/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.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:54:22,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:54:22,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:54:22,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:54:22,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:54:22,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:54:22,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:54:22,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:54:22,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:54:22,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:54:22,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:54:22,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:54:22,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:54:22,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:54:22,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:54:22,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:54:22,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:54:22,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:54:22,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:54:22,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:54:22,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:54:22,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:54:22,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:54:22,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:54:22,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:54:22,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:54:22,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:54:22,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:54:22,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:54:22,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:54:22,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:54:22,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:54:22,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:54:22,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:54:22,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:54:22,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:54:22,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:54:22,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:54:22,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:54:22,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:54:22,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:54:22,531 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 03:54:22,553 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:54:22,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:54:22,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:54:22,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:54:22,555 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:54:22,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:54:22,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:54:22,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:54:22,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:54:22,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:54:22,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:54:22,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:54:22,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:54:22,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:54:22,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:54:22,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:54:22,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:54:22,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:54:22,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:54:22,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:54:22,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:54:22,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:54:22,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:54:22,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:54:22,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:54:22,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:54:22,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:54:22,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:54:22,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:54:22,560 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 03:54:22,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:54:22,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:54:22,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:54:22,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:54:22,919 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:54:22,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:54:23,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2a88696a/a678a3f4b8c0483495771dab920382b8/FLAGdd109f330 [2020-10-15 03:54:23,539 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:54:23,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:54:23,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2a88696a/a678a3f4b8c0483495771dab920382b8/FLAGdd109f330 [2020-10-15 03:54:23,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2a88696a/a678a3f4b8c0483495771dab920382b8 [2020-10-15 03:54:23,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:54:23,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:54:23,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:54:23,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:54:23,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:54:23,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:54:23" (1/1) ... [2020-10-15 03:54:23,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:23, skipping insertion in model container [2020-10-15 03:54:23,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:54:23" (1/1) ... [2020-10-15 03:54:23,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:54:23,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:54:24,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:54:24,502 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:54:24,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:54:24,619 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:54:24,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:24 WrapperNode [2020-10-15 03:54:24,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:54:24,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:54:24,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:54:24,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:54:24,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:24" (1/1) ... [2020-10-15 03:54:24,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:24" (1/1) ... [2020-10-15 03:54:24,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:24" (1/1) ... [2020-10-15 03:54:24,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:24" (1/1) ... [2020-10-15 03:54:24,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:24" (1/1) ... [2020-10-15 03:54:24,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:24" (1/1) ... [2020-10-15 03:54:24,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:24" (1/1) ... [2020-10-15 03:54:24,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:54:24,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:54:24,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:54:24,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:54:24,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:24" (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 03:54:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:54:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:54:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:54:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:54:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:54:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:54:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:54:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:54:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:54:24,771 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:54:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:54:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:54:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:54:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:54:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:54:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:54:24,773 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:54:24,773 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:54:24,773 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:54:24,773 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:54:24,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:54:24,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:54:24,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:54:25,765 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:54:25,765 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:54:25,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:54:25 BoogieIcfgContainer [2020-10-15 03:54:25,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:54:25,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:54:25,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:54:25,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:54:25,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:54:23" (1/3) ... [2020-10-15 03:54:25,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2095f9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:54:25, skipping insertion in model container [2020-10-15 03:54:25,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:24" (2/3) ... [2020-10-15 03:54:25,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2095f9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:54:25, skipping insertion in model container [2020-10-15 03:54:25,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:54:25" (3/3) ... [2020-10-15 03:54:25,780 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:54:25,790 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:54:25,798 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:54:25,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:54:25,835 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:54:25,835 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:54:25,835 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:54:25,835 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:54:25,836 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:54:25,836 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:54:25,836 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:54:25,836 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:54:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-15 03:54:25,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:54:25,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:25,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:54:25,871 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:25,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:25,876 INFO L82 PathProgramCache]: Analyzing trace with hash 813203295, now seen corresponding path program 1 times [2020-10-15 03:54:25,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:25,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660723261] [2020-10-15 03:54:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:26,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:29,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:29,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:54:29,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:54:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3170 [2020-10-15 03:54:29,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:29,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:29,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:54:29,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:54:29,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 03:54:29,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:54:29,808 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:29,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:29,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:29,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:29,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:29,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:54:29,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:29,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:54:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:54:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:29,864 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 03:54:29,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660723261] [2020-10-15 03:54:29,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:29,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:54:29,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403776765] [2020-10-15 03:54:29,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:54:29,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:29,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:54:29,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:54:29,892 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 8 states. [2020-10-15 03:54:30,212 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:54:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:31,442 INFO L93 Difference]: Finished difference Result 839 states and 1350 transitions. [2020-10-15 03:54:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:54:31,444 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-15 03:54:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:31,465 INFO L225 Difference]: With dead ends: 839 [2020-10-15 03:54:31,465 INFO L226 Difference]: Without dead ends: 717 [2020-10-15 03:54:31,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:54:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-10-15 03:54:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 318. [2020-10-15 03:54:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-15 03:54:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 475 transitions. [2020-10-15 03:54:31,560 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 475 transitions. Word has length 83 [2020-10-15 03:54:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:31,562 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 475 transitions. [2020-10-15 03:54:31,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:54:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 475 transitions. [2020-10-15 03:54:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:54:31,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:31,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:54:31,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:54:31,571 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:31,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:31,571 INFO L82 PathProgramCache]: Analyzing trace with hash -821920278, now seen corresponding path program 1 times [2020-10-15 03:54:31,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:31,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826543310] [2020-10-15 03:54:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:31,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:32,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:32,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:54:32,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:54:32,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-15 03:54:32,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:32,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:32,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:54:32,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:54:32,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:54:32,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:33,128 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:33,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:33,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:54:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:33,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:54:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:54:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:33,192 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 03:54:33,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826543310] [2020-10-15 03:54:33,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:33,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:54:33,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968717273] [2020-10-15 03:54:33,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:54:33,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:33,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:54:33,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:54:33,196 INFO L87 Difference]: Start difference. First operand 318 states and 475 transitions. Second operand 8 states. [2020-10-15 03:54:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:35,305 INFO L93 Difference]: Finished difference Result 1374 states and 2128 transitions. [2020-10-15 03:54:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:54:35,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-15 03:54:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:35,313 INFO L225 Difference]: With dead ends: 1374 [2020-10-15 03:54:35,313 INFO L226 Difference]: Without dead ends: 1136 [2020-10-15 03:54:35,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:54:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2020-10-15 03:54:35,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1128. [2020-10-15 03:54:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-10-15 03:54:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1740 transitions. [2020-10-15 03:54:35,397 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1740 transitions. Word has length 84 [2020-10-15 03:54:35,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:35,398 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 1740 transitions. [2020-10-15 03:54:35,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:54:35,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1740 transitions. [2020-10-15 03:54:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:54:35,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:35,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:54:35,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:54:35,403 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:35,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:35,404 INFO L82 PathProgramCache]: Analyzing trace with hash 356835384, now seen corresponding path program 1 times [2020-10-15 03:54:35,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:35,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79396383] [2020-10-15 03:54:35,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:35,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:36,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:36,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:54:36,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:54:36,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-15 03:54:36,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:36,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:54:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:54:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:54:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:36,309 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:36,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:36,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:36,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:36,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:54:36,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:36,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:54:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:54:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:36,364 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 03:54:36,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79396383] [2020-10-15 03:54:36,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:36,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:54:36,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516169281] [2020-10-15 03:54:36,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:54:36,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:36,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:54:36,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:54:36,367 INFO L87 Difference]: Start difference. First operand 1128 states and 1740 transitions. Second operand 6 states. [2020-10-15 03:54:36,583 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:54:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:37,619 INFO L93 Difference]: Finished difference Result 2981 states and 4651 transitions. [2020-10-15 03:54:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:54:37,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-15 03:54:37,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:37,630 INFO L225 Difference]: With dead ends: 2981 [2020-10-15 03:54:37,630 INFO L226 Difference]: Without dead ends: 1934 [2020-10-15 03:54:37,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:54:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2020-10-15 03:54:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1932. [2020-10-15 03:54:37,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2020-10-15 03:54:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2992 transitions. [2020-10-15 03:54:37,760 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2992 transitions. Word has length 85 [2020-10-15 03:54:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:37,761 INFO L479 AbstractCegarLoop]: Abstraction has 1932 states and 2992 transitions. [2020-10-15 03:54:37,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:54:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2992 transitions. [2020-10-15 03:54:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:54:37,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:37,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:54:37,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:54:37,764 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:37,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:37,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1887979913, now seen corresponding path program 1 times [2020-10-15 03:54:37,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:37,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837510952] [2020-10-15 03:54:37,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:38,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:38,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:38,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:54:38,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:54:38,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-15 03:54:38,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:38,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:38,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:54:38,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:54:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:54:38,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:54:38,660 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:38,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:38,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:38,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:38,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:54:38,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:38,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:54:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:54:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:38,729 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 03:54:38,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837510952] [2020-10-15 03:54:38,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:38,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:54:38,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956020438] [2020-10-15 03:54:38,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:54:38,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:38,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:54:38,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:54:38,733 INFO L87 Difference]: Start difference. First operand 1932 states and 2992 transitions. Second operand 6 states. [2020-10-15 03:54:38,972 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:54:40,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:40,276 INFO L93 Difference]: Finished difference Result 5257 states and 8200 transitions. [2020-10-15 03:54:40,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:54:40,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-15 03:54:40,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:40,293 INFO L225 Difference]: With dead ends: 5257 [2020-10-15 03:54:40,293 INFO L226 Difference]: Without dead ends: 3436 [2020-10-15 03:54:40,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:54:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2020-10-15 03:54:40,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3434. [2020-10-15 03:54:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3434 states. [2020-10-15 03:54:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 5317 transitions. [2020-10-15 03:54:40,537 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 5317 transitions. Word has length 85 [2020-10-15 03:54:40,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:40,538 INFO L479 AbstractCegarLoop]: Abstraction has 3434 states and 5317 transitions. [2020-10-15 03:54:40,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:54:40,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 5317 transitions. [2020-10-15 03:54:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:54:40,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:40,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:54:40,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:54:40,542 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:40,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:40,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1868628262, now seen corresponding path program 1 times [2020-10-15 03:54:40,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:40,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022181588] [2020-10-15 03:54:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:40,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:41,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:41,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:54:41,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:54:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-15 03:54:41,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:41,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:54:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:54:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:54:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:41,456 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:41,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:41,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:41,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:41,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:54:41,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:41,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:54:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:54:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:41,509 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 03:54:41,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022181588] [2020-10-15 03:54:41,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:41,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:54:41,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886727224] [2020-10-15 03:54:41,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:54:41,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:41,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:54:41,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:54:41,511 INFO L87 Difference]: Start difference. First operand 3434 states and 5317 transitions. Second operand 6 states. [2020-10-15 03:54:41,694 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:54:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:43,051 INFO L93 Difference]: Finished difference Result 9673 states and 15066 transitions. [2020-10-15 03:54:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:54:43,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-15 03:54:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:43,081 INFO L225 Difference]: With dead ends: 9673 [2020-10-15 03:54:43,081 INFO L226 Difference]: Without dead ends: 6384 [2020-10-15 03:54:43,087 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 03:54:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2020-10-15 03:54:43,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 6382. [2020-10-15 03:54:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6382 states. [2020-10-15 03:54:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 9884 transitions. [2020-10-15 03:54:43,553 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 9884 transitions. Word has length 85 [2020-10-15 03:54:43,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:43,555 INFO L479 AbstractCegarLoop]: Abstraction has 6382 states and 9884 transitions. [2020-10-15 03:54:43,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:54:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 9884 transitions. [2020-10-15 03:54:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:54:43,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:43,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:54:43,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:54:43,561 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:43,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:43,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1875182311, now seen corresponding path program 1 times [2020-10-15 03:54:43,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:43,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422233207] [2020-10-15 03:54:43,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:43,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:44,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:44,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:54:44,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:54:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-15 03:54:44,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:44,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:54:44,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:54:44,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:54:44,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:54:44,237 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:44,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:44,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:44,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:44,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:54:44,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:44,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:54:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:54:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:44,303 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 03:54:44,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422233207] [2020-10-15 03:54:44,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:44,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:54:44,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286309997] [2020-10-15 03:54:44,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:54:44,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:44,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:54:44,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:54:44,308 INFO L87 Difference]: Start difference. First operand 6382 states and 9884 transitions. Second operand 6 states. [2020-10-15 03:54:44,565 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:54:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:46,187 INFO L93 Difference]: Finished difference Result 18704 states and 28986 transitions. [2020-10-15 03:54:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:54:46,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-15 03:54:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:46,248 INFO L225 Difference]: With dead ends: 18704 [2020-10-15 03:54:46,248 INFO L226 Difference]: Without dead ends: 12380 [2020-10-15 03:54:46,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:54:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12380 states. [2020-10-15 03:54:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12380 to 12378. [2020-10-15 03:54:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12378 states. [2020-10-15 03:54:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12378 states to 12378 states and 19037 transitions. [2020-10-15 03:54:47,135 INFO L78 Accepts]: Start accepts. Automaton has 12378 states and 19037 transitions. Word has length 85 [2020-10-15 03:54:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:47,135 INFO L479 AbstractCegarLoop]: Abstraction has 12378 states and 19037 transitions. [2020-10-15 03:54:47,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:54:47,136 INFO L276 IsEmpty]: Start isEmpty. Operand 12378 states and 19037 transitions. [2020-10-15 03:54:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:54:47,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:47,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:54:47,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:54:47,142 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:47,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1997503320, now seen corresponding path program 1 times [2020-10-15 03:54:47,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:47,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333386120] [2020-10-15 03:54:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:47,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:47,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:54:47,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:54:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-15 03:54:47,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:47,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:54:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:54:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:54:47,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:48,044 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:48,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:48,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:48,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:48,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:48,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:54:48,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:48,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:54:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:48,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:54:48,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:54:48,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333386120] [2020-10-15 03:54:48,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:48,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:54:48,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448759787] [2020-10-15 03:54:48,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:54:48,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:48,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:54:48,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:54:48,107 INFO L87 Difference]: Start difference. First operand 12378 states and 19037 transitions. Second operand 6 states. [2020-10-15 03:54:48,285 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:54:50,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:50,473 INFO L93 Difference]: Finished difference Result 36593 states and 56296 transitions. [2020-10-15 03:54:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:54:50,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:54:50,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:50,539 INFO L225 Difference]: With dead ends: 36593 [2020-10-15 03:54:50,540 INFO L226 Difference]: Without dead ends: 24282 [2020-10-15 03:54:50,564 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 03:54:50,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24282 states. [2020-10-15 03:54:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24282 to 24280. [2020-10-15 03:54:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24280 states. [2020-10-15 03:54:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24280 states to 24280 states and 37172 transitions. [2020-10-15 03:54:52,495 INFO L78 Accepts]: Start accepts. Automaton has 24280 states and 37172 transitions. Word has length 86 [2020-10-15 03:54:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:52,495 INFO L479 AbstractCegarLoop]: Abstraction has 24280 states and 37172 transitions. [2020-10-15 03:54:52,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:54:52,495 INFO L276 IsEmpty]: Start isEmpty. Operand 24280 states and 37172 transitions. [2020-10-15 03:54:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:54:52,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:52,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:54:52,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:54:52,505 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:52,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1201074475, now seen corresponding path program 1 times [2020-10-15 03:54:52,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:52,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071997177] [2020-10-15 03:54:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:52,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:52,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:53,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:54,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:54:54,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:54:54,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-10-15 03:54:54,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:54,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:54:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:54:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:54:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:54:54,353 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:54,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:54,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:54,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:54,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:54:54,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:54,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:54:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:54:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 119 [2020-10-15 03:54:54,514 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 03:54:54,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071997177] [2020-10-15 03:54:54,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:54,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:54:54,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909161296] [2020-10-15 03:54:54,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:54:54,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:54,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:54:54,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:54:54,518 INFO L87 Difference]: Start difference. First operand 24280 states and 37172 transitions. Second operand 9 states. [2020-10-15 03:54:54,795 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:55:04,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:04,231 INFO L93 Difference]: Finished difference Result 132976 states and 203230 transitions. [2020-10-15 03:55:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:55:04,232 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-15 03:55:04,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:04,541 INFO L225 Difference]: With dead ends: 132976 [2020-10-15 03:55:04,542 INFO L226 Difference]: Without dead ends: 118049 [2020-10-15 03:55:04,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:55:04,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118049 states. [2020-10-15 03:55:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118049 to 24594. [2020-10-15 03:55:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24594 states. [2020-10-15 03:55:06,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24594 states to 24594 states and 37596 transitions. [2020-10-15 03:55:06,852 INFO L78 Accepts]: Start accepts. Automaton has 24594 states and 37596 transitions. Word has length 86 [2020-10-15 03:55:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:06,853 INFO L479 AbstractCegarLoop]: Abstraction has 24594 states and 37596 transitions. [2020-10-15 03:55:06,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:55:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 24594 states and 37596 transitions. [2020-10-15 03:55:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:55:06,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:06,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:55:06,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:55:06,863 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:06,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:06,864 INFO L82 PathProgramCache]: Analyzing trace with hash 248940149, now seen corresponding path program 1 times [2020-10-15 03:55:06,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:06,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233701280] [2020-10-15 03:55:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:08,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:08,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:55:08,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:55:08,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-15 03:55:08,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:08,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:08,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:55:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:55:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:55:08,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:08,611 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:55:08,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:08,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:08,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:08,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:55:08,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:08,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:08,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:08,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:08,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:08,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:08,664 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 03:55:08,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233701280] [2020-10-15 03:55:08,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:08,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:55:08,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004395311] [2020-10-15 03:55:08,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:55:08,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:08,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:55:08,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:55:08,667 INFO L87 Difference]: Start difference. First operand 24594 states and 37596 transitions. Second operand 9 states. [2020-10-15 03:55:08,878 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:55:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:20,917 INFO L93 Difference]: Finished difference Result 111015 states and 169027 transitions. [2020-10-15 03:55:20,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 03:55:20,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-15 03:55:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:21,144 INFO L225 Difference]: With dead ends: 111015 [2020-10-15 03:55:21,144 INFO L226 Difference]: Without dead ends: 100741 [2020-10-15 03:55:21,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:55:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100741 states. [2020-10-15 03:55:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100741 to 25190. [2020-10-15 03:55:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25190 states. [2020-10-15 03:55:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25190 states to 25190 states and 38442 transitions. [2020-10-15 03:55:23,662 INFO L78 Accepts]: Start accepts. Automaton has 25190 states and 38442 transitions. Word has length 86 [2020-10-15 03:55:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:23,662 INFO L479 AbstractCegarLoop]: Abstraction has 25190 states and 38442 transitions. [2020-10-15 03:55:23,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:55:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 25190 states and 38442 transitions. [2020-10-15 03:55:23,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:55:23,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:23,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:55:23,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:55:23,674 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:23,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:23,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1695531499, now seen corresponding path program 1 times [2020-10-15 03:55:23,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:23,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241892973] [2020-10-15 03:55:23,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:23,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:23,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:26,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:26,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:55:26,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:55:26,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2609 [2020-10-15 03:55:26,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:26,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:55:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:55:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:55:26,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:26,610 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:55:26,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:26,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:26,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:26,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:26,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:26,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:55:26,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:26,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:26,650 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 03:55:26,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241892973] [2020-10-15 03:55:26,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:26,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:55:26,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12985209] [2020-10-15 03:55:26,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:55:26,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:26,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:55:26,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:55:26,652 INFO L87 Difference]: Start difference. First operand 25190 states and 38442 transitions. Second operand 9 states. [2020-10-15 03:55:26,887 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:55:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:38,670 INFO L93 Difference]: Finished difference Result 110769 states and 168943 transitions. [2020-10-15 03:55:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 03:55:38,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-15 03:55:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:38,810 INFO L225 Difference]: With dead ends: 110769 [2020-10-15 03:55:38,810 INFO L226 Difference]: Without dead ends: 105158 [2020-10-15 03:55:38,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-15 03:55:38,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105158 states. [2020-10-15 03:55:42,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105158 to 25190. [2020-10-15 03:55:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25190 states. [2020-10-15 03:55:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25190 states to 25190 states and 38438 transitions. [2020-10-15 03:55:42,795 INFO L78 Accepts]: Start accepts. Automaton has 25190 states and 38438 transitions. Word has length 86 [2020-10-15 03:55:42,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:42,795 INFO L479 AbstractCegarLoop]: Abstraction has 25190 states and 38438 transitions. [2020-10-15 03:55:42,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:55:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 25190 states and 38438 transitions. [2020-10-15 03:55:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:55:42,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:42,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:55:42,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:55:42,806 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:42,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:42,808 INFO L82 PathProgramCache]: Analyzing trace with hash -699410635, now seen corresponding path program 1 times [2020-10-15 03:55:42,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:42,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903044769] [2020-10-15 03:55:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:42,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:42,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:44,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:44,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:55:44,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:55:44,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-10-15 03:55:44,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:44,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:44,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:55:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:55:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 03:55:44,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:44,852 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:55:44,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:44,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:44,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:44,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:44,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:44,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:55:44,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:44,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:44,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:44,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:44,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:44,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:44,895 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 03:55:44,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903044769] [2020-10-15 03:55:44,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:44,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:55:44,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716031538] [2020-10-15 03:55:44,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:55:44,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:44,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:55:44,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:55:44,898 INFO L87 Difference]: Start difference. First operand 25190 states and 38438 transitions. Second operand 9 states. [2020-10-15 03:55:45,118 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:56:01,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:01,605 INFO L93 Difference]: Finished difference Result 147207 states and 224483 transitions. [2020-10-15 03:56:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:56:01,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-15 03:56:01,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:01,788 INFO L225 Difference]: With dead ends: 147207 [2020-10-15 03:56:01,788 INFO L226 Difference]: Without dead ends: 127627 [2020-10-15 03:56:01,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:56:01,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127627 states. [2020-10-15 03:56:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127627 to 25616. [2020-10-15 03:56:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25616 states. [2020-10-15 03:56:05,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25616 states to 25616 states and 38986 transitions. [2020-10-15 03:56:05,522 INFO L78 Accepts]: Start accepts. Automaton has 25616 states and 38986 transitions. Word has length 86 [2020-10-15 03:56:05,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:05,523 INFO L479 AbstractCegarLoop]: Abstraction has 25616 states and 38986 transitions. [2020-10-15 03:56:05,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:56:05,523 INFO L276 IsEmpty]: Start isEmpty. Operand 25616 states and 38986 transitions. [2020-10-15 03:56:05,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:56:05,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:05,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:05,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:56:05,533 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:05,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:05,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1494372669, now seen corresponding path program 1 times [2020-10-15 03:56:05,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:05,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065581041] [2020-10-15 03:56:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:05,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:07,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:07,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:56:07,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:56:07,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-10-15 03:56:07,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:07,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:56:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:56:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:56:07,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:07,448 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 24 [2020-10-15 03:56:07,704 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:07,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:07,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:07,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:07,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:56:07,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:07,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:07,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:07,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:07,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:07,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:07,759 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 03:56:07,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065581041] [2020-10-15 03:56:07,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:07,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:56:07,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114603598] [2020-10-15 03:56:07,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:56:07,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:07,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:56:07,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:56:07,771 INFO L87 Difference]: Start difference. First operand 25616 states and 38986 transitions. Second operand 9 states. [2020-10-15 03:56:08,070 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:56:27,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:27,300 INFO L93 Difference]: Finished difference Result 140879 states and 214956 transitions. [2020-10-15 03:56:27,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:56:27,300 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:56:27,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:27,468 INFO L225 Difference]: With dead ends: 140879 [2020-10-15 03:56:27,469 INFO L226 Difference]: Without dead ends: 116839 [2020-10-15 03:56:27,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:56:27,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116839 states. [2020-10-15 03:56:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116839 to 25975. [2020-10-15 03:56:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25975 states. [2020-10-15 03:56:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25975 states to 25975 states and 39397 transitions. [2020-10-15 03:56:31,935 INFO L78 Accepts]: Start accepts. Automaton has 25975 states and 39397 transitions. Word has length 87 [2020-10-15 03:56:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:31,935 INFO L479 AbstractCegarLoop]: Abstraction has 25975 states and 39397 transitions. [2020-10-15 03:56:31,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:56:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 25975 states and 39397 transitions. [2020-10-15 03:56:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:56:31,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:31,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:31,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:56:31,944 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:31,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1470543527, now seen corresponding path program 1 times [2020-10-15 03:56:31,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:31,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134227511] [2020-10-15 03:56:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:31,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:32,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:56:32,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-15 03:56:32,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:32,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:56:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-15 03:56:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:56:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:32,304 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:32,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:32,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:32,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:32,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:32,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:56:32,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:32,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:32,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:32,331 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 03:56:32,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134227511] [2020-10-15 03:56:32,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:32,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:56:32,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186233959] [2020-10-15 03:56:32,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:56:32,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:32,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:56:32,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:56:32,334 INFO L87 Difference]: Start difference. First operand 25975 states and 39397 transitions. Second operand 5 states. [2020-10-15 03:56:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:41,008 INFO L93 Difference]: Finished difference Result 49945 states and 75846 transitions. [2020-10-15 03:56:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:56:41,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-15 03:56:41,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:41,072 INFO L225 Difference]: With dead ends: 49945 [2020-10-15 03:56:41,073 INFO L226 Difference]: Without dead ends: 49943 [2020-10-15 03:56:41,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:56:41,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49943 states. [2020-10-15 03:56:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49943 to 26615. [2020-10-15 03:56:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26615 states. [2020-10-15 03:56:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26615 states to 26615 states and 40037 transitions. [2020-10-15 03:56:45,163 INFO L78 Accepts]: Start accepts. Automaton has 26615 states and 40037 transitions. Word has length 87 [2020-10-15 03:56:45,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:45,163 INFO L479 AbstractCegarLoop]: Abstraction has 26615 states and 40037 transitions. [2020-10-15 03:56:45,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:56:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 26615 states and 40037 transitions. [2020-10-15 03:56:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:56:45,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:45,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:45,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:56:45,173 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:45,174 INFO L82 PathProgramCache]: Analyzing trace with hash -201561934, now seen corresponding path program 1 times [2020-10-15 03:56:45,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:45,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311818853] [2020-10-15 03:56:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:45,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:46,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:46,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:56:46,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:56:46,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1386 [2020-10-15 03:56:46,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:46,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:56:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:56:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-15 03:56:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:46,791 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:46,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:46,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:46,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:46,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:46,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:56:46,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:46,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:46,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:46,817 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 03:56:46,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311818853] [2020-10-15 03:56:46,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:46,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:56:46,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560229123] [2020-10-15 03:56:46,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:56:46,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:46,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:56:46,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:46,819 INFO L87 Difference]: Start difference. First operand 26615 states and 40037 transitions. Second operand 8 states. [2020-10-15 03:56:47,043 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:57:01,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:01,668 INFO L93 Difference]: Finished difference Result 95001 states and 144757 transitions. [2020-10-15 03:57:01,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:57:01,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-15 03:57:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:01,753 INFO L225 Difference]: With dead ends: 95001 [2020-10-15 03:57:01,754 INFO L226 Difference]: Without dead ends: 83015 [2020-10-15 03:57:01,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:57:01,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83015 states. [2020-10-15 03:57:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83015 to 43293. [2020-10-15 03:57:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43293 states. [2020-10-15 03:57:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43293 states to 43293 states and 65369 transitions. [2020-10-15 03:57:10,248 INFO L78 Accepts]: Start accepts. Automaton has 43293 states and 65369 transitions. Word has length 88 [2020-10-15 03:57:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:10,248 INFO L479 AbstractCegarLoop]: Abstraction has 43293 states and 65369 transitions. [2020-10-15 03:57:10,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:57:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 43293 states and 65369 transitions. [2020-10-15 03:57:10,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:57:10,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:10,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:10,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:57:10,259 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1397449992, now seen corresponding path program 1 times [2020-10-15 03:57:10,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:10,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627182730] [2020-10-15 03:57:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:10,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:10,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:57:10,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-15 03:57:10,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:10,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:57:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:57:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 03:57:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:10,601 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:10,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:10,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:10,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:10,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:57:10,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:10,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:57:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:57:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:10,636 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 03:57:10,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627182730] [2020-10-15 03:57:10,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:10,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:57:10,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374432562] [2020-10-15 03:57:10,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:57:10,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:10,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:57:10,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:57:10,638 INFO L87 Difference]: Start difference. First operand 43293 states and 65369 transitions. Second operand 5 states. [2020-10-15 03:57:10,908 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:57:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:24,810 INFO L93 Difference]: Finished difference Result 118705 states and 179291 transitions. [2020-10-15 03:57:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:57:24,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-15 03:57:24,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:24,906 INFO L225 Difference]: With dead ends: 118705 [2020-10-15 03:57:24,906 INFO L226 Difference]: Without dead ends: 78127 [2020-10-15 03:57:24,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:57:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78127 states. [2020-10-15 03:57:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78127 to 77613. [2020-10-15 03:57:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77613 states. [2020-10-15 03:57:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77613 states to 77613 states and 116201 transitions. [2020-10-15 03:57:39,793 INFO L78 Accepts]: Start accepts. Automaton has 77613 states and 116201 transitions. Word has length 88 [2020-10-15 03:57:39,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:39,793 INFO L479 AbstractCegarLoop]: Abstraction has 77613 states and 116201 transitions. [2020-10-15 03:57:39,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:57:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 77613 states and 116201 transitions. [2020-10-15 03:57:39,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:57:39,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:39,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:39,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:57:39,803 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:39,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:39,803 INFO L82 PathProgramCache]: Analyzing trace with hash 748725357, now seen corresponding path program 1 times [2020-10-15 03:57:39,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:39,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595089489] [2020-10-15 03:57:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:39,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:41,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:41,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:57:41,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:57:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-15 03:57:41,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:41,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:57:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:57:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-15 03:57:41,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:41,338 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:41,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:41,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:41,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:41,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:57:41,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:41,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:57:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:57:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:41,362 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 03:57:41,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595089489] [2020-10-15 03:57:41,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:41,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:57:41,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011096067] [2020-10-15 03:57:41,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:57:41,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:41,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:57:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:57:41,364 INFO L87 Difference]: Start difference. First operand 77613 states and 116201 transitions. Second operand 8 states. [2020-10-15 03:57:41,584 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:58:09,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:09,537 INFO L93 Difference]: Finished difference Result 161689 states and 242485 transitions. [2020-10-15 03:58:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:58:09,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-15 03:58:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:09,725 INFO L225 Difference]: With dead ends: 161689 [2020-10-15 03:58:09,725 INFO L226 Difference]: Without dead ends: 151543 [2020-10-15 03:58:09,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:58:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151543 states.