/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:33:08,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:33:08,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:33:08,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:33:08,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:33:08,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:33:08,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:33:08,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:33:08,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:33:08,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:33:08,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:33:08,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:33:08,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:33:08,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:33:08,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:33:08,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:33:08,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:33:08,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:33:08,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:33:08,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:33:08,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:33:08,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:33:08,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:33:08,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:33:08,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:33:08,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:33:08,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:33:08,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:33:08,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:33:08,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:33:08,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:33:08,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:33:08,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:33:08,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:33:08,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:33:08,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:33:08,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:33:08,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:33:08,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:33:08,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:33:08,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:33:08,875 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 [2020-10-13 14:33:08,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:33:08,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:33:08,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:33:08,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:33:08,899 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:33:08,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:33:08,899 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:33:08,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:33:08,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:33:08,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:33:08,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:33:08,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:33:08,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:33:08,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:33:08,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:33:08,901 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:33:08,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:33:08,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:33:08,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:33:08,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:33:08,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:33:08,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:33:08,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:33:08,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:33:08,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:33:08,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:33:08,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:33:08,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:33:08,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:33:08,904 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:33:09,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:33:09,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:33:09,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:33:09,243 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:33:09,244 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:33:09,245 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:33:09,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03140aa04/3120953b1c4e460b99b4d3fe0f4996a4/FLAGec7255421 [2020-10-13 14:33:09,940 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:33:09,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:33:09,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03140aa04/3120953b1c4e460b99b4d3fe0f4996a4/FLAGec7255421 [2020-10-13 14:33:10,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03140aa04/3120953b1c4e460b99b4d3fe0f4996a4 [2020-10-13 14:33:10,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:33:10,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:33:10,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:33:10,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:33:10,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:33:10,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:33:10" (1/1) ... [2020-10-13 14:33:10,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a05326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:10, skipping insertion in model container [2020-10-13 14:33:10,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:33:10" (1/1) ... [2020-10-13 14:33:10,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:33:10,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:33:10,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:33:10,932 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:33:11,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:33:11,297 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:33:11,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:11 WrapperNode [2020-10-13 14:33:11,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:33:11,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:33:11,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:33:11,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:33:11,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:11" (1/1) ... [2020-10-13 14:33:11,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:11" (1/1) ... [2020-10-13 14:33:11,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:11" (1/1) ... [2020-10-13 14:33:11,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:11" (1/1) ... [2020-10-13 14:33:11,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:11" (1/1) ... [2020-10-13 14:33:11,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:11" (1/1) ... [2020-10-13 14:33:11,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:11" (1/1) ... [2020-10-13 14:33:11,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:33:11,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:33:11,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:33:11,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:33:11,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:11" (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 [2020-10-13 14:33:11,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:33:11,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:33:11,544 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:33:11,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:33:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:33:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:33:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:33:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:33:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:33:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:33:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:33:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:33:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:33:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:33:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:33:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:33:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:33:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:33:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:33:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:33:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:33:13,274 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:33:13,275 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:33:13,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:33:13 BoogieIcfgContainer [2020-10-13 14:33:13,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:33:13,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:33:13,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:33:13,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:33:13,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:33:10" (1/3) ... [2020-10-13 14:33:13,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b79acdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:33:13, skipping insertion in model container [2020-10-13 14:33:13,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:11" (2/3) ... [2020-10-13 14:33:13,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b79acdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:33:13, skipping insertion in model container [2020-10-13 14:33:13,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:33:13" (3/3) ... [2020-10-13 14:33:13,292 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:33:13,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:33:13,312 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-13 14:33:13,326 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-13 14:33:13,356 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:33:13,356 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:33:13,356 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:33:13,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:33:13,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:33:13,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:33:13,357 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:33:13,357 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:33:13,387 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states. [2020-10-13 14:33:13,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:33:13,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:13,406 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] [2020-10-13 14:33:13,406 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:13,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:13,413 INFO L82 PathProgramCache]: Analyzing trace with hash 393858653, now seen corresponding path program 1 times [2020-10-13 14:33:13,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:13,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421278786] [2020-10-13 14:33:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:14,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:15,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:18,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:18,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:33:18,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:33:18,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:33:18,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 14:33:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 14:33:18,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 14:33:19,456 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:33:19,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:19,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:19,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:19,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:33:19,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:19,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:19,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421278786] [2020-10-13 14:33:19,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:19,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:33:19,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250092451] [2020-10-13 14:33:19,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:33:19,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:19,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:33:19,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:33:19,535 INFO L87 Difference]: Start difference. First operand 461 states. Second operand 4 states. [2020-10-13 14:33:20,021 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 14:33:23,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:23,387 INFO L93 Difference]: Finished difference Result 731 states and 1276 transitions. [2020-10-13 14:33:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:33:23,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-13 14:33:23,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:23,422 INFO L225 Difference]: With dead ends: 731 [2020-10-13 14:33:23,422 INFO L226 Difference]: Without dead ends: 574 [2020-10-13 14:33:23,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:33:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-13 14:33:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 568. [2020-10-13 14:33:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-10-13 14:33:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 761 transitions. [2020-10-13 14:33:23,535 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 761 transitions. Word has length 54 [2020-10-13 14:33:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:23,536 INFO L479 AbstractCegarLoop]: Abstraction has 568 states and 761 transitions. [2020-10-13 14:33:23,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:33:23,536 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 761 transitions. [2020-10-13 14:33:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:33:23,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:23,542 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] [2020-10-13 14:33:23,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:33:23,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash 773986992, now seen corresponding path program 1 times [2020-10-13 14:33:23,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:23,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167407071] [2020-10-13 14:33:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:23,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:23,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:24,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:24,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:26,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:28,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:28,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:33:28,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:33:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:33:28,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:33:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:33:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:33:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:33:29,039 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:33:29,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:29,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:29,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:29,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:29,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:33:29,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:29,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:29,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167407071] [2020-10-13 14:33:29,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:29,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:33:29,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008828699] [2020-10-13 14:33:29,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:29,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:29,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:29,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:29,091 INFO L87 Difference]: Start difference. First operand 568 states and 761 transitions. Second operand 6 states. [2020-10-13 14:33:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:31,640 INFO L93 Difference]: Finished difference Result 1273 states and 1817 transitions. [2020-10-13 14:33:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:33:31,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-13 14:33:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:31,649 INFO L225 Difference]: With dead ends: 1273 [2020-10-13 14:33:31,650 INFO L226 Difference]: Without dead ends: 1010 [2020-10-13 14:33:31,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:33:31,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-13 14:33:31,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 576. [2020-10-13 14:33:31,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-10-13 14:33:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 765 transitions. [2020-10-13 14:33:31,727 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 765 transitions. Word has length 54 [2020-10-13 14:33:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:31,728 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 765 transitions. [2020-10-13 14:33:31,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 765 transitions. [2020-10-13 14:33:31,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:33:31,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:31,733 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] [2020-10-13 14:33:31,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:33:31,734 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash 667946061, now seen corresponding path program 1 times [2020-10-13 14:33:31,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:31,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805468907] [2020-10-13 14:33:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:33,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:34,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:36,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:36,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:33:36,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:33:36,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:33:36,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:33:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:33:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:33:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:33:37,345 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:33:37,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:37,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:37,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:37,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:33:37,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:37,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:37,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805468907] [2020-10-13 14:33:37,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:37,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:33:37,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680731472] [2020-10-13 14:33:37,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:33:37,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:37,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:33:37,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:33:37,393 INFO L87 Difference]: Start difference. First operand 576 states and 765 transitions. Second operand 9 states. [2020-10-13 14:33:37,907 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-13 14:33:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:43,196 INFO L93 Difference]: Finished difference Result 1477 states and 2094 transitions. [2020-10-13 14:33:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:33:43,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-13 14:33:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:43,203 INFO L225 Difference]: With dead ends: 1477 [2020-10-13 14:33:43,204 INFO L226 Difference]: Without dead ends: 1296 [2020-10-13 14:33:43,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-10-13 14:33:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2020-10-13 14:33:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 627. [2020-10-13 14:33:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-10-13 14:33:43,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 828 transitions. [2020-10-13 14:33:43,258 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 828 transitions. Word has length 54 [2020-10-13 14:33:43,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:43,262 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 828 transitions. [2020-10-13 14:33:43,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:33:43,268 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 828 transitions. [2020-10-13 14:33:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:33:43,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:43,271 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] [2020-10-13 14:33:43,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:33:43,272 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:43,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:43,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1860274899, now seen corresponding path program 1 times [2020-10-13 14:33:43,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:43,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102231779] [2020-10-13 14:33:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:43,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:43,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:44,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:48,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:33:48,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:33:48,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:33:48,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:33:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:33:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:33:48,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:48,745 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:33:48,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:48,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:48,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:48,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:33:48,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:48,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:48,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102231779] [2020-10-13 14:33:48,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:48,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:33:48,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138352752] [2020-10-13 14:33:48,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:33:48,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:48,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:33:48,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:33:48,787 INFO L87 Difference]: Start difference. First operand 627 states and 828 transitions. Second operand 7 states. [2020-10-13 14:33:49,213 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 14:33:51,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:51,850 INFO L93 Difference]: Finished difference Result 2286 states and 3260 transitions. [2020-10-13 14:33:51,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:33:51,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-13 14:33:51,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:51,863 INFO L225 Difference]: With dead ends: 2286 [2020-10-13 14:33:51,863 INFO L226 Difference]: Without dead ends: 1849 [2020-10-13 14:33:51,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:33:51,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-10-13 14:33:51,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1436. [2020-10-13 14:33:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-13 14:33:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2040 transitions. [2020-10-13 14:33:51,960 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2040 transitions. Word has length 54 [2020-10-13 14:33:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:51,960 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 2040 transitions. [2020-10-13 14:33:51,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2040 transitions. [2020-10-13 14:33:51,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:33:51,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:51,963 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] [2020-10-13 14:33:51,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:33:51,964 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:51,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1966315830, now seen corresponding path program 1 times [2020-10-13 14:33:51,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:51,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766938770] [2020-10-13 14:33:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:52,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:54,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:57,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:33:57,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:33:57,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:33:57,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:57,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:57,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 14:33:57,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:33:57,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:57,390 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:33:57,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:57,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:57,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:57,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:33:57,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:57,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:57,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766938770] [2020-10-13 14:33:57,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:57,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:33:57,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208853025] [2020-10-13 14:33:57,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:33:57,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:57,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:33:57,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:33:57,428 INFO L87 Difference]: Start difference. First operand 1436 states and 2040 transitions. Second operand 4 states. [2020-10-13 14:33:57,820 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 14:33:59,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:59,565 INFO L93 Difference]: Finished difference Result 3221 states and 4678 transitions. [2020-10-13 14:33:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:33:59,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-13 14:33:59,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:59,577 INFO L225 Difference]: With dead ends: 3221 [2020-10-13 14:33:59,577 INFO L226 Difference]: Without dead ends: 2262 [2020-10-13 14:33:59,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:33:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2020-10-13 14:33:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2242. [2020-10-13 14:33:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2242 states. [2020-10-13 14:33:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3207 transitions. [2020-10-13 14:33:59,729 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3207 transitions. Word has length 54 [2020-10-13 14:33:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:59,729 INFO L479 AbstractCegarLoop]: Abstraction has 2242 states and 3207 transitions. [2020-10-13 14:33:59,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:33:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3207 transitions. [2020-10-13 14:33:59,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:33:59,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:59,732 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] [2020-10-13 14:33:59,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:33:59,733 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:59,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:59,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2022835488, now seen corresponding path program 1 times [2020-10-13 14:33:59,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:59,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136584406] [2020-10-13 14:33:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:00,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:00,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:00,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:03,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:04,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:34:04,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:34:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:34:04,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:04,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:34:04,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:34:04,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:34:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:05,331 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:34:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:05,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:05,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:05,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:05,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:05,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:34:05,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:05,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:34:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:05,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136584406] [2020-10-13 14:34:05,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:05,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:34:05,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928568847] [2020-10-13 14:34:05,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:34:05,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:34:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:34:05,395 INFO L87 Difference]: Start difference. First operand 2242 states and 3207 transitions. Second operand 6 states. [2020-10-13 14:34:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:07,938 INFO L93 Difference]: Finished difference Result 7360 states and 10758 transitions. [2020-10-13 14:34:07,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:34:07,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-13 14:34:07,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:07,965 INFO L225 Difference]: With dead ends: 7360 [2020-10-13 14:34:07,965 INFO L226 Difference]: Without dead ends: 5983 [2020-10-13 14:34:07,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:34:07,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5983 states. [2020-10-13 14:34:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5983 to 2229. [2020-10-13 14:34:08,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2229 states. [2020-10-13 14:34:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3169 transitions. [2020-10-13 14:34:08,189 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3169 transitions. Word has length 55 [2020-10-13 14:34:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:08,189 INFO L479 AbstractCegarLoop]: Abstraction has 2229 states and 3169 transitions. [2020-10-13 14:34:08,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:34:08,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3169 transitions. [2020-10-13 14:34:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:34:08,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:08,192 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] [2020-10-13 14:34:08,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:34:08,193 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:08,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:08,193 INFO L82 PathProgramCache]: Analyzing trace with hash -2075670050, now seen corresponding path program 1 times [2020-10-13 14:34:08,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:08,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430872944] [2020-10-13 14:34:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:08,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:08,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:08,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:08,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:09,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:09,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:13,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:13,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:34:13,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:34:13,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:34:13,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:34:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:34:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:34:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:13,732 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:34:13,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:13,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:13,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:13,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:13,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:34:13,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:13,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:34:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:13,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430872944] [2020-10-13 14:34:13,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:13,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:34:13,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603011219] [2020-10-13 14:34:13,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:34:13,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:13,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:34:13,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:34:13,788 INFO L87 Difference]: Start difference. First operand 2229 states and 3169 transitions. Second operand 7 states. [2020-10-13 14:34:14,282 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 14:34:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:16,848 INFO L93 Difference]: Finished difference Result 12550 states and 18553 transitions. [2020-10-13 14:34:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:34:16,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-13 14:34:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:16,884 INFO L225 Difference]: With dead ends: 12550 [2020-10-13 14:34:16,884 INFO L226 Difference]: Without dead ends: 10426 [2020-10-13 14:34:16,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:34:16,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10426 states. [2020-10-13 14:34:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10426 to 5504. [2020-10-13 14:34:17,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5504 states. [2020-10-13 14:34:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 8022 transitions. [2020-10-13 14:34:17,432 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 8022 transitions. Word has length 55 [2020-10-13 14:34:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:17,432 INFO L479 AbstractCegarLoop]: Abstraction has 5504 states and 8022 transitions. [2020-10-13 14:34:17,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:34:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 8022 transitions. [2020-10-13 14:34:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:34:17,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:17,436 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] [2020-10-13 14:34:17,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:34:17,437 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:17,437 INFO L82 PathProgramCache]: Analyzing trace with hash -34134691, now seen corresponding path program 1 times [2020-10-13 14:34:17,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:17,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795732201] [2020-10-13 14:34:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:17,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:22,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:22,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:22,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:34:22,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:34:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:34:22,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:34:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:34:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:34:22,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:22,947 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:34:22,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:22,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:22,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:22,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:22,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:34:22,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:22,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:22,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:22,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795732201] [2020-10-13 14:34:22,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:22,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:34:22,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037618175] [2020-10-13 14:34:22,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:34:22,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:22,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:34:22,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:34:22,981 INFO L87 Difference]: Start difference. First operand 5504 states and 8022 transitions. Second operand 9 states. [2020-10-13 14:34:23,449 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 14:34:26,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:26,880 INFO L93 Difference]: Finished difference Result 28900 states and 42084 transitions. [2020-10-13 14:34:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:34:26,881 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-13 14:34:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:26,944 INFO L225 Difference]: With dead ends: 28900 [2020-10-13 14:34:26,944 INFO L226 Difference]: Without dead ends: 24077 [2020-10-13 14:34:26,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:34:26,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24077 states. [2020-10-13 14:34:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24077 to 5597. [2020-10-13 14:34:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5597 states. [2020-10-13 14:34:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 8131 transitions. [2020-10-13 14:34:27,483 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 8131 transitions. Word has length 55 [2020-10-13 14:34:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:27,483 INFO L479 AbstractCegarLoop]: Abstraction has 5597 states and 8131 transitions. [2020-10-13 14:34:27,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:34:27,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 8131 transitions. [2020-10-13 14:34:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:34:27,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:27,487 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] [2020-10-13 14:34:27,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:34:27,487 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:27,488 INFO L82 PathProgramCache]: Analyzing trace with hash -708066936, now seen corresponding path program 1 times [2020-10-13 14:34:27,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:27,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944985937] [2020-10-13 14:34:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:28,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:28,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:28,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:28,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:29,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:32,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:32,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:34:32,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:34:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:34:32,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:34:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:34:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:34:32,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:32,906 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:34:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:32,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:32,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:32,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:32,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:32,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:34:32,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:32,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944985937] [2020-10-13 14:34:32,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:32,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:34:32,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119998073] [2020-10-13 14:34:32,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:34:32,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:32,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:34:32,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:34:32,930 INFO L87 Difference]: Start difference. First operand 5597 states and 8131 transitions. Second operand 7 states. [2020-10-13 14:34:33,330 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 14:34:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:36,151 INFO L93 Difference]: Finished difference Result 17485 states and 25890 transitions. [2020-10-13 14:34:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:34:36,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-13 14:34:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:36,187 INFO L225 Difference]: With dead ends: 17485 [2020-10-13 14:34:36,187 INFO L226 Difference]: Without dead ends: 13961 [2020-10-13 14:34:36,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:34:36,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13961 states. [2020-10-13 14:34:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13961 to 7224. [2020-10-13 14:34:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7224 states. [2020-10-13 14:34:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7224 states to 7224 states and 10555 transitions. [2020-10-13 14:34:36,820 INFO L78 Accepts]: Start accepts. Automaton has 7224 states and 10555 transitions. Word has length 55 [2020-10-13 14:34:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:36,820 INFO L479 AbstractCegarLoop]: Abstraction has 7224 states and 10555 transitions. [2020-10-13 14:34:36,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:34:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 7224 states and 10555 transitions. [2020-10-13 14:34:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:34:36,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:36,825 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] [2020-10-13 14:34:36,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:34:36,825 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:36,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1527031854, now seen corresponding path program 1 times [2020-10-13 14:34:36,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:36,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930447996] [2020-10-13 14:34:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:36,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:41,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:34:41,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:34:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:34:41,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:34:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:34:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:34:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:42,353 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:34:42,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:42,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:42,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:42,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:42,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:42,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:34:42,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:34:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:34:42,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:42,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930447996] [2020-10-13 14:34:42,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:42,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:34:42,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105269390] [2020-10-13 14:34:42,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:34:42,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:42,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:34:42,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:34:42,415 INFO L87 Difference]: Start difference. First operand 7224 states and 10555 transitions. Second operand 6 states. [2020-10-13 14:34:42,827 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:34:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:44,768 INFO L93 Difference]: Finished difference Result 14136 states and 20900 transitions. [2020-10-13 14:34:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:34:44,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 14:34:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:44,788 INFO L225 Difference]: With dead ends: 14136 [2020-10-13 14:34:44,789 INFO L226 Difference]: Without dead ends: 8788 [2020-10-13 14:34:44,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:34:44,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8788 states. [2020-10-13 14:34:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8788 to 8259. [2020-10-13 14:34:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8259 states. [2020-10-13 14:34:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8259 states to 8259 states and 12043 transitions. [2020-10-13 14:34:45,676 INFO L78 Accepts]: Start accepts. Automaton has 8259 states and 12043 transitions. Word has length 56 [2020-10-13 14:34:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:45,676 INFO L479 AbstractCegarLoop]: Abstraction has 8259 states and 12043 transitions. [2020-10-13 14:34:45,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:34:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 8259 states and 12043 transitions. [2020-10-13 14:34:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:34:45,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:45,679 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] [2020-10-13 14:34:45,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:34:45,680 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:45,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1981351863, now seen corresponding path program 1 times [2020-10-13 14:34:45,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:45,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920016385] [2020-10-13 14:34:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:45,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:48,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:50,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:50,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:34:50,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:34:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:34:50,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:34:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:34:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:34:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:51,080 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:34:51,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:51,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:51,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:51,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:34:51,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:51,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:51,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920016385] [2020-10-13 14:34:51,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:51,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:34:51,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437001221] [2020-10-13 14:34:51,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:34:51,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:51,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:34:51,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:51,111 INFO L87 Difference]: Start difference. First operand 8259 states and 12043 transitions. Second operand 4 states. [2020-10-13 14:34:51,505 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 14:34:53,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:53,996 INFO L93 Difference]: Finished difference Result 21160 states and 31208 transitions. [2020-10-13 14:34:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:34:53,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-13 14:34:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:54,026 INFO L225 Difference]: With dead ends: 21160 [2020-10-13 14:34:54,026 INFO L226 Difference]: Without dead ends: 13804 [2020-10-13 14:34:54,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:34:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13804 states. [2020-10-13 14:34:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13804 to 13678. [2020-10-13 14:34:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13678 states. [2020-10-13 14:34:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13678 states to 13678 states and 19842 transitions. [2020-10-13 14:34:55,972 INFO L78 Accepts]: Start accepts. Automaton has 13678 states and 19842 transitions. Word has length 56 [2020-10-13 14:34:55,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:55,973 INFO L479 AbstractCegarLoop]: Abstraction has 13678 states and 19842 transitions. [2020-10-13 14:34:55,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:34:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 13678 states and 19842 transitions. [2020-10-13 14:34:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:34:55,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:55,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:34:55,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:34:55,983 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:55,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:55,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1001870777, now seen corresponding path program 1 times [2020-10-13 14:34:55,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:55,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783774796] [2020-10-13 14:34:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:00,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:01,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:35:01,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:35:01,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:35:01,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:35:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:35:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:35:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:01,458 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:35:01,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:01,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:01,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:01,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:01,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:35:01,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:01,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:01,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783774796] [2020-10-13 14:35:01,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:01,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:35:01,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761978834] [2020-10-13 14:35:01,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:35:01,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:01,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:35:01,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:35:01,489 INFO L87 Difference]: Start difference. First operand 13678 states and 19842 transitions. Second operand 9 states. [2020-10-13 14:35:01,890 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 14:35:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:08,464 INFO L93 Difference]: Finished difference Result 61817 states and 89503 transitions. [2020-10-13 14:35:08,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:35:08,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-13 14:35:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:08,541 INFO L225 Difference]: With dead ends: 61817 [2020-10-13 14:35:08,542 INFO L226 Difference]: Without dead ends: 51483 [2020-10-13 14:35:08,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:35:08,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51483 states. [2020-10-13 14:35:10,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51483 to 13669. [2020-10-13 14:35:10,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13669 states. [2020-10-13 14:35:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13669 states to 13669 states and 19829 transitions. [2020-10-13 14:35:10,356 INFO L78 Accepts]: Start accepts. Automaton has 13669 states and 19829 transitions. Word has length 57 [2020-10-13 14:35:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:10,357 INFO L479 AbstractCegarLoop]: Abstraction has 13669 states and 19829 transitions. [2020-10-13 14:35:10,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:35:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 13669 states and 19829 transitions. [2020-10-13 14:35:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:35:10,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:10,361 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] [2020-10-13 14:35:10,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:35:10,361 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:10,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:10,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1381999116, now seen corresponding path program 1 times [2020-10-13 14:35:10,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:10,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288125878] [2020-10-13 14:35:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:10,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:10,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:10,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:11,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:11,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:11,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:12,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:13,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:13,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:15,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:35:15,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:35:15,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:35:15,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:35:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:35:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:35:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:15,872 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:35:15,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:15,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:15,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:35:15,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:15,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288125878] [2020-10-13 14:35:15,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:15,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:35:15,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094835817] [2020-10-13 14:35:15,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:35:15,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:15,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:35:15,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:35:15,910 INFO L87 Difference]: Start difference. First operand 13669 states and 19829 transitions. Second operand 10 states. [2020-10-13 14:35:16,353 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-13 14:35:26,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:26,436 INFO L93 Difference]: Finished difference Result 78165 states and 112829 transitions. [2020-10-13 14:35:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 14:35:26,437 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 14:35:26,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:26,532 INFO L225 Difference]: With dead ends: 78165 [2020-10-13 14:35:26,533 INFO L226 Difference]: Without dead ends: 67831 [2020-10-13 14:35:26,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:35:26,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67831 states. [2020-10-13 14:35:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67831 to 13672. [2020-10-13 14:35:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13672 states. [2020-10-13 14:35:28,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13672 states to 13672 states and 19832 transitions. [2020-10-13 14:35:28,184 INFO L78 Accepts]: Start accepts. Automaton has 13672 states and 19832 transitions. Word has length 57 [2020-10-13 14:35:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:28,184 INFO L479 AbstractCegarLoop]: Abstraction has 13672 states and 19832 transitions. [2020-10-13 14:35:28,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:35:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 13672 states and 19832 transitions. [2020-10-13 14:35:28,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:35:28,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:28,187 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] [2020-10-13 14:35:28,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:35:28,187 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:28,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:28,187 INFO L82 PathProgramCache]: Analyzing trace with hash 327938532, now seen corresponding path program 1 times [2020-10-13 14:35:28,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:28,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135955260] [2020-10-13 14:35:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:28,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:28,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:28,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:29,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:31,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:31,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:33,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:35:33,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:35:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:35:33,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:35:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:35:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:35:33,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:33,636 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:35:33,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:33,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:33,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:33,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:33,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:35:33,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:33,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:33,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:33,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:35:33,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:33,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135955260] [2020-10-13 14:35:33,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:33,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:35:33,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640501994] [2020-10-13 14:35:33,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:35:33,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:33,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:35:33,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:35:33,675 INFO L87 Difference]: Start difference. First operand 13672 states and 19832 transitions. Second operand 6 states. [2020-10-13 14:35:34,110 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-13 14:35:36,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:36,918 INFO L93 Difference]: Finished difference Result 24269 states and 35381 transitions. [2020-10-13 14:35:36,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:35:36,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 14:35:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:36,934 INFO L225 Difference]: With dead ends: 24269 [2020-10-13 14:35:36,934 INFO L226 Difference]: Without dead ends: 12593 [2020-10-13 14:35:36,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:35:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12593 states. [2020-10-13 14:35:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12593 to 10015. [2020-10-13 14:35:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10015 states. [2020-10-13 14:35:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10015 states to 10015 states and 14402 transitions. [2020-10-13 14:35:38,008 INFO L78 Accepts]: Start accepts. Automaton has 10015 states and 14402 transitions. Word has length 57 [2020-10-13 14:35:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:38,009 INFO L479 AbstractCegarLoop]: Abstraction has 10015 states and 14402 transitions. [2020-10-13 14:35:38,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:35:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 10015 states and 14402 transitions. [2020-10-13 14:35:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:35:38,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:38,011 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] [2020-10-13 14:35:38,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:35:38,011 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:38,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:38,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1806152696, now seen corresponding path program 1 times [2020-10-13 14:35:38,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:38,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767791453] [2020-10-13 14:35:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:39,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:40,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:40,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:41,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:41,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:42,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:43,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:43,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:43,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:35:43,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:35:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:35:43,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:35:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:35:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:35:43,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:43,437 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:35:43,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:43,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:43,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:43,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:43,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:43,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:35:43,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:43,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:43,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767791453] [2020-10-13 14:35:43,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:43,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:35:43,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716496242] [2020-10-13 14:35:43,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:35:43,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:43,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:35:43,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:35:43,463 INFO L87 Difference]: Start difference. First operand 10015 states and 14402 transitions. Second operand 6 states. [2020-10-13 14:35:43,854 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-13 14:35:51,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:51,480 INFO L93 Difference]: Finished difference Result 49301 states and 71935 transitions. [2020-10-13 14:35:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:35:51,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 14:35:51,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:51,527 INFO L225 Difference]: With dead ends: 49301 [2020-10-13 14:35:51,527 INFO L226 Difference]: Without dead ends: 42088 [2020-10-13 14:35:51,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:35:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42088 states. [2020-10-13 14:35:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42088 to 16805. [2020-10-13 14:35:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16805 states. [2020-10-13 14:35:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16805 states to 16805 states and 24269 transitions. [2020-10-13 14:35:53,964 INFO L78 Accepts]: Start accepts. Automaton has 16805 states and 24269 transitions. Word has length 57 [2020-10-13 14:35:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:53,964 INFO L479 AbstractCegarLoop]: Abstraction has 16805 states and 24269 transitions. [2020-10-13 14:35:53,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:35:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 16805 states and 24269 transitions. [2020-10-13 14:35:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:35:53,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:53,966 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] [2020-10-13 14:35:53,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:35:53,967 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:53,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:53,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1132220451, now seen corresponding path program 1 times [2020-10-13 14:35:53,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:53,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9744251] [2020-10-13 14:35:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:54,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:54,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:54,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:54,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:54,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:55,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:55,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:57,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:57,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:58,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:58,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:35:58,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:35:58,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:35:58,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:35:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:35:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:35:58,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:59,410 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:35:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:59,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:59,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:59,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:35:59,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:35:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:59,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9744251] [2020-10-13 14:35:59,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:59,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:35:59,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261929739] [2020-10-13 14:35:59,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:35:59,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:59,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:35:59,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:35:59,455 INFO L87 Difference]: Start difference. First operand 16805 states and 24269 transitions. Second operand 6 states. [2020-10-13 14:35:59,900 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:36:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:02,172 INFO L93 Difference]: Finished difference Result 16855 states and 24314 transitions. [2020-10-13 14:36:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:36:02,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 14:36:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:02,182 INFO L225 Difference]: With dead ends: 16855 [2020-10-13 14:36:02,182 INFO L226 Difference]: Without dead ends: 8637 [2020-10-13 14:36:02,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:36:02,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8637 states. [2020-10-13 14:36:03,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8637 to 8599. [2020-10-13 14:36:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8599 states. [2020-10-13 14:36:03,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8599 states to 8599 states and 12356 transitions. [2020-10-13 14:36:03,950 INFO L78 Accepts]: Start accepts. Automaton has 8599 states and 12356 transitions. Word has length 57 [2020-10-13 14:36:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:03,950 INFO L479 AbstractCegarLoop]: Abstraction has 8599 states and 12356 transitions. [2020-10-13 14:36:03,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:36:03,950 INFO L276 IsEmpty]: Start isEmpty. Operand 8599 states and 12356 transitions. [2020-10-13 14:36:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:36:03,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:03,952 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] [2020-10-13 14:36:03,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:36:03,952 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:03,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:03,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1278415294, now seen corresponding path program 1 times [2020-10-13 14:36:03,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:03,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990137600] [2020-10-13 14:36:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:03,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:08,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:08,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:36:08,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:36:08,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:36:08,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:08,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:36:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:36:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:36:08,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:09,467 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:36:09,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:09,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:09,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:09,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:09,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:36:09,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:09,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:09,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:09,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990137600] [2020-10-13 14:36:09,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:09,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:36:09,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490251984] [2020-10-13 14:36:09,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:36:09,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:09,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:36:09,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:36:09,498 INFO L87 Difference]: Start difference. First operand 8599 states and 12356 transitions. Second operand 10 states. [2020-10-13 14:36:09,959 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-13 14:36:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:17,497 INFO L93 Difference]: Finished difference Result 25270 states and 36342 transitions. [2020-10-13 14:36:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 14:36:17,498 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-13 14:36:17,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:17,532 INFO L225 Difference]: With dead ends: 25270 [2020-10-13 14:36:17,533 INFO L226 Difference]: Without dead ends: 25266 [2020-10-13 14:36:17,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 14:36:17,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25266 states. [2020-10-13 14:36:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25266 to 8599. [2020-10-13 14:36:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8599 states. [2020-10-13 14:36:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8599 states to 8599 states and 12355 transitions. [2020-10-13 14:36:18,846 INFO L78 Accepts]: Start accepts. Automaton has 8599 states and 12355 transitions. Word has length 58 [2020-10-13 14:36:18,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:18,847 INFO L479 AbstractCegarLoop]: Abstraction has 8599 states and 12355 transitions. [2020-10-13 14:36:18,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:36:18,847 INFO L276 IsEmpty]: Start isEmpty. Operand 8599 states and 12355 transitions. [2020-10-13 14:36:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:36:18,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:18,849 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] [2020-10-13 14:36:18,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:36:18,849 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:18,849 INFO L82 PathProgramCache]: Analyzing trace with hash -898286955, now seen corresponding path program 1 times [2020-10-13 14:36:18,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:18,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126292745] [2020-10-13 14:36:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:18,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:19,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:19,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:19,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:20,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:22,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:23,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:23,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:36:23,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:36:23,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:36:23,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:23,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:36:23,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:36:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:36:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:24,354 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:36:24,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:24,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:24,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:24,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:36:24,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:24,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:24,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126292745] [2020-10-13 14:36:24,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:24,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:36:24,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216726645] [2020-10-13 14:36:24,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:36:24,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:24,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:36:24,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:36:24,386 INFO L87 Difference]: Start difference. First operand 8599 states and 12355 transitions. Second operand 10 states. [2020-10-13 14:36:24,921 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:36:29,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:29,063 INFO L93 Difference]: Finished difference Result 23235 states and 33753 transitions. [2020-10-13 14:36:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 14:36:29,064 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-13 14:36:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:29,087 INFO L225 Difference]: With dead ends: 23235 [2020-10-13 14:36:29,087 INFO L226 Difference]: Without dead ends: 15978 [2020-10-13 14:36:29,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:36:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15978 states. [2020-10-13 14:36:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15978 to 8592. [2020-10-13 14:36:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8592 states. [2020-10-13 14:36:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8592 states to 8592 states and 12346 transitions. [2020-10-13 14:36:30,341 INFO L78 Accepts]: Start accepts. Automaton has 8592 states and 12346 transitions. Word has length 58 [2020-10-13 14:36:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:30,342 INFO L479 AbstractCegarLoop]: Abstraction has 8592 states and 12346 transitions. [2020-10-13 14:36:30,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:36:30,342 INFO L276 IsEmpty]: Start isEmpty. Operand 8592 states and 12346 transitions. [2020-10-13 14:36:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:36:30,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:30,344 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] [2020-10-13 14:36:30,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:36:30,344 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:30,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1952347539, now seen corresponding path program 1 times [2020-10-13 14:36:30,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:30,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914894784] [2020-10-13 14:36:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:30,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:30,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:31,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:31,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:32,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:33,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:34,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:34,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:34,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:35,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:35,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:36:35,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:36:35,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 14:36:35,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:36:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:36:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:36:35,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:35,936 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:36:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:35,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:35,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:35,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:35,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:36:35,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:35,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:35,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914894784] [2020-10-13 14:36:35,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:35,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:36:35,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90247502] [2020-10-13 14:36:35,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:36:35,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:35,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:36:35,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:36:35,965 INFO L87 Difference]: Start difference. First operand 8592 states and 12346 transitions. Second operand 11 states. [2020-10-13 14:36:36,983 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 281 [2020-10-13 14:36:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:46,894 INFO L93 Difference]: Finished difference Result 39395 states and 55806 transitions. [2020-10-13 14:36:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:36:46,895 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-13 14:36:46,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:46,939 INFO L225 Difference]: With dead ends: 39395 [2020-10-13 14:36:46,939 INFO L226 Difference]: Without dead ends: 39390 [2020-10-13 14:36:46,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 14:36:46,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39390 states. [2020-10-13 14:36:48,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39390 to 8592. [2020-10-13 14:36:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8592 states. [2020-10-13 14:36:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8592 states to 8592 states and 12345 transitions. [2020-10-13 14:36:48,576 INFO L78 Accepts]: Start accepts. Automaton has 8592 states and 12345 transitions. Word has length 58 [2020-10-13 14:36:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:48,576 INFO L479 AbstractCegarLoop]: Abstraction has 8592 states and 12345 transitions. [2020-10-13 14:36:48,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:36:48,577 INFO L276 IsEmpty]: Start isEmpty. Operand 8592 states and 12345 transitions. [2020-10-13 14:36:48,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:36:48,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:48,578 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] [2020-10-13 14:36:48,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:36:48,578 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:48,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:48,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1346426636, now seen corresponding path program 1 times [2020-10-13 14:36:48,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:48,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643819623] [2020-10-13 14:36:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:48,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:52,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:52,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:36:52,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:36:52,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3678 [2020-10-13 14:36:52,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:36:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 14:36:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:36:52,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:52,671 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:36:52,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:52,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:36:52,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:52,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643819623] [2020-10-13 14:36:52,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:52,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:36:52,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349847256] [2020-10-13 14:36:52,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:36:52,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:52,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:36:52,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:52,697 INFO L87 Difference]: Start difference. First operand 8592 states and 12345 transitions. Second operand 4 states. [2020-10-13 14:36:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:55,447 INFO L93 Difference]: Finished difference Result 12173 states and 17475 transitions. [2020-10-13 14:36:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:36:55,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-13 14:36:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:55,457 INFO L225 Difference]: With dead ends: 12173 [2020-10-13 14:36:55,457 INFO L226 Difference]: Without dead ends: 8420 [2020-10-13 14:36:55,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8420 states. [2020-10-13 14:36:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8420 to 7186. [2020-10-13 14:36:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7186 states. [2020-10-13 14:36:56,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7186 states to 7186 states and 10150 transitions. [2020-10-13 14:36:56,546 INFO L78 Accepts]: Start accepts. Automaton has 7186 states and 10150 transitions. Word has length 59 [2020-10-13 14:36:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:56,546 INFO L479 AbstractCegarLoop]: Abstraction has 7186 states and 10150 transitions. [2020-10-13 14:36:56,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:36:56,546 INFO L276 IsEmpty]: Start isEmpty. Operand 7186 states and 10150 transitions. [2020-10-13 14:36:56,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:36:56,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:56,548 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] [2020-10-13 14:36:56,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:36:56,548 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:56,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:56,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1236669940, now seen corresponding path program 1 times [2020-10-13 14:36:56,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:56,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128394780] [2020-10-13 14:36:56,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:56,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:56,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:57,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:57,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:58,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:58,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:36:58,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:36:58,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2025 [2020-10-13 14:36:58,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:58,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:36:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:36:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:36:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:58,984 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:36:58,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:58,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:58,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:58,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:58,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:36:58,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:59,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128394780] [2020-10-13 14:36:59,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:59,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:36:59,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328087379] [2020-10-13 14:36:59,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:36:59,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:59,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:36:59,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:59,010 INFO L87 Difference]: Start difference. First operand 7186 states and 10150 transitions. Second operand 4 states. [2020-10-13 14:37:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:37:01,728 INFO L93 Difference]: Finished difference Result 10857 states and 15346 transitions. [2020-10-13 14:37:01,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:37:01,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-13 14:37:01,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:37:01,737 INFO L225 Difference]: With dead ends: 10857 [2020-10-13 14:37:01,737 INFO L226 Difference]: Without dead ends: 7176 [2020-10-13 14:37:01,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:37:01,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7176 states. [2020-10-13 14:37:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7176 to 5718. [2020-10-13 14:37:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5718 states. [2020-10-13 14:37:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 7969 transitions. [2020-10-13 14:37:02,778 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 7969 transitions. Word has length 59 [2020-10-13 14:37:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:37:02,778 INFO L479 AbstractCegarLoop]: Abstraction has 5718 states and 7969 transitions. [2020-10-13 14:37:02,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:37:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 7969 transitions. [2020-10-13 14:37:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:37:02,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:37:02,780 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] [2020-10-13 14:37:02,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:37:02,780 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:37:02,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:37:02,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1773420331, now seen corresponding path program 1 times [2020-10-13 14:37:02,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:37:02,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498616616] [2020-10-13 14:37:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:37:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:37:02,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:02,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:03,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:03,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking...