache]: Analyzing trace with hash 525305437, now seen corresponding path program 1 times [2020-10-15 03:47:00,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:00,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162345750] [2020-10-15 03:47:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:00,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:00,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:00,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:47:00,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:47:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-15 03:47:00,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:00,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:47:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:47:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:47:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:01,035 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:01,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:01,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:01,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:01,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:01,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:01,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:47:01,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:01,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:47:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:47:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:01,098 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 03:47:01,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162345750] [2020-10-15 03:47:01,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:01,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:47:01,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556479496] [2020-10-15 03:47:01,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:47:01,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:01,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:47:01,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:47:01,101 INFO L87 Difference]: Start difference. First operand 765 states and 1161 transitions. Second operand 6 states. [2020-10-15 03:47:01,360 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 03:47:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:02,071 INFO L93 Difference]: Finished difference Result 2043 states and 3137 transitions. [2020-10-15 03:47:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:47:02,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:47:02,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:02,079 INFO L225 Difference]: With dead ends: 2043 [2020-10-15 03:47:02,079 INFO L226 Difference]: Without dead ends: 1329 [2020-10-15 03:47:02,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:47:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-15 03:47:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1327. [2020-10-15 03:47:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-10-15 03:47:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 2020 transitions. [2020-10-15 03:47:02,168 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 2020 transitions. Word has length 70 [2020-10-15 03:47:02,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:02,169 INFO L479 AbstractCegarLoop]: Abstraction has 1327 states and 2020 transitions. [2020-10-15 03:47:02,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:47:02,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 2020 transitions. [2020-10-15 03:47:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:47:02,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:02,173 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] [2020-10-15 03:47:02,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:47:02,173 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:02,174 INFO L82 PathProgramCache]: Analyzing trace with hash -68488321, now seen corresponding path program 1 times [2020-10-15 03:47:02,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:02,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700348279] [2020-10-15 03:47:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:02,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:02,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:02,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:47:02,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:47:02,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-10-15 03:47:02,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:02,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:02,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:47:02,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:47:02,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:47:02,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:03,024 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:03,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:03,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:03,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:03,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:03,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:47:03,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:03,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:47:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:47:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:03,078 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 03:47:03,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700348279] [2020-10-15 03:47:03,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:03,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:47:03,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513524065] [2020-10-15 03:47:03,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:47:03,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:03,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:47:03,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:47:03,082 INFO L87 Difference]: Start difference. First operand 1327 states and 2020 transitions. Second operand 6 states. [2020-10-15 03:47:03,231 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:47:04,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:04,054 INFO L93 Difference]: Finished difference Result 3523 states and 5406 transitions. [2020-10-15 03:47:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:47:04,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:47:04,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:04,067 INFO L225 Difference]: With dead ends: 3523 [2020-10-15 03:47:04,068 INFO L226 Difference]: Without dead ends: 2297 [2020-10-15 03:47:04,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:47:04,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-10-15 03:47:04,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2295. [2020-10-15 03:47:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-10-15 03:47:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3492 transitions. [2020-10-15 03:47:04,244 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3492 transitions. Word has length 70 [2020-10-15 03:47:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:04,244 INFO L479 AbstractCegarLoop]: Abstraction has 2295 states and 3492 transitions. [2020-10-15 03:47:04,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:47:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3492 transitions. [2020-10-15 03:47:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:47:04,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:04,247 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] [2020-10-15 03:47:04,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:47:04,248 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:04,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1765795566, now seen corresponding path program 1 times [2020-10-15 03:47:04,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:04,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000782353] [2020-10-15 03:47:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:04,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:04,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:04,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:47:04,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:47:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-15 03:47:04,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:04,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:47:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:47:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:47:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:05,041 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:05,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:05,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:05,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:05,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:47:05,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:05,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:47:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:47:05,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:05,087 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 03:47:05,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000782353] [2020-10-15 03:47:05,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:05,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:47:05,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503522437] [2020-10-15 03:47:05,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:47:05,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:05,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:47:05,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:47:05,090 INFO L87 Difference]: Start difference. First operand 2295 states and 3492 transitions. Second operand 6 states. [2020-10-15 03:47:05,250 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:47:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:06,189 INFO L93 Difference]: Finished difference Result 6502 states and 9923 transitions. [2020-10-15 03:47:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:47:06,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:47:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:06,211 INFO L225 Difference]: With dead ends: 6502 [2020-10-15 03:47:06,211 INFO L226 Difference]: Without dead ends: 4281 [2020-10-15 03:47:06,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:47:06,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2020-10-15 03:47:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 4279. [2020-10-15 03:47:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4279 states. [2020-10-15 03:47:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 6476 transitions. [2020-10-15 03:47:06,550 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 6476 transitions. Word has length 70 [2020-10-15 03:47:06,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:06,551 INFO L479 AbstractCegarLoop]: Abstraction has 4279 states and 6476 transitions. [2020-10-15 03:47:06,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:47:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 6476 transitions. [2020-10-15 03:47:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:47:06,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:06,553 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] [2020-10-15 03:47:06,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:47:06,554 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:06,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1997372051, now seen corresponding path program 1 times [2020-10-15 03:47:06,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:06,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344426691] [2020-10-15 03:47:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:06,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:09,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:09,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:47:09,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:47:09,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2600 [2020-10-15 03:47:09,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:09,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:47:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:47:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:47:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:09,461 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:09,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:09,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:09,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:09,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:09,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:09,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:47:09,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:09,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:09,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:09,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:09,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:09,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:09,491 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 03:47:09,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344426691] [2020-10-15 03:47:09,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:09,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:47:09,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776741108] [2020-10-15 03:47:09,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:47:09,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:09,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:47:09,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:47:09,493 INFO L87 Difference]: Start difference. First operand 4279 states and 6476 transitions. Second operand 9 states. [2020-10-15 03:47:09,682 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:47:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:13,202 INFO L93 Difference]: Finished difference Result 23779 states and 36084 transitions. [2020-10-15 03:47:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:47:13,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-15 03:47:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:13,292 INFO L225 Difference]: With dead ends: 23779 [2020-10-15 03:47:13,292 INFO L226 Difference]: Without dead ends: 20769 [2020-10-15 03:47:13,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:47:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20769 states. [2020-10-15 03:47:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20769 to 4380. [2020-10-15 03:47:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4380 states. [2020-10-15 03:47:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 6609 transitions. [2020-10-15 03:47:13,979 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 6609 transitions. Word has length 71 [2020-10-15 03:47:13,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:13,979 INFO L479 AbstractCegarLoop]: Abstraction has 4380 states and 6609 transitions. [2020-10-15 03:47:13,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:47:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 6609 transitions. [2020-10-15 03:47:13,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:47:13,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:13,982 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] [2020-10-15 03:47:13,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:47:13,983 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:13,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:13,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1201928659, now seen corresponding path program 1 times [2020-10-15 03:47:13,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:13,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345340650] [2020-10-15 03:47:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:14,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:14,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:15,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:15,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:47:15,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:47:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1957 [2020-10-15 03:47:15,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:15,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:15,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:47:15,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:47:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:47:15,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 03:47:16,219 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-10-15 03:47:16,434 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:16,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:16,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:16,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:16,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:16,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:47:16,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:16,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:16,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:16,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:16,495 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 03:47:16,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345340650] [2020-10-15 03:47:16,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:16,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:47:16,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738566464] [2020-10-15 03:47:16,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:47:16,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:16,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:47:16,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:47:16,499 INFO L87 Difference]: Start difference. First operand 4380 states and 6609 transitions. Second operand 9 states. [2020-10-15 03:47:16,762 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:47:20,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:20,887 INFO L93 Difference]: Finished difference Result 19358 states and 29312 transitions. [2020-10-15 03:47:20,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 03:47:20,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-15 03:47:20,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:20,919 INFO L225 Difference]: With dead ends: 19358 [2020-10-15 03:47:20,919 INFO L226 Difference]: Without dead ends: 18196 [2020-10-15 03:47:20,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-15 03:47:20,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18196 states. [2020-10-15 03:47:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18196 to 4380. [2020-10-15 03:47:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4380 states. [2020-10-15 03:47:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 6607 transitions. [2020-10-15 03:47:21,465 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 6607 transitions. Word has length 71 [2020-10-15 03:47:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:21,466 INFO L479 AbstractCegarLoop]: Abstraction has 4380 states and 6607 transitions. [2020-10-15 03:47:21,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:47:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 6607 transitions. [2020-10-15 03:47:21,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:47:21,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:21,469 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] [2020-10-15 03:47:21,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:47:21,469 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:21,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:21,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1046256179, now seen corresponding path program 1 times [2020-10-15 03:47:21,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:21,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565010665] [2020-10-15 03:47:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:22,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:22,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:47:22,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:47:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-10-15 03:47:22,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:22,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:47:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:47:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:47:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:22,977 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:22,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:22,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:22,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:22,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:47:22,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:22,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:23,009 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 03:47:23,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565010665] [2020-10-15 03:47:23,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:23,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:47:23,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238414190] [2020-10-15 03:47:23,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:47:23,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:23,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:47:23,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:47:23,012 INFO L87 Difference]: Start difference. First operand 4380 states and 6607 transitions. Second operand 9 states. [2020-10-15 03:47:23,183 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:47:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:27,501 INFO L93 Difference]: Finished difference Result 21495 states and 32582 transitions. [2020-10-15 03:47:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:47:27,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-15 03:47:27,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:27,530 INFO L225 Difference]: With dead ends: 21495 [2020-10-15 03:47:27,531 INFO L226 Difference]: Without dead ends: 19437 [2020-10-15 03:47:27,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:47:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19437 states. [2020-10-15 03:47:28,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19437 to 4533. [2020-10-15 03:47:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4533 states. [2020-10-15 03:47:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4533 states to 4533 states and 6809 transitions. [2020-10-15 03:47:28,110 INFO L78 Accepts]: Start accepts. Automaton has 4533 states and 6809 transitions. Word has length 71 [2020-10-15 03:47:28,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:28,110 INFO L479 AbstractCegarLoop]: Abstraction has 4533 states and 6809 transitions. [2020-10-15 03:47:28,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:47:28,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4533 states and 6809 transitions. [2020-10-15 03:47:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:47:28,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:28,113 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] [2020-10-15 03:47:28,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:47:28,114 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:28,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1192341100, now seen corresponding path program 1 times [2020-10-15 03:47:28,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:28,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248118144] [2020-10-15 03:47:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:28,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:28,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:28,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:47:28,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:47:28,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-15 03:47:28,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:28,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:47:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:47:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:47:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:28,675 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:28,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:28,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:28,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:28,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:28,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:28,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:47:28,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:28,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:47:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:47:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:47:28,745 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 03:47:28,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248118144] [2020-10-15 03:47:28,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:28,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:47:28,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390177482] [2020-10-15 03:47:28,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:47:28,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:28,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:47:28,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:47:28,750 INFO L87 Difference]: Start difference. First operand 4533 states and 6809 transitions. Second operand 6 states. [2020-10-15 03:47:28,969 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:47:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:30,918 INFO L93 Difference]: Finished difference Result 13120 states and 19757 transitions. [2020-10-15 03:47:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:47:30,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:47:30,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:30,941 INFO L225 Difference]: With dead ends: 13120 [2020-10-15 03:47:30,941 INFO L226 Difference]: Without dead ends: 8640 [2020-10-15 03:47:30,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:47:30,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8640 states. [2020-10-15 03:47:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8640 to 8638. [2020-10-15 03:47:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8638 states. [2020-10-15 03:47:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8638 states to 8638 states and 12941 transitions. [2020-10-15 03:47:31,896 INFO L78 Accepts]: Start accepts. Automaton has 8638 states and 12941 transitions. Word has length 71 [2020-10-15 03:47:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:31,897 INFO L479 AbstractCegarLoop]: Abstraction has 8638 states and 12941 transitions. [2020-10-15 03:47:31,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:47:31,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8638 states and 12941 transitions. [2020-10-15 03:47:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:47:31,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:31,901 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] [2020-10-15 03:47:31,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:47:31,902 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:31,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:31,902 INFO L82 PathProgramCache]: Analyzing trace with hash 11148810, now seen corresponding path program 1 times [2020-10-15 03:47:31,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:31,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484489186] [2020-10-15 03:47:31,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:32,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:32,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:47:32,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:32,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-15 03:47:32,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:32,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:47:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-15 03:47:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:47:32,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:32,226 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:32,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:32,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:32,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:32,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:32,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:32,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:47:32,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:32,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:32,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:32,264 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 03:47:32,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484489186] [2020-10-15 03:47:32,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:32,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:47:32,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028091668] [2020-10-15 03:47:32,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:47:32,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:32,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:47:32,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:47:32,266 INFO L87 Difference]: Start difference. First operand 8638 states and 12941 transitions. Second operand 5 states. [2020-10-15 03:47:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:34,544 INFO L93 Difference]: Finished difference Result 16432 states and 24638 transitions. [2020-10-15 03:47:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:47:34,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 03:47:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:34,572 INFO L225 Difference]: With dead ends: 16432 [2020-10-15 03:47:34,572 INFO L226 Difference]: Without dead ends: 16430 [2020-10-15 03:47:34,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:47:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16430 states. [2020-10-15 03:47:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16430 to 8894. [2020-10-15 03:47:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8894 states. [2020-10-15 03:47:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8894 states to 8894 states and 13197 transitions. [2020-10-15 03:47:36,004 INFO L78 Accepts]: Start accepts. Automaton has 8894 states and 13197 transitions. Word has length 72 [2020-10-15 03:47:36,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:36,004 INFO L479 AbstractCegarLoop]: Abstraction has 8894 states and 13197 transitions. [2020-10-15 03:47:36,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:47:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 8894 states and 13197 transitions. [2020-10-15 03:47:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:47:36,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:36,009 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] [2020-10-15 03:47:36,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:47:36,009 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:36,009 INFO L82 PathProgramCache]: Analyzing trace with hash 604047358, now seen corresponding path program 1 times [2020-10-15 03:47:36,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:36,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126638768] [2020-10-15 03:47:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:36,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:36,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:47:36,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-15 03:47:36,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:36,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:47:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:47:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:47:36,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:36,364 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:36,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:36,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:36,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:47:36,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:36,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:36,412 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 03:47:36,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126638768] [2020-10-15 03:47:36,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:36,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:47:36,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923319917] [2020-10-15 03:47:36,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:47:36,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:36,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:47:36,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:47:36,414 INFO L87 Difference]: Start difference. First operand 8894 states and 13197 transitions. Second operand 5 states. [2020-10-15 03:47:36,558 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 03:47:38,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:38,961 INFO L93 Difference]: Finished difference Result 23190 states and 34467 transitions. [2020-10-15 03:47:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:47:38,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 03:47:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:38,981 INFO L225 Difference]: With dead ends: 23190 [2020-10-15 03:47:38,981 INFO L226 Difference]: Without dead ends: 15396 [2020-10-15 03:47:38,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:47:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15396 states. [2020-10-15 03:47:40,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15396 to 15394. [2020-10-15 03:47:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15394 states. [2020-10-15 03:47:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15394 states to 15394 states and 22649 transitions. [2020-10-15 03:47:40,722 INFO L78 Accepts]: Start accepts. Automaton has 15394 states and 22649 transitions. Word has length 73 [2020-10-15 03:47:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:40,722 INFO L479 AbstractCegarLoop]: Abstraction has 15394 states and 22649 transitions. [2020-10-15 03:47:40,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:47:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15394 states and 22649 transitions. [2020-10-15 03:47:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:47:40,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:40,728 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] [2020-10-15 03:47:40,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:47:40,729 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash -501731091, now seen corresponding path program 1 times [2020-10-15 03:47:40,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:40,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300585561] [2020-10-15 03:47:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:40,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:41,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:42,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:42,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:47:42,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:47:42,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1805 [2020-10-15 03:47:42,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:42,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:47:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:47:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:47:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:42,748 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:42,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:42,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:42,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:42,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:47:42,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:42,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:42,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:42,774 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 03:47:42,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300585561] [2020-10-15 03:47:42,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:42,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:47:42,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405303931] [2020-10-15 03:47:42,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:47:42,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:42,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:47:42,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:47:42,776 INFO L87 Difference]: Start difference. First operand 15394 states and 22649 transitions. Second operand 7 states. [2020-10-15 03:47:42,958 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:47:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:47,896 INFO L93 Difference]: Finished difference Result 45411 states and 67552 transitions. [2020-10-15 03:47:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:47:47,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-10-15 03:47:47,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:47,937 INFO L225 Difference]: With dead ends: 45411 [2020-10-15 03:47:47,938 INFO L226 Difference]: Without dead ends: 38397 [2020-10-15 03:47:47,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:47:47,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38397 states. [2020-10-15 03:47:51,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38397 to 25851. [2020-10-15 03:47:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25851 states. [2020-10-15 03:47:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25851 states to 25851 states and 38137 transitions. [2020-10-15 03:47:51,554 INFO L78 Accepts]: Start accepts. Automaton has 25851 states and 38137 transitions. Word has length 73 [2020-10-15 03:47:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:51,554 INFO L479 AbstractCegarLoop]: Abstraction has 25851 states and 38137 transitions. [2020-10-15 03:47:51,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:47:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 25851 states and 38137 transitions. [2020-10-15 03:47:51,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:47:51,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:51,558 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] [2020-10-15 03:47:51,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:47:51,559 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:51,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:51,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1004340115, now seen corresponding path program 1 times [2020-10-15 03:47:51,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:51,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40011817] [2020-10-15 03:47:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:51,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:51,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:52,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:53,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:53,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:47:53,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:47:53,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-10-15 03:47:53,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:53,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:53,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:47:53,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:47:53,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:47:53,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:53,431 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:47:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:53,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:53,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:53,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:53,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:47:53,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:53,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:53,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:53,457 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 03:47:53,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40011817] [2020-10-15 03:47:53,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:53,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:47:53,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421249036] [2020-10-15 03:47:53,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:47:53,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:53,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:47:53,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:47:53,459 INFO L87 Difference]: Start difference. First operand 25851 states and 38137 transitions. Second operand 7 states. [2020-10-15 03:47:53,635 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:47:59,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:59,548 INFO L93 Difference]: Finished difference Result 54733 states and 80924 transitions. [2020-10-15 03:47:59,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:47:59,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-10-15 03:47:59,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:59,593 INFO L225 Difference]: With dead ends: 54733 [2020-10-15 03:47:59,593 INFO L226 Difference]: Without dead ends: 43811 [2020-10-15 03:47:59,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:47:59,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43811 states. [2020-10-15 03:48:03,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43811 to 29068. [2020-10-15 03:48:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29068 states. [2020-10-15 03:48:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29068 states to 29068 states and 42861 transitions. [2020-10-15 03:48:03,133 INFO L78 Accepts]: Start accepts. Automaton has 29068 states and 42861 transitions. Word has length 73 [2020-10-15 03:48:03,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:48:03,133 INFO L479 AbstractCegarLoop]: Abstraction has 29068 states and 42861 transitions. [2020-10-15 03:48:03,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:48:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 29068 states and 42861 transitions. [2020-10-15 03:48:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:48:03,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:48:03,136 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] [2020-10-15 03:48:03,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:48:03,137 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:48:03,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:48:03,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1106502411, now seen corresponding path program 1 times [2020-10-15 03:48:03,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:48:03,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179429466] [2020-10-15 03:48:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:48:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:03,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:03,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:04,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:04,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:48:04,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:48:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1152 [2020-10-15 03:48:04,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:04,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:48:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:48:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:48:04,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:48:04,554 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:48:04,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:48:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:04,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:04,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:04,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:48:04,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:48:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:48:04,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:04,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:48:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:48:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:48:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:48:04,606 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 03:48:04,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179429466] [2020-10-15 03:48:04,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:48:04,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:48:04,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897882162] [2020-10-15 03:48:04,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:48:04,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:48:04,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:48:04,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:48:04,610 INFO L87 Difference]: Start difference. First operand 29068 states and 42861 transitions. Second operand 7 states. [2020-10-15 03:48:04,838 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:48:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:11,765 INFO L93 Difference]: Finished difference Result 51676 states and 76116 transitions. [2020-10-15 03:48:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:48:11,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-10-15 03:48:11,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:48:11,823 INFO L225 Difference]: With dead ends: 51676 [2020-10-15 03:48:11,823 INFO L226 Difference]: Without dead ends: 47658 [2020-10-15 03:48:11,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:48:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47658 states. [2020-10-15 03:48:15,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47658 to 31123. [2020-10-15 03:48:15,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31123 states. [2020-10-15 03:48:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31123 states to 31123 states and 45860 transitions. [2020-10-15 03:48:15,918 INFO L78 Accepts]: Start accepts. Automaton has 31123 states and 45860 transitions. Word has length 73 [2020-10-15 03:48:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:48:15,918 INFO L479 AbstractCegarLoop]: Abstraction has 31123 states and 45860 transitions. [2020-10-15 03:48:15,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:48:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 31123 states and 45860 transitions. [2020-10-15 03:48:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:48:15,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:48:15,921 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] [2020-10-15 03:48:15,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:48:15,921 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:48:15,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:48:15,922 INFO L82 PathProgramCache]: Analyzing trace with hash -764271808, now seen corresponding path program 1 times [2020-10-15 03:48:15,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:48:15,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551403061] [2020-10-15 03:48:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:48:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:16,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:18,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:18,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:48:18,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:48:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2436 [2020-10-15 03:48:18,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:18,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:48:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:48:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:48:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:48:18,603 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:48:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:48:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:18,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:18,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:18,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:48:18,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:48:18,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:48:18,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:18,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:48:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:48:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:48:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:48:18,643 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 03:48:18,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551403061] [2020-10-15 03:48:18,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:48:18,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:48:18,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829250269] [2020-10-15 03:48:18,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:48:18,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:48:18,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:48:18,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:48:18,646 INFO L87 Difference]: Start difference. First operand 31123 states and 45860 transitions. Second operand 7 states. [2020-10-15 03:48:18,868 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:48:26,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:26,987 INFO L93 Difference]: Finished difference Result 63830 states and 94104 transitions. [2020-10-15 03:48:26,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:48:26,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 03:48:26,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:48:27,050 INFO L225 Difference]: With dead ends: 63830 [2020-10-15 03:48:27,050 INFO L226 Difference]: Without dead ends: 52836 [2020-10-15 03:48:27,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:48:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52836 states. [2020-10-15 03:48:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52836 to 36080. [2020-10-15 03:48:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36080 states. [2020-10-15 03:48:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36080 states to 36080 states and 53156 transitions. [2020-10-15 03:48:31,714 INFO L78 Accepts]: Start accepts. Automaton has 36080 states and 53156 transitions. Word has length 74 [2020-10-15 03:48:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:48:31,714 INFO L479 AbstractCegarLoop]: Abstraction has 36080 states and 53156 transitions. [2020-10-15 03:48:31,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:48:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 36080 states and 53156 transitions. [2020-10-15 03:48:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:48:31,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:48:31,718 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] [2020-10-15 03:48:31,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:48:31,718 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:48:31,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:48:31,718 INFO L82 PathProgramCache]: Analyzing trace with hash -248342337, now seen corresponding path program 1 times [2020-10-15 03:48:31,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:48:31,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790629426] [2020-10-15 03:48:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:48:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:35,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:35,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:48:35,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:48:35,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3328 [2020-10-15 03:48:35,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:35,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:48:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:48:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 03:48:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:48:35,366 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:48:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:48:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:35,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:35,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:48:35,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:48:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:48:35,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:35,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:48:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:48:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:48:35,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:48:35,434 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 03:48:35,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790629426] [2020-10-15 03:48:35,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:48:35,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:48:35,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112414582] [2020-10-15 03:48:35,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:48:35,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:48:35,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:48:35,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:48:35,448 INFO L87 Difference]: Start difference. First operand 36080 states and 53156 transitions. Second operand 8 states. [2020-10-15 03:48:35,604 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:48:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:59,997 INFO L93 Difference]: Finished difference Result 198893 states and 290413 transitions. [2020-10-15 03:48:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:48:59,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-15 03:48:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:00,212 INFO L225 Difference]: With dead ends: 198893 [2020-10-15 03:49:00,212 INFO L226 Difference]: Without dead ends: 163960 [2020-10-15 03:49:00,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:49:00,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163960 states. [2020-10-15 03:49:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163960 to 36250. [2020-10-15 03:49:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36250 states. [2020-10-15 03:49:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36250 states to 36250 states and 53078 transitions. [2020-10-15 03:49:06,163 INFO L78 Accepts]: Start accepts. Automaton has 36250 states and 53078 transitions. Word has length 76 [2020-10-15 03:49:06,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:06,163 INFO L479 AbstractCegarLoop]: Abstraction has 36250 states and 53078 transitions. [2020-10-15 03:49:06,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:49:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 36250 states and 53078 transitions. [2020-10-15 03:49:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:49:06,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:06,168 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] [2020-10-15 03:49:06,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:49:06,169 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:06,169 INFO L82 PathProgramCache]: Analyzing trace with hash -329930941, now seen corresponding path program 1 times [2020-10-15 03:49:06,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:06,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634612592] [2020-10-15 03:49:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:06,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:06,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:06,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:06,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:06,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:08,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:11,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:11,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:49:11,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:49:11,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:49:11,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:11,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:49:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:49:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:11,431 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:49:11,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:11,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:11,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:11,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:11,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:11,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:49:11,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:11,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:11,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:11,469 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 03:49:11,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634612592] [2020-10-15 03:49:11,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:11,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:11,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436946500] [2020-10-15 03:49:11,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:49:11,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:11,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:49:11,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:49:11,471 INFO L87 Difference]: Start difference. First operand 36250 states and 53078 transitions. Second operand 8 states. [2020-10-15 03:49:11,623 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:49:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:48,362 INFO L93 Difference]: Finished difference Result 261250 states and 381341 transitions. [2020-10-15 03:49:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:49:48,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-15 03:49:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:48,670 INFO L225 Difference]: With dead ends: 261250 [2020-10-15 03:49:48,671 INFO L226 Difference]: Without dead ends: 226074 [2020-10-15 03:49:48,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:49:48,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226074 states. [2020-10-15 03:49:57,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226074 to 36182. [2020-10-15 03:49:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36182 states. [2020-10-15 03:49:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36182 states to 36182 states and 52734 transitions. [2020-10-15 03:49:57,766 INFO L78 Accepts]: Start accepts. Automaton has 36182 states and 52734 transitions. Word has length 76 [2020-10-15 03:49:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:57,766 INFO L479 AbstractCegarLoop]: Abstraction has 36182 states and 52734 transitions. [2020-10-15 03:49:57,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:49:57,767 INFO L276 IsEmpty]: Start isEmpty. Operand 36182 states and 52734 transitions. [2020-10-15 03:49:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:49:57,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:57,771 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] [2020-10-15 03:49:57,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:49:57,771 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:57,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:57,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1170020865, now seen corresponding path program 1 times [2020-10-15 03:49:57,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:57,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314172012] [2020-10-15 03:49:57,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:57,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:57,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:57,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:01,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:01,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:50:01,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:50:01,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3434 [2020-10-15 03:50:01,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:01,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:01,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:50:01,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:50:01,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:50:01,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:01,464 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:50:01,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:01,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:01,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:01,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:01,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:01,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:50:01,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:01,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:50:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:50:01,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:01,501 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 03:50:01,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314172012] [2020-10-15 03:50:01,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:01,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:50:01,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912789127] [2020-10-15 03:50:01,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:50:01,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:01,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:50:01,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:50:01,503 INFO L87 Difference]: Start difference. First operand 36182 states and 52734 transitions. Second operand 8 states. [2020-10-15 03:50:01,654 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:50:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:23,615 INFO L93 Difference]: Finished difference Result 157301 states and 227775 transitions. [2020-10-15 03:50:23,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:50:23,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-15 03:50:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:23,771 INFO L225 Difference]: With dead ends: 157301 [2020-10-15 03:50:23,771 INFO L226 Difference]: Without dead ends: 122109 [2020-10-15 03:50:23,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:50:23,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122109 states. [2020-10-15 03:50:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122109 to 35956. [2020-10-15 03:50:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35956 states. [2020-10-15 03:50:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35956 states to 35956 states and 52212 transitions. [2020-10-15 03:50:30,328 INFO L78 Accepts]: Start accepts. Automaton has 35956 states and 52212 transitions. Word has length 76 [2020-10-15 03:50:30,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:30,329 INFO L479 AbstractCegarLoop]: Abstraction has 35956 states and 52212 transitions. [2020-10-15 03:50:30,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:50:30,329 INFO L276 IsEmpty]: Start isEmpty. Operand 35956 states and 52212 transitions. [2020-10-15 03:50:30,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:50:30,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:30,333 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] [2020-10-15 03:50:30,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:50:30,333 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:30,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2020334911, now seen corresponding path program 1 times [2020-10-15 03:50:30,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:30,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690980634] [2020-10-15 03:50:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:30,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:30,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:30,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:30,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:34,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:34,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:50:34,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:50:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4490 [2020-10-15 03:50:34,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:34,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:50:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:50:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:50:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:35,016 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:50:35,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:35,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:35,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:35,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:35,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:50:35,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:35,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:50:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:50:35,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:35,040 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 03:50:35,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690980634] [2020-10-15 03:50:35,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:35,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:50:35,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530816941] [2020-10-15 03:50:35,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:50:35,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:35,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:50:35,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:50:35,042 INFO L87 Difference]: Start difference. First operand 35956 states and 52212 transitions. Second operand 8 states. [2020-10-15 03:50:35,206 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132