/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.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:14:20,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:14:20,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:14:20,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:14:20,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:14:20,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:14:20,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:14:20,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:14:20,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:14:20,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:14:20,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:14:20,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:14:20,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:14:20,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:14:20,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:14:20,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:14:20,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:14:20,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:14:20,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:14:20,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:14:20,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:14:20,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:14:20,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:14:20,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:14:20,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:14:20,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:14:20,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:14:20,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:14:20,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:14:20,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:14:20,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:14:20,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:14:20,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:14:20,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:14:20,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:14:20,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:14:20,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:14:20,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:14:20,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:14:20,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:14:20,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:14:20,813 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 03:14:20,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:14:20,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:14:20,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:14:20,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:14:20,859 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:14:20,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:14:20,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:14:20,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:14:20,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:14:20,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:14:20,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:14:20,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:14:20,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:14:20,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:14:20,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:14:20,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:14:20,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:14:20,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:14:20,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:14:20,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:14:20,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:14:20,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:14:20,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:14:20,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:14:20,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:14:20,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:14:20,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:14:20,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:14:20,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:14:20,865 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 03:14:21,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:14:21,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:14:21,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:14:21,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:14:21,214 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:14:21,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:14:21,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7e86601/47ac66487c3e46eca9dea6f4733239d8/FLAG29f1fc0f9 [2020-10-15 03:14:21,860 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:14:21,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:14:21,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7e86601/47ac66487c3e46eca9dea6f4733239d8/FLAG29f1fc0f9 [2020-10-15 03:14:22,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7e86601/47ac66487c3e46eca9dea6f4733239d8 [2020-10-15 03:14:22,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:14:22,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:14:22,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:14:22,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:14:22,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:14:22,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:14:22" (1/1) ... [2020-10-15 03:14:22,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e9cd22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22, skipping insertion in model container [2020-10-15 03:14:22,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:14:22" (1/1) ... [2020-10-15 03:14:22,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:14:22,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:14:22,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:14:22,535 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:14:22,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:14:22,770 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:14:22,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22 WrapperNode [2020-10-15 03:14:22,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:14:22,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:14:22,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:14:22,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:14:22,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22" (1/1) ... [2020-10-15 03:14:22,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22" (1/1) ... [2020-10-15 03:14:22,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22" (1/1) ... [2020-10-15 03:14:22,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22" (1/1) ... [2020-10-15 03:14:22,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22" (1/1) ... [2020-10-15 03:14:22,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22" (1/1) ... [2020-10-15 03:14:22,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22" (1/1) ... [2020-10-15 03:14:22,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:14:22,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:14:22,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:14:22,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:14:22,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22" (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 03:14:22,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:14:22,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:14:22,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:14:22,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:14:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:14:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:14:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:14:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:14:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:14:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:14:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:14:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:14:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:14:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:14:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:14:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:14:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:14:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:14:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:14:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:14:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:14:23,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:14:23,569 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:14:23,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:14:23 BoogieIcfgContainer [2020-10-15 03:14:23,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:14:23,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:14:23,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:14:23,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:14:23,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:14:22" (1/3) ... [2020-10-15 03:14:23,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c45d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:14:23, skipping insertion in model container [2020-10-15 03:14:23,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:14:22" (2/3) ... [2020-10-15 03:14:23,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c45d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:14:23, skipping insertion in model container [2020-10-15 03:14:23,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:14:23" (3/3) ... [2020-10-15 03:14:23,585 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:14:23,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:14:23,606 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 03:14:23,623 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 03:14:23,651 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:14:23,652 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:14:23,652 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:14:23,652 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:14:23,653 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:14:23,653 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:14:23,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:14:23,655 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:14:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2020-10-15 03:14:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 03:14:23,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:23,691 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] [2020-10-15 03:14:23,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:23,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:23,699 INFO L82 PathProgramCache]: Analyzing trace with hash -209225606, now seen corresponding path program 1 times [2020-10-15 03:14:23,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:23,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80020391] [2020-10-15 03:14:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:24,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:24,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:25,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:25,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:28,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:28,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:28,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:28,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 03:14:28,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:14:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:14:28,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:28,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:14:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:14:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 03:14:29,235 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-15 03:14:29,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:29,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:29,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:29,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:29,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:29,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:14:29,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:29,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:29,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:29,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:29,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:29,288 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 03:14:29,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80020391] [2020-10-15 03:14:29,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:29,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:14:29,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814117095] [2020-10-15 03:14:29,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:29,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:29,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:29,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:29,318 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 6 states. [2020-10-15 03:14:29,551 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:14:30,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:30,810 INFO L93 Difference]: Finished difference Result 433 states and 679 transitions. [2020-10-15 03:14:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:14:30,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-15 03:14:30,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:30,832 INFO L225 Difference]: With dead ends: 433 [2020-10-15 03:14:30,832 INFO L226 Difference]: Without dead ends: 362 [2020-10-15 03:14:30,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:14:30,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-15 03:14:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 160. [2020-10-15 03:14:30,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-15 03:14:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 226 transitions. [2020-10-15 03:14:30,924 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 226 transitions. Word has length 51 [2020-10-15 03:14:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:30,925 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 226 transitions. [2020-10-15 03:14:30,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:30,926 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 226 transitions. [2020-10-15 03:14:30,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:14:30,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:30,930 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] [2020-10-15 03:14:30,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:14:30,930 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:30,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:30,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1932949695, now seen corresponding path program 1 times [2020-10-15 03:14:30,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:30,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832380665] [2020-10-15 03:14:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:31,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:33,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:35,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:35,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:14:35,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:14:35,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:14:35,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:35,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:14:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:14:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 03:14:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:36,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:36,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:36,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:36,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:36,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:14:36,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:36,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:36,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:36,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:36,215 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 03:14:36,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832380665] [2020-10-15 03:14:36,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:36,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:14:36,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526919085] [2020-10-15 03:14:36,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:36,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:36,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:36,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:36,219 INFO L87 Difference]: Start difference. First operand 160 states and 226 transitions. Second operand 6 states. [2020-10-15 03:14:36,392 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-15 03:14:37,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:37,239 INFO L93 Difference]: Finished difference Result 446 states and 655 transitions. [2020-10-15 03:14:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:14:37,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-15 03:14:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:37,244 INFO L225 Difference]: With dead ends: 446 [2020-10-15 03:14:37,244 INFO L226 Difference]: Without dead ends: 359 [2020-10-15 03:14:37,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:14:37,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-15 03:14:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 162. [2020-10-15 03:14:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-15 03:14:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 227 transitions. [2020-10-15 03:14:37,265 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 227 transitions. Word has length 52 [2020-10-15 03:14:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:37,266 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 227 transitions. [2020-10-15 03:14:37,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 227 transitions. [2020-10-15 03:14:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:14:37,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:37,268 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] [2020-10-15 03:14:37,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:14:37,269 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:37,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1610234345, now seen corresponding path program 1 times [2020-10-15 03:14:37,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:37,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100388057] [2020-10-15 03:14:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:37,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:37,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:38,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:40,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:40,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:41,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:42,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:42,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:42,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:14:42,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:14:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:14:42,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:42,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:14:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:14:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 03:14:42,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:42,646 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 28 [2020-10-15 03:14:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:42,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:42,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:42,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:42,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:14:42,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:42,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:42,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:42,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:42,784 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 03:14:42,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100388057] [2020-10-15 03:14:42,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:42,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:14:42,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655333596] [2020-10-15 03:14:42,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:14:42,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:42,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:14:42,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:14:42,790 INFO L87 Difference]: Start difference. First operand 162 states and 227 transitions. Second operand 8 states. [2020-10-15 03:14:44,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:44,435 INFO L93 Difference]: Finished difference Result 1179 states and 1751 transitions. [2020-10-15 03:14:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 03:14:44,439 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-15 03:14:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:44,446 INFO L225 Difference]: With dead ends: 1179 [2020-10-15 03:14:44,446 INFO L226 Difference]: Without dead ends: 1060 [2020-10-15 03:14:44,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-15 03:14:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2020-10-15 03:14:44,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 462. [2020-10-15 03:14:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-15 03:14:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 679 transitions. [2020-10-15 03:14:44,548 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 679 transitions. Word has length 53 [2020-10-15 03:14:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:44,551 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 679 transitions. [2020-10-15 03:14:44,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:14:44,552 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 679 transitions. [2020-10-15 03:14:44,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:14:44,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:44,561 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] [2020-10-15 03:14:44,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:14:44,561 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:44,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:44,566 INFO L82 PathProgramCache]: Analyzing trace with hash -449897025, now seen corresponding path program 1 times [2020-10-15 03:14:44,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:44,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101088994] [2020-10-15 03:14:44,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:46,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:46,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:46,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:46,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:46,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:49,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:49,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:14:49,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:14:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:14:49,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:49,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:14:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:14:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:14:49,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:49,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:49,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:49,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:49,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:49,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:14:49,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:49,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:49,902 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 03:14:49,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101088994] [2020-10-15 03:14:49,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:49,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:14:49,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093887991] [2020-10-15 03:14:49,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:14:49,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:49,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:14:49,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:14:49,905 INFO L87 Difference]: Start difference. First operand 462 states and 679 transitions. Second operand 9 states. [2020-10-15 03:14:50,076 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:14:52,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:52,273 INFO L93 Difference]: Finished difference Result 5327 states and 8037 transitions. [2020-10-15 03:14:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 03:14:52,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-15 03:14:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:52,307 INFO L225 Difference]: With dead ends: 5327 [2020-10-15 03:14:52,307 INFO L226 Difference]: Without dead ends: 4946 [2020-10-15 03:14:52,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-10-15 03:14:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2020-10-15 03:14:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 513. [2020-10-15 03:14:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-15 03:14:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 735 transitions. [2020-10-15 03:14:52,533 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 735 transitions. Word has length 53 [2020-10-15 03:14:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:52,534 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 735 transitions. [2020-10-15 03:14:52,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:14:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 735 transitions. [2020-10-15 03:14:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:14:52,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:52,538 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] [2020-10-15 03:14:52,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:14:52,538 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:52,539 INFO L82 PathProgramCache]: Analyzing trace with hash -287588672, now seen corresponding path program 1 times [2020-10-15 03:14:52,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:52,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974039687] [2020-10-15 03:14:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:52,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:53,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:55,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:56,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:57,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:14:57,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:14:57,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:14:57,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:57,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:14:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:14:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:14:57,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:57,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:57,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:57,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:14:57,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:57,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:57,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:57,948 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 03:14:57,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974039687] [2020-10-15 03:14:57,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:57,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:14:57,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130532798] [2020-10-15 03:14:57,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:14:57,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:57,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:14:57,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:14:57,951 INFO L87 Difference]: Start difference. First operand 513 states and 735 transitions. Second operand 9 states. [2020-10-15 03:15:00,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:00,541 INFO L93 Difference]: Finished difference Result 6481 states and 9622 transitions. [2020-10-15 03:15:00,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 03:15:00,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-15 03:15:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:00,573 INFO L225 Difference]: With dead ends: 6481 [2020-10-15 03:15:00,574 INFO L226 Difference]: Without dead ends: 6064 [2020-10-15 03:15:00,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-10-15 03:15:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2020-10-15 03:15:00,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 583. [2020-10-15 03:15:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-10-15 03:15:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 806 transitions. [2020-10-15 03:15:00,739 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 806 transitions. Word has length 53 [2020-10-15 03:15:00,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:00,739 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 806 transitions. [2020-10-15 03:15:00,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:15:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 806 transitions. [2020-10-15 03:15:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:15:00,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:00,741 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] [2020-10-15 03:15:00,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:15:00,741 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:00,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:00,742 INFO L82 PathProgramCache]: Analyzing trace with hash -574494068, now seen corresponding path program 1 times [2020-10-15 03:15:00,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:00,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875522652] [2020-10-15 03:15:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:00,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:01,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:01,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:01,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:05,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:05,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:15:05,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:15:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:15:05,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:05,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:15:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:15:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:15:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:05,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:05,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:05,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:05,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:05,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:05,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:15:05,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:05,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:05,933 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 03:15:05,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875522652] [2020-10-15 03:15:05,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:05,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:15:05,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909965399] [2020-10-15 03:15:05,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:15:05,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:05,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:15:05,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:15:05,935 INFO L87 Difference]: Start difference. First operand 583 states and 806 transitions. Second operand 6 states. [2020-10-15 03:15:06,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:06,693 INFO L93 Difference]: Finished difference Result 1911 states and 2790 transitions. [2020-10-15 03:15:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:15:06,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-15 03:15:06,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:06,701 INFO L225 Difference]: With dead ends: 1911 [2020-10-15 03:15:06,702 INFO L226 Difference]: Without dead ends: 1581 [2020-10-15 03:15:06,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:15:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-10-15 03:15:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1085. [2020-10-15 03:15:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-10-15 03:15:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1547 transitions. [2020-10-15 03:15:06,911 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1547 transitions. Word has length 54 [2020-10-15 03:15:06,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:06,912 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1547 transitions. [2020-10-15 03:15:06,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:15:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1547 transitions. [2020-10-15 03:15:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:15:06,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:06,914 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] [2020-10-15 03:15:06,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:15:06,914 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:06,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2129177707, now seen corresponding path program 1 times [2020-10-15 03:15:06,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:06,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634476208] [2020-10-15 03:15:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:06,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:06,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:07,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:09,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:11,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:11,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:15:11,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:15:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:15:11,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:11,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:15:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:15:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:15:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:12,101 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-15 03:15:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:12,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:12,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:12,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:15:12,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:12,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:12,136 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 03:15:12,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634476208] [2020-10-15 03:15:12,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:12,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:15:12,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898125580] [2020-10-15 03:15:12,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:15:12,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:12,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:15:12,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:15:12,143 INFO L87 Difference]: Start difference. First operand 1085 states and 1547 transitions. Second operand 6 states. [2020-10-15 03:15:12,411 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-15 03:15:13,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:13,342 INFO L93 Difference]: Finished difference Result 2729 states and 3981 transitions. [2020-10-15 03:15:13,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:15:13,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-15 03:15:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:13,354 INFO L225 Difference]: With dead ends: 2729 [2020-10-15 03:15:13,354 INFO L226 Difference]: Without dead ends: 2251 [2020-10-15 03:15:13,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:15:13,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2020-10-15 03:15:13,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 1605. [2020-10-15 03:15:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-15 03:15:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2314 transitions. [2020-10-15 03:15:13,692 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2314 transitions. Word has length 54 [2020-10-15 03:15:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:13,692 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2314 transitions. [2020-10-15 03:15:13,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:15:13,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2314 transitions. [2020-10-15 03:15:13,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:15:13,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:13,695 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] [2020-10-15 03:15:13,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:15:13,695 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:13,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1240776186, now seen corresponding path program 1 times [2020-10-15 03:15:13,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:13,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095941744] [2020-10-15 03:15:13,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:13,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:14,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:18,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:18,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:15:18,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:15:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:15:18,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:18,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:15:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:15:18,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:15:18,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:15:18,878 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-15 03:15:18,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:18,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:18,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:18,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:18,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:15:18,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:18,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:18,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:18,902 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 03:15:18,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095941744] [2020-10-15 03:15:18,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:18,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:15:18,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089101700] [2020-10-15 03:15:18,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:15:18,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:18,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:15:18,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:15:18,917 INFO L87 Difference]: Start difference. First operand 1605 states and 2314 transitions. Second operand 6 states. [2020-10-15 03:15:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:20,000 INFO L93 Difference]: Finished difference Result 3075 states and 4491 transitions. [2020-10-15 03:15:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:15:20,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-15 03:15:20,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:20,011 INFO L225 Difference]: With dead ends: 3075 [2020-10-15 03:15:20,011 INFO L226 Difference]: Without dead ends: 2597 [2020-10-15 03:15:20,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:15:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2020-10-15 03:15:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 1945. [2020-10-15 03:15:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2020-10-15 03:15:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2820 transitions. [2020-10-15 03:15:20,361 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2820 transitions. Word has length 54 [2020-10-15 03:15:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:20,361 INFO L479 AbstractCegarLoop]: Abstraction has 1945 states and 2820 transitions. [2020-10-15 03:15:20,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:15:20,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2820 transitions. [2020-10-15 03:15:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:15:20,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:20,363 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] [2020-10-15 03:15:20,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:15:20,363 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:20,364 INFO L82 PathProgramCache]: Analyzing trace with hash -800438035, now seen corresponding path program 1 times [2020-10-15 03:15:20,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:20,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873075650] [2020-10-15 03:15:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:20,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:20,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:20,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:21,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:21,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:22,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:25,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:25,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:15:25,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:15:25,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:15:25,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:25,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:25,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:15:25,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:15:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:25,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:25,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:25,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:25,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:15:25,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:25,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:25,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:25,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:25,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:25,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:25,759 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 03:15:25,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873075650] [2020-10-15 03:15:25,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:25,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:15:25,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527319384] [2020-10-15 03:15:25,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:15:25,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:25,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:15:25,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:15:25,761 INFO L87 Difference]: Start difference. First operand 1945 states and 2820 transitions. Second operand 10 states. [2020-10-15 03:15:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:28,320 INFO L93 Difference]: Finished difference Result 7793 states and 11517 transitions. [2020-10-15 03:15:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:15:28,321 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-15 03:15:28,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:28,352 INFO L225 Difference]: With dead ends: 7793 [2020-10-15 03:15:28,352 INFO L226 Difference]: Without dead ends: 6918 [2020-10-15 03:15:28,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:15:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2020-10-15 03:15:28,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 1885. [2020-10-15 03:15:28,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-15 03:15:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2737 transitions. [2020-10-15 03:15:28,813 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2737 transitions. Word has length 55 [2020-10-15 03:15:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:28,814 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 2737 transitions. [2020-10-15 03:15:28,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:15:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2737 transitions. [2020-10-15 03:15:28,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:15:28,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:28,815 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] [2020-10-15 03:15:28,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:15:28,815 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:28,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:28,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1750990588, now seen corresponding path program 1 times [2020-10-15 03:15:28,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:28,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719211089] [2020-10-15 03:15:28,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:33,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:33,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:15:33,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:15:33,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:15:33,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:33,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:15:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:15:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:34,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:34,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:34,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:34,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:34,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:15:34,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:34,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:34,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:34,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:34,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:34,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:34,155 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 03:15:34,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719211089] [2020-10-15 03:15:34,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:34,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:15:34,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494959883] [2020-10-15 03:15:34,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:15:34,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:34,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:15:34,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:15:34,157 INFO L87 Difference]: Start difference. First operand 1885 states and 2737 transitions. Second operand 9 states. [2020-10-15 03:15:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:35,503 INFO L93 Difference]: Finished difference Result 2707 states and 3951 transitions. [2020-10-15 03:15:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:15:35,504 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-15 03:15:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:35,512 INFO L225 Difference]: With dead ends: 2707 [2020-10-15 03:15:35,512 INFO L226 Difference]: Without dead ends: 2258 [2020-10-15 03:15:35,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:15:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2020-10-15 03:15:35,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1843. [2020-10-15 03:15:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-10-15 03:15:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2680 transitions. [2020-10-15 03:15:35,877 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2680 transitions. Word has length 55 [2020-10-15 03:15:35,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:35,877 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2680 transitions. [2020-10-15 03:15:35,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:15:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2680 transitions. [2020-10-15 03:15:35,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:15:35,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:35,879 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] [2020-10-15 03:15:35,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:15:35,879 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:35,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:35,880 INFO L82 PathProgramCache]: Analyzing trace with hash -361635009, now seen corresponding path program 1 times [2020-10-15 03:15:35,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:35,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135531097] [2020-10-15 03:15:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:35,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:35,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:40,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:40,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:15:40,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:15:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:15:40,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:40,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:15:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:15:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:41,056 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 25 [2020-10-15 03:15:41,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:41,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:41,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:41,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:15:41,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:41,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:41,195 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 03:15:41,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135531097] [2020-10-15 03:15:41,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:41,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:15:41,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101878630] [2020-10-15 03:15:41,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:15:41,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:41,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:15:41,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:15:41,197 INFO L87 Difference]: Start difference. First operand 1843 states and 2680 transitions. Second operand 10 states. [2020-10-15 03:15:44,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:44,379 INFO L93 Difference]: Finished difference Result 7591 states and 11256 transitions. [2020-10-15 03:15:44,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:15:44,380 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-15 03:15:44,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:44,405 INFO L225 Difference]: With dead ends: 7591 [2020-10-15 03:15:44,405 INFO L226 Difference]: Without dead ends: 6770 [2020-10-15 03:15:44,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:15:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2020-10-15 03:15:44,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 1828. [2020-10-15 03:15:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-10-15 03:15:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2662 transitions. [2020-10-15 03:15:44,991 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2662 transitions. Word has length 55 [2020-10-15 03:15:44,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:44,996 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 2662 transitions. [2020-10-15 03:15:44,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:15:44,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2662 transitions. [2020-10-15 03:15:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:15:44,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:44,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:44,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:15:44,999 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:44,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:44,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1850922757, now seen corresponding path program 1 times [2020-10-15 03:15:45,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:45,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600784352] [2020-10-15 03:15:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:45,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:50,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:15:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:15:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:15:50,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:50,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:15:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:15:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:15:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:50,197 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-15 03:15:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:50,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:50,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:50,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:50,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:15:50,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:50,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:15:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:15:50,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:50,233 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 03:15:50,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600784352] [2020-10-15 03:15:50,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:50,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:15:50,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709144201] [2020-10-15 03:15:50,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:15:50,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:50,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:15:50,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:15:50,237 INFO L87 Difference]: Start difference. First operand 1828 states and 2662 transitions. Second operand 6 states. [2020-10-15 03:15:50,408 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:15:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:51,680 INFO L93 Difference]: Finished difference Result 5070 states and 7528 transitions. [2020-10-15 03:15:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:15:51,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:15:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:51,696 INFO L225 Difference]: With dead ends: 5070 [2020-10-15 03:15:51,697 INFO L226 Difference]: Without dead ends: 3340 [2020-10-15 03:15:51,703 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 03:15:51,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2020-10-15 03:15:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 3338. [2020-10-15 03:15:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3338 states. [2020-10-15 03:15:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 4938 transitions. [2020-10-15 03:15:52,622 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 4938 transitions. Word has length 73 [2020-10-15 03:15:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:52,622 INFO L479 AbstractCegarLoop]: Abstraction has 3338 states and 4938 transitions. [2020-10-15 03:15:52,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:15:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 4938 transitions. [2020-10-15 03:15:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:15:52,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:52,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:52,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:15:52,625 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:52,625 INFO L82 PathProgramCache]: Analyzing trace with hash 932947148, now seen corresponding path program 1 times [2020-10-15 03:15:52,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:52,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383903923] [2020-10-15 03:15:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:52,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:53,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:57,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:57,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:15:57,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:15:57,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:15:57,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:57,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:15:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:15:57,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:15:57,902 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 23 [2020-10-15 03:15:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:58,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:58,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:58,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:58,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:15:58,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:58,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:58,084 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 03:15:58,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383903923] [2020-10-15 03:15:58,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:58,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:15:58,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110811059] [2020-10-15 03:15:58,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:15:58,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:15:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:15:58,086 INFO L87 Difference]: Start difference. First operand 3338 states and 4938 transitions. Second operand 9 states. [2020-10-15 03:16:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:01,861 INFO L93 Difference]: Finished difference Result 14364 states and 21371 transitions. [2020-10-15 03:16:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:16:01,862 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 74 [2020-10-15 03:16:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:01,881 INFO L225 Difference]: With dead ends: 14364 [2020-10-15 03:16:01,882 INFO L226 Difference]: Without dead ends: 11150 [2020-10-15 03:16:01,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:16:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11150 states. [2020-10-15 03:16:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11150 to 6346. [2020-10-15 03:16:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6346 states. [2020-10-15 03:16:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6346 states to 6346 states and 9446 transitions. [2020-10-15 03:16:03,282 INFO L78 Accepts]: Start accepts. Automaton has 6346 states and 9446 transitions. Word has length 74 [2020-10-15 03:16:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:03,283 INFO L479 AbstractCegarLoop]: Abstraction has 6346 states and 9446 transitions. [2020-10-15 03:16:03,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 6346 states and 9446 transitions. [2020-10-15 03:16:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:16:03,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:03,288 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] [2020-10-15 03:16:03,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:16:03,290 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:03,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:03,291 INFO L82 PathProgramCache]: Analyzing trace with hash -894510820, now seen corresponding path program 1 times [2020-10-15 03:16:03,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:03,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615259983] [2020-10-15 03:16:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:03,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:08,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:08,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:16:08,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:16:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:16:08,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:08,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:16:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:08,841 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-15 03:16:08,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:08,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:08,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:08,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:08,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:08,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:16:08,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:08,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:08,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:08,869 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 03:16:08,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615259983] [2020-10-15 03:16:08,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:08,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:08,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739671045] [2020-10-15 03:16:08,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:08,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:08,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:08,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:08,874 INFO L87 Difference]: Start difference. First operand 6346 states and 9446 transitions. Second operand 9 states. [2020-10-15 03:16:11,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:11,718 INFO L93 Difference]: Finished difference Result 12626 states and 18838 transitions. [2020-10-15 03:16:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:16:11,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-15 03:16:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:11,737 INFO L225 Difference]: With dead ends: 12626 [2020-10-15 03:16:11,738 INFO L226 Difference]: Without dead ends: 6428 [2020-10-15 03:16:11,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:16:11,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6428 states. [2020-10-15 03:16:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6428 to 4842. [2020-10-15 03:16:13,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4842 states. [2020-10-15 03:16:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 7204 transitions. [2020-10-15 03:16:13,253 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 7204 transitions. Word has length 75 [2020-10-15 03:16:13,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:13,254 INFO L479 AbstractCegarLoop]: Abstraction has 4842 states and 7204 transitions. [2020-10-15 03:16:13,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 7204 transitions. [2020-10-15 03:16:13,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:16:13,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:13,257 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] [2020-10-15 03:16:13,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:16:13,258 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:13,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:13,258 INFO L82 PathProgramCache]: Analyzing trace with hash 250021549, now seen corresponding path program 1 times [2020-10-15 03:16:13,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:13,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449117393] [2020-10-15 03:16:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:14,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:18,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:16:18,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:16:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:16:18,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:18,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:16:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:16:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:16:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:18,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:18,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:18,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:18,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:16:18,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:18,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:18,443 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 03:16:18,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449117393] [2020-10-15 03:16:18,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:18,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:16:18,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447442507] [2020-10-15 03:16:18,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:16:18,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:18,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:16:18,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:16:18,445 INFO L87 Difference]: Start difference. First operand 4842 states and 7204 transitions. Second operand 5 states. [2020-10-15 03:16:18,575 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:16:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:20,717 INFO L93 Difference]: Finished difference Result 11172 states and 16620 transitions. [2020-10-15 03:16:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:16:20,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-15 03:16:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:20,736 INFO L225 Difference]: With dead ends: 11172 [2020-10-15 03:16:20,736 INFO L226 Difference]: Without dead ends: 6498 [2020-10-15 03:16:20,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:16:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2020-10-15 03:16:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 6446. [2020-10-15 03:16:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6446 states. [2020-10-15 03:16:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6446 states to 6446 states and 9436 transitions. [2020-10-15 03:16:22,699 INFO L78 Accepts]: Start accepts. Automaton has 6446 states and 9436 transitions. Word has length 75 [2020-10-15 03:16:22,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:22,699 INFO L479 AbstractCegarLoop]: Abstraction has 6446 states and 9436 transitions. [2020-10-15 03:16:22,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:16:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6446 states and 9436 transitions. [2020-10-15 03:16:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:16:22,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:22,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:22,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:16:22,703 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:22,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1273586376, now seen corresponding path program 1 times [2020-10-15 03:16:22,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:22,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616185781] [2020-10-15 03:16:22,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:22,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:22,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:22,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:27,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:16:27,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:16:27,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4556 [2020-10-15 03:16:27,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:27,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:16:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:16:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:27,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:27,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:27,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:27,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:16:27,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:27,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:16:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:27,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616185781] [2020-10-15 03:16:27,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:27,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:16:27,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355334368] [2020-10-15 03:16:27,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:27,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:27,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:27,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:27,414 INFO L87 Difference]: Start difference. First operand 6446 states and 9436 transitions. Second operand 6 states. [2020-10-15 03:16:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:29,526 INFO L93 Difference]: Finished difference Result 12570 states and 18529 transitions. [2020-10-15 03:16:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:16:29,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-15 03:16:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:29,535 INFO L225 Difference]: With dead ends: 12570 [2020-10-15 03:16:29,535 INFO L226 Difference]: Without dead ends: 6230 [2020-10-15 03:16:29,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:29,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2020-10-15 03:16:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 6230. [2020-10-15 03:16:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6230 states. [2020-10-15 03:16:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 9045 transitions. [2020-10-15 03:16:31,374 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 9045 transitions. Word has length 76 [2020-10-15 03:16:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:31,374 INFO L479 AbstractCegarLoop]: Abstraction has 6230 states and 9045 transitions. [2020-10-15 03:16:31,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 9045 transitions. [2020-10-15 03:16:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:16:31,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:31,377 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] [2020-10-15 03:16:31,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:16:31,378 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:31,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:31,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1346360091, now seen corresponding path program 1 times [2020-10-15 03:16:31,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:31,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633620604] [2020-10-15 03:16:31,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:36,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:16:36,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:16:36,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:36,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:16:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:36,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:36,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:36,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:36,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:16:36,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:36,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:36,675 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 03:16:36,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633620604] [2020-10-15 03:16:36,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:36,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:36,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899898124] [2020-10-15 03:16:36,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:36,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:36,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:36,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:36,677 INFO L87 Difference]: Start difference. First operand 6230 states and 9045 transitions. Second operand 9 states. [2020-10-15 03:16:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:41,640 INFO L93 Difference]: Finished difference Result 18515 states and 26940 transitions. [2020-10-15 03:16:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:16:41,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-15 03:16:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:41,655 INFO L225 Difference]: With dead ends: 18515 [2020-10-15 03:16:41,655 INFO L226 Difference]: Without dead ends: 12391 [2020-10-15 03:16:41,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:16:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12391 states. [2020-10-15 03:16:43,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12391 to 6230. [2020-10-15 03:16:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6230 states. [2020-10-15 03:16:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 9042 transitions. [2020-10-15 03:16:43,452 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 9042 transitions. Word has length 77 [2020-10-15 03:16:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:43,453 INFO L479 AbstractCegarLoop]: Abstraction has 6230 states and 9042 transitions. [2020-10-15 03:16:43,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 9042 transitions. [2020-10-15 03:16:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 03:16:43,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:43,455 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] [2020-10-15 03:16:43,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:16:43,455 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:43,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:43,456 INFO L82 PathProgramCache]: Analyzing trace with hash -118365620, now seen corresponding path program 1 times [2020-10-15 03:16:43,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:43,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517181190] [2020-10-15 03:16:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:43,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:43,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:43,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:44,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:44,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 03:16:44,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:16:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-15 03:16:44,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:44,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:16:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 03:16:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:44,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:44,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:44,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:16:44,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:44,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:16:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:44,720 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 03:16:44,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517181190] [2020-10-15 03:16:44,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:44,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:16:44,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812600008] [2020-10-15 03:16:44,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:44,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:44,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:44,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:44,725 INFO L87 Difference]: Start difference. First operand 6230 states and 9042 transitions. Second operand 6 states. [2020-10-15 03:16:46,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:46,810 INFO L93 Difference]: Finished difference Result 11104 states and 16135 transitions. [2020-10-15 03:16:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:16:46,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-15 03:16:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:46,818 INFO L225 Difference]: With dead ends: 11104 [2020-10-15 03:16:46,818 INFO L226 Difference]: Without dead ends: 4971 [2020-10-15 03:16:46,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:46,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4971 states. [2020-10-15 03:16:48,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4971 to 4969. [2020-10-15 03:16:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4969 states. [2020-10-15 03:16:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4969 states to 4969 states and 7107 transitions. [2020-10-15 03:16:48,284 INFO L78 Accepts]: Start accepts. Automaton has 4969 states and 7107 transitions. Word has length 78 [2020-10-15 03:16:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:48,284 INFO L479 AbstractCegarLoop]: Abstraction has 4969 states and 7107 transitions. [2020-10-15 03:16:48,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:48,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4969 states and 7107 transitions. [2020-10-15 03:16:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:16:48,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:48,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:48,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:16:48,287 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:48,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2057675486, now seen corresponding path program 1 times [2020-10-15 03:16:48,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:48,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211637754] [2020-10-15 03:16:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:48,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:53,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:53,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:16:53,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:16:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:16:53,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:53,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:16:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:16:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:16:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:53,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:53,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:53,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:53,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:53,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:16:53,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:53,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:16:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:53,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211637754] [2020-10-15 03:16:53,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:53,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:53,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762443557] [2020-10-15 03:16:53,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:16:53,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:53,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:16:53,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:16:53,552 INFO L87 Difference]: Start difference. First operand 4969 states and 7107 transitions. Second operand 10 states. [2020-10-15 03:16:53,698 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-15 03:16:55,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:55,864 INFO L93 Difference]: Finished difference Result 9085 states and 13082 transitions. [2020-10-15 03:16:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:55,865 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-15 03:16:55,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:55,880 INFO L225 Difference]: With dead ends: 9085 [2020-10-15 03:16:55,881 INFO L226 Difference]: Without dead ends: 4949 [2020-10-15 03:16:55,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:16:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2020-10-15 03:16:57,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4947. [2020-10-15 03:16:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4947 states. [2020-10-15 03:16:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7082 transitions. [2020-10-15 03:16:57,642 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7082 transitions. Word has length 79 [2020-10-15 03:16:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:57,643 INFO L479 AbstractCegarLoop]: Abstraction has 4947 states and 7082 transitions. [2020-10-15 03:16:57,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:16:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7082 transitions. [2020-10-15 03:16:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 03:16:57,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:57,644 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] [2020-10-15 03:16:57,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:16:57,645 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash 588194416, now seen corresponding path program 1 times [2020-10-15 03:16:57,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:57,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445106038] [2020-10-15 03:16:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:57,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:57,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:01,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:02,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:02,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 03:17:02,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:17:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:17:02,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:02,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:02,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:02,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:02,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:17:02,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:02,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:02,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:02,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:02,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:02,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:02,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:17:02,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:02,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:02,828 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 03:17:02,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445106038] [2020-10-15 03:17:02,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:02,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:17:02,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867442100] [2020-10-15 03:17:02,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:02,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:02,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:02,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:02,837 INFO L87 Difference]: Start difference. First operand 4947 states and 7082 transitions. Second operand 6 states. [2020-10-15 03:17:05,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:05,480 INFO L93 Difference]: Finished difference Result 12067 states and 17407 transitions. [2020-10-15 03:17:05,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:05,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-15 03:17:05,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:05,489 INFO L225 Difference]: With dead ends: 12067 [2020-10-15 03:17:05,490 INFO L226 Difference]: Without dead ends: 7953 [2020-10-15 03:17:05,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:17:05,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7953 states. [2020-10-15 03:17:06,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7953 to 4969. [2020-10-15 03:17:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4969 states. [2020-10-15 03:17:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4969 states to 4969 states and 7106 transitions. [2020-10-15 03:17:06,950 INFO L78 Accepts]: Start accepts. Automaton has 4969 states and 7106 transitions. Word has length 80 [2020-10-15 03:17:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:06,951 INFO L479 AbstractCegarLoop]: Abstraction has 4969 states and 7106 transitions. [2020-10-15 03:17:06,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4969 states and 7106 transitions. [2020-10-15 03:17:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 03:17:06,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:06,953 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] [2020-10-15 03:17:06,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:17:06,954 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1562157525, now seen corresponding path program 1 times [2020-10-15 03:17:06,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:06,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929623172] [2020-10-15 03:17:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:07,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:11,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:11,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 03:17:11,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:17:11,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:17:11,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:11,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 03:17:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:17:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:12,499 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-10-15 03:17:12,839 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-15 03:17:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:12,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:12,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:12,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:12,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:17:12,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:12,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:12,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:12,878 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 03:17:12,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929623172] [2020-10-15 03:17:12,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:12,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-15 03:17:12,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835178540] [2020-10-15 03:17:12,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 03:17:12,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:12,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 03:17:12,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:17:12,880 INFO L87 Difference]: Start difference. First operand 4969 states and 7106 transitions. Second operand 18 states. [2020-10-15 03:17:13,156 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-15 03:17:13,634 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-15 03:17:13,952 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-15 03:17:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:20,331 INFO L93 Difference]: Finished difference Result 17147 states and 24649 transitions. [2020-10-15 03:17:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 03:17:20,331 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-15 03:17:20,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:20,350 INFO L225 Difference]: With dead ends: 17147 [2020-10-15 03:17:20,351 INFO L226 Difference]: Without dead ends: 14385 [2020-10-15 03:17:20,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 03:17:20,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14385 states. [2020-10-15 03:17:22,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14385 to 4973. [2020-10-15 03:17:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4973 states. [2020-10-15 03:17:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4973 states to 4973 states and 7110 transitions. [2020-10-15 03:17:22,071 INFO L78 Accepts]: Start accepts. Automaton has 4973 states and 7110 transitions. Word has length 80 [2020-10-15 03:17:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:22,071 INFO L479 AbstractCegarLoop]: Abstraction has 4973 states and 7110 transitions. [2020-10-15 03:17:22,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 03:17:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4973 states and 7110 transitions. [2020-10-15 03:17:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 03:17:22,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:22,073 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] [2020-10-15 03:17:22,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:17:22,074 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:22,074 INFO L82 PathProgramCache]: Analyzing trace with hash -187904212, now seen corresponding path program 1 times [2020-10-15 03:17:22,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:22,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423984904] [2020-10-15 03:17:22,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:24,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:27,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:27,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 03:17:27,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:17:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5255 [2020-10-15 03:17:27,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:27,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:17:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:17:27,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:27,562 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 03:17:27,734 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-15 03:17:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:27,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:27,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:27,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:27,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:17:27,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:27,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:17:27,782 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 03:17:27,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423984904] [2020-10-15 03:17:27,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:27,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:17:27,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169066861] [2020-10-15 03:17:27,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:17:27,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:27,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:17:27,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:17:27,785 INFO L87 Difference]: Start difference. First operand 4973 states and 7110 transitions. Second operand 9 states. [2020-10-15 03:17:27,990 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-15 03:17:31,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:31,515 INFO L93 Difference]: Finished difference Result 10491 states and 15289 transitions. [2020-10-15 03:17:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:17:31,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2020-10-15 03:17:31,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:31,527 INFO L225 Difference]: With dead ends: 10491 [2020-10-15 03:17:31,528 INFO L226 Difference]: Without dead ends: 6377 [2020-10-15 03:17:31,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:17:31,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6377 states. [2020-10-15 03:17:32,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6377 to 4189. [2020-10-15 03:17:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4189 states. [2020-10-15 03:17:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6053 transitions. [2020-10-15 03:17:32,837 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6053 transitions. Word has length 81 [2020-10-15 03:17:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:32,837 INFO L479 AbstractCegarLoop]: Abstraction has 4189 states and 6053 transitions. [2020-10-15 03:17:32,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:17:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6053 transitions. [2020-10-15 03:17:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 03:17:32,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:32,839 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] [2020-10-15 03:17:32,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:17:32,839 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:32,839 INFO L82 PathProgramCache]: Analyzing trace with hash 786058897, now seen corresponding path program 1 times [2020-10-15 03:17:32,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:32,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493713292] [2020-10-15 03:17:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:32,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:33,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:33,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 03:17:33,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:17:33,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-15 03:17:33,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:33,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-15 03:17:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 03:17:33,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:33,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:33,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:33,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:33,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:33,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:17:33,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:33,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:33,433 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 03:17:33,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493713292] [2020-10-15 03:17:33,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:33,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:17:33,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115243363] [2020-10-15 03:17:33,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:17:33,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:33,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:17:33,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:17:33,435 INFO L87 Difference]: Start difference. First operand 4189 states and 6053 transitions. Second operand 4 states. [2020-10-15 03:17:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:36,485 INFO L93 Difference]: Finished difference Result 11961 states and 17203 transitions. [2020-10-15 03:17:36,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:17:36,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-15 03:17:36,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:36,509 INFO L225 Difference]: With dead ends: 11961 [2020-10-15 03:17:36,509 INFO L226 Difference]: Without dead ends: 7847 [2020-10-15 03:17:36,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:17:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7847 states. [2020-10-15 03:17:38,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7847 to 7465. [2020-10-15 03:17:38,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7465 states. [2020-10-15 03:17:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7465 states to 7465 states and 10658 transitions. [2020-10-15 03:17:38,991 INFO L78 Accepts]: Start accepts. Automaton has 7465 states and 10658 transitions. Word has length 81 [2020-10-15 03:17:38,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:38,992 INFO L479 AbstractCegarLoop]: Abstraction has 7465 states and 10658 transitions. [2020-10-15 03:17:38,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:17:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7465 states and 10658 transitions. [2020-10-15 03:17:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:17:38,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:38,993 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] [2020-10-15 03:17:38,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:17:38,993 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:38,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:38,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1980440544, now seen corresponding path program 1 times [2020-10-15 03:17:38,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:38,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379476485] [2020-10-15 03:17:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:39,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:39,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:44,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:44,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:17:44,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:17:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:17:44,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:44,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:44,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:17:44,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:44,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:44,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:44,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:44,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:17:44,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:44,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:44,175 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 03:17:44,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379476485] [2020-10-15 03:17:44,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:44,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:17:44,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926967132] [2020-10-15 03:17:44,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:44,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:44,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:44,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:44,177 INFO L87 Difference]: Start difference. First operand 7465 states and 10658 transitions. Second operand 6 states. [2020-10-15 03:17:44,327 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-15 03:17:46,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:46,707 INFO L93 Difference]: Finished difference Result 11123 states and 15872 transitions. [2020-10-15 03:17:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:46,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-15 03:17:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:46,715 INFO L225 Difference]: With dead ends: 11123 [2020-10-15 03:17:46,716 INFO L226 Difference]: Without dead ends: 6183 [2020-10-15 03:17:46,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:17:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6183 states. [2020-10-15 03:17:48,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6183 to 5015. [2020-10-15 03:17:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5015 states. [2020-10-15 03:17:48,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5015 states to 5015 states and 7132 transitions. [2020-10-15 03:17:48,418 INFO L78 Accepts]: Start accepts. Automaton has 5015 states and 7132 transitions. Word has length 82 [2020-10-15 03:17:48,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:48,418 INFO L479 AbstractCegarLoop]: Abstraction has 5015 states and 7132 transitions. [2020-10-15 03:17:48,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:48,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5015 states and 7132 transitions. [2020-10-15 03:17:48,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:17:48,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:48,420 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] [2020-10-15 03:17:48,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 03:17:48,420 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:48,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1542663099, now seen corresponding path program 1 times [2020-10-15 03:17:48,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:48,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507583555] [2020-10-15 03:17:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:48,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:48,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:48,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:17:48,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:17:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-15 03:17:48,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:48,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-15 03:17:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 03:17:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:48,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:48,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:48,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:48,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:48,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:48,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:48,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:48,791 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 03:17:48,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507583555] [2020-10-15 03:17:48,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:48,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:17:48,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059973396] [2020-10-15 03:17:48,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:17:48,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:48,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:17:48,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:17:48,793 INFO L87 Difference]: Start difference. First operand 5015 states and 7132 transitions. Second operand 4 states. [2020-10-15 03:17:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:52,470 INFO L93 Difference]: Finished difference Result 14287 states and 20174 transitions. [2020-10-15 03:17:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:17:52,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-15 03:17:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:52,482 INFO L225 Difference]: With dead ends: 14287 [2020-10-15 03:17:52,482 INFO L226 Difference]: Without dead ends: 9347 [2020-10-15 03:17:52,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:17:52,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9347 states. [2020-10-15 03:17:55,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9347 to 8889. [2020-10-15 03:17:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8889 states. [2020-10-15 03:17:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8889 states to 8889 states and 12512 transitions. [2020-10-15 03:17:55,464 INFO L78 Accepts]: Start accepts. Automaton has 8889 states and 12512 transitions. Word has length 82 [2020-10-15 03:17:55,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:55,464 INFO L479 AbstractCegarLoop]: Abstraction has 8889 states and 12512 transitions. [2020-10-15 03:17:55,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:17:55,464 INFO L276 IsEmpty]: Start isEmpty. Operand 8889 states and 12512 transitions. [2020-10-15 03:17:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:17:55,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:55,465 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 03:17:55,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 03:17:55,465 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:55,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:55,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1238845242, now seen corresponding path program 1 times [2020-10-15 03:17:55,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:55,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264740872] [2020-10-15 03:17:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:55,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:55,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:55,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:17:55,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-15 03:17:55,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:55,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-15 03:17:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 03:17:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:55,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:55,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:55,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:55,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:55,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:55,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:55,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:55,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:55,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:55,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:55,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:55,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:55,827 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 03:17:55,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264740872] [2020-10-15 03:17:55,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:55,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:55,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509384284] [2020-10-15 03:17:55,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:55,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:55,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:55,829 INFO L87 Difference]: Start difference. First operand 8889 states and 12512 transitions. Second operand 6 states. [2020-10-15 03:18:02,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:02,771 INFO L93 Difference]: Finished difference Result 17159 states and 23885 transitions. [2020-10-15 03:18:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:18:02,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-15 03:18:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:02,794 INFO L225 Difference]: With dead ends: 17159 [2020-10-15 03:18:02,794 INFO L226 Difference]: Without dead ends: 17157 [2020-10-15 03:18:02,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17157 states. [2020-10-15 03:18:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17157 to 9537. [2020-10-15 03:18:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9537 states. [2020-10-15 03:18:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9537 states to 9537 states and 13128 transitions. [2020-10-15 03:18:06,482 INFO L78 Accepts]: Start accepts. Automaton has 9537 states and 13128 transitions. Word has length 83 [2020-10-15 03:18:06,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:06,482 INFO L479 AbstractCegarLoop]: Abstraction has 9537 states and 13128 transitions. [2020-10-15 03:18:06,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 9537 states and 13128 transitions. [2020-10-15 03:18:06,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:18:06,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:06,483 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 03:18:06,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 03:18:06,483 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:06,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:06,484 INFO L82 PathProgramCache]: Analyzing trace with hash 525193418, now seen corresponding path program 1 times [2020-10-15 03:18:06,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:06,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185396100] [2020-10-15 03:18:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:06,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:18:06,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:18:06,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-15 03:18:06,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:06,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:18:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:18:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:07,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:07,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:07,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:07,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:07,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:18:07,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:07,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:07,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:07,082 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 03:18:07,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185396100] [2020-10-15 03:18:07,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:07,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:18:07,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769515539] [2020-10-15 03:18:07,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:07,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:07,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:07,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:07,084 INFO L87 Difference]: Start difference. First operand 9537 states and 13128 transitions. Second operand 6 states. [2020-10-15 03:18:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:13,577 INFO L93 Difference]: Finished difference Result 23283 states and 32227 transitions. [2020-10-15 03:18:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:18:13,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-15 03:18:13,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:13,596 INFO L225 Difference]: With dead ends: 23283 [2020-10-15 03:18:13,596 INFO L226 Difference]: Without dead ends: 15389 [2020-10-15 03:18:13,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:18:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15389 states. [2020-10-15 03:18:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15389 to 15145. [2020-10-15 03:18:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15145 states. [2020-10-15 03:18:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15145 states to 15145 states and 20344 transitions. [2020-10-15 03:18:19,504 INFO L78 Accepts]: Start accepts. Automaton has 15145 states and 20344 transitions. Word has length 84 [2020-10-15 03:18:19,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:19,505 INFO L479 AbstractCegarLoop]: Abstraction has 15145 states and 20344 transitions. [2020-10-15 03:18:19,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 15145 states and 20344 transitions. [2020-10-15 03:18:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:18:19,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:19,506 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 03:18:19,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 03:18:19,506 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:19,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1997122467, now seen corresponding path program 1 times [2020-10-15 03:18:19,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:19,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784772855] [2020-10-15 03:18:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:19,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:19,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:20,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:20,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:20,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:22,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking...