/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.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:10:11,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:10:11,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:10:11,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:10:11,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:10:11,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:10:11,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:10:11,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:10:11,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:10:11,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:10:11,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:10:11,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:10:11,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:10:11,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:10:11,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:10:11,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:10:11,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:10:11,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:10:11,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:10:11,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:10:11,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:10:11,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:10:11,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:10:11,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:10:11,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:10:11,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:10:11,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:10:11,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:10:11,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:10:11,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:10:11,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:10:11,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:10:11,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:10:11,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:10:11,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:10:11,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:10:11,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:10:11,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:10:11,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:10:11,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:10:11,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:10:11,145 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 14:10:11,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:10:11,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:10:11,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:10:11,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:10:11,190 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:10:11,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:10:11,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:10:11,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:10:11,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:10:11,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:10:11,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:10:11,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:10:11,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:10:11,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:10:11,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:10:11,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:10:11,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:10:11,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:10:11,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:10:11,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:10:11,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:10:11,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:10:11,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:10:11,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:10:11,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:10:11,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:10:11,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:10:11,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:10:11,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:10:11,195 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 14:10:11,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:10:11,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:10:11,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:10:11,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:10:11,543 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:10:11,544 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:10:11,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b34a3a6e/0ba40f458276468ea98b2960a643d633/FLAGf9149500f [2020-10-13 14:10:12,120 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:10:12,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:10:12,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b34a3a6e/0ba40f458276468ea98b2960a643d633/FLAGf9149500f [2020-10-13 14:10:12,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b34a3a6e/0ba40f458276468ea98b2960a643d633 [2020-10-13 14:10:12,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:10:12,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:10:12,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:10:12,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:10:12,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:10:12,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:10:12" (1/1) ... [2020-10-13 14:10:12,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:12, skipping insertion in model container [2020-10-13 14:10:12,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:10:12" (1/1) ... [2020-10-13 14:10:12,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:10:12,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:10:12,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:10:12,882 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:10:13,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:10:13,126 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:10:13,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:13 WrapperNode [2020-10-13 14:10:13,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:10:13,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:10:13,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:10:13,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:10:13,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:13" (1/1) ... [2020-10-13 14:10:13,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:13" (1/1) ... [2020-10-13 14:10:13,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:13" (1/1) ... [2020-10-13 14:10:13,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:13" (1/1) ... [2020-10-13 14:10:13,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:13" (1/1) ... [2020-10-13 14:10:13,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:13" (1/1) ... [2020-10-13 14:10:13,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:13" (1/1) ... [2020-10-13 14:10:13,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:10:13,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:10:13,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:10:13,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:10:13,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:13" (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 14:10:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:10:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:10:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:10:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:10:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:10:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:10:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:10:13,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:10:13,287 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:10:13,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:10:13,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:10:13,288 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:10:13,288 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:10:13,288 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:10:13,288 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:10:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:10:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:10:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:10:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:10:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:10:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:10:14,469 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:10:14,470 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:10:14,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:10:14 BoogieIcfgContainer [2020-10-13 14:10:14,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:10:14,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:10:14,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:10:14,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:10:14,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:10:12" (1/3) ... [2020-10-13 14:10:14,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a95466f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:10:14, skipping insertion in model container [2020-10-13 14:10:14,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:13" (2/3) ... [2020-10-13 14:10:14,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a95466f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:10:14, skipping insertion in model container [2020-10-13 14:10:14,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:10:14" (3/3) ... [2020-10-13 14:10:14,483 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:10:14,493 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:10:14,501 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-13 14:10:14,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-13 14:10:14,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:10:14,541 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:10:14,541 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:10:14,541 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:10:14,541 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:10:14,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:10:14,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:10:14,542 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:10:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-13 14:10:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 14:10:14,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:14,577 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] [2020-10-13 14:10:14,578 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:14,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:14,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1846019956, now seen corresponding path program 1 times [2020-10-13 14:10:14,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:14,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105737448] [2020-10-13 14:10:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:14,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:15,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:15,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:15,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:15,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:15,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:16,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:18,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:19,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:19,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:19,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 14:10:19,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:10:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 14:10:19,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:19,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:10:19,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:10:19,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 14:10:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:10:20,143 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:10:20,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:20,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:20,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:20,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:10:20,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:20,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:20,184 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 14:10:20,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105737448] [2020-10-13 14:10:20,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:20,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:10:20,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493460597] [2020-10-13 14:10:20,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:10:20,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:20,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:10:20,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:10:20,212 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 7 states. [2020-10-13 14:10:20,450 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 14:10:22,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:22,228 INFO L93 Difference]: Finished difference Result 839 states and 1352 transitions. [2020-10-13 14:10:22,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:10:22,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-13 14:10:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:22,251 INFO L225 Difference]: With dead ends: 839 [2020-10-13 14:10:22,251 INFO L226 Difference]: Without dead ends: 678 [2020-10-13 14:10:22,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:10:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-10-13 14:10:22,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 340. [2020-10-13 14:10:22,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 14:10:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 458 transitions. [2020-10-13 14:10:22,337 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 458 transitions. Word has length 50 [2020-10-13 14:10:22,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:22,337 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 458 transitions. [2020-10-13 14:10:22,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:10:22,338 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 458 transitions. [2020-10-13 14:10:22,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 14:10:22,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:22,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:22,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:10:22,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:22,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:22,342 INFO L82 PathProgramCache]: Analyzing trace with hash 414157740, now seen corresponding path program 1 times [2020-10-13 14:10:22,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:22,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50742216] [2020-10-13 14:10:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:22,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:22,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:22,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:26,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:27,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:27,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 14:10:27,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:10:27,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:10:27,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:10:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:10:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:10:27,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:10:27,676 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:10:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:27,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:27,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:27,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:27,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:27,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:10:27,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:27,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:10:27,744 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 14:10:27,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50742216] [2020-10-13 14:10:27,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:27,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:10:27,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890425661] [2020-10-13 14:10:27,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:10:27,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:27,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:10:27,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:10:27,754 INFO L87 Difference]: Start difference. First operand 340 states and 458 transitions. Second operand 9 states. [2020-10-13 14:10:27,987 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 14:10:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:29,600 INFO L93 Difference]: Finished difference Result 1010 states and 1476 transitions. [2020-10-13 14:10:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:10:29,601 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-13 14:10:29,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:29,608 INFO L225 Difference]: With dead ends: 1010 [2020-10-13 14:10:29,608 INFO L226 Difference]: Without dead ends: 870 [2020-10-13 14:10:29,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:10:29,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-10-13 14:10:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 339. [2020-10-13 14:10:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-13 14:10:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 455 transitions. [2020-10-13 14:10:29,678 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 455 transitions. Word has length 51 [2020-10-13 14:10:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:29,679 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 455 transitions. [2020-10-13 14:10:29,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:10:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 455 transitions. [2020-10-13 14:10:29,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 14:10:29,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:29,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:29,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:10:29,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:29,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:29,689 INFO L82 PathProgramCache]: Analyzing trace with hash 971590540, now seen corresponding path program 1 times [2020-10-13 14:10:29,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:29,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613735919] [2020-10-13 14:10:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:29,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:29,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:30,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:30,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:30,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:34,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:34,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 14:10:34,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:10:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:10:34,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:10:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:10:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:10:34,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:34,949 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:10:34,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:34,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:34,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:34,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:10:34,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:10:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:10:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:35,030 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 14:10:35,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613735919] [2020-10-13 14:10:35,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:35,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:10:35,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189468849] [2020-10-13 14:10:35,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:10:35,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:35,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:10:35,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:10:35,036 INFO L87 Difference]: Start difference. First operand 339 states and 455 transitions. Second operand 6 states. [2020-10-13 14:10:35,190 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 14:10:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:35,835 INFO L93 Difference]: Finished difference Result 796 states and 1105 transitions. [2020-10-13 14:10:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:10:35,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-13 14:10:35,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:35,839 INFO L225 Difference]: With dead ends: 796 [2020-10-13 14:10:35,840 INFO L226 Difference]: Without dead ends: 507 [2020-10-13 14:10:35,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:10:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-10-13 14:10:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 483. [2020-10-13 14:10:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-10-13 14:10:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 676 transitions. [2020-10-13 14:10:35,887 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 676 transitions. Word has length 51 [2020-10-13 14:10:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:35,887 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 676 transitions. [2020-10-13 14:10:35,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:10:35,896 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 676 transitions. [2020-10-13 14:10:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:10:35,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:35,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:35,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:10:35,898 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:35,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:35,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1859329898, now seen corresponding path program 1 times [2020-10-13 14:10:35,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:35,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069268526] [2020-10-13 14:10:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:35,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:36,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:36,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:40,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:40,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:40,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:10:40,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:10:40,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:10:40,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:10:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:10:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:10:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:41,156 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:10:41,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:41,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:41,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:41,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:41,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:10:41,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:41,187 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 14:10:41,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069268526] [2020-10-13 14:10:41,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:41,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:10:41,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856665350] [2020-10-13 14:10:41,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:10:41,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:41,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:10:41,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:10:41,190 INFO L87 Difference]: Start difference. First operand 483 states and 676 transitions. Second operand 10 states. [2020-10-13 14:10:41,357 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 14:10:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:42,275 INFO L93 Difference]: Finished difference Result 1281 states and 1879 transitions. [2020-10-13 14:10:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:10:42,275 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-13 14:10:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:42,288 INFO L225 Difference]: With dead ends: 1281 [2020-10-13 14:10:42,289 INFO L226 Difference]: Without dead ends: 1028 [2020-10-13 14:10:42,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:10:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2020-10-13 14:10:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 492. [2020-10-13 14:10:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-13 14:10:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 683 transitions. [2020-10-13 14:10:42,342 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 683 transitions. Word has length 52 [2020-10-13 14:10:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:42,343 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 683 transitions. [2020-10-13 14:10:42,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:10:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 683 transitions. [2020-10-13 14:10:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:10:42,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:42,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:42,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:10:42,346 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:42,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1301897098, now seen corresponding path program 1 times [2020-10-13 14:10:42,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:42,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194032580] [2020-10-13 14:10:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:42,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:46,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:46,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:47,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:47,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:10:47,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:10:47,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:10:47,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:10:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:10:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:10:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:47,550 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:10:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:47,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:47,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:47,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:47,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:47,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:10:47,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:10:47,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:47,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:10:47,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:10:47,591 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 14:10:47,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194032580] [2020-10-13 14:10:47,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:47,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:10:47,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600361020] [2020-10-13 14:10:47,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:10:47,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:47,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:10:47,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:10:47,594 INFO L87 Difference]: Start difference. First operand 492 states and 683 transitions. Second operand 6 states. [2020-10-13 14:10:47,741 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 14:10:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:48,365 INFO L93 Difference]: Finished difference Result 973 states and 1359 transitions. [2020-10-13 14:10:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:10:48,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 14:10:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:48,370 INFO L225 Difference]: With dead ends: 973 [2020-10-13 14:10:48,370 INFO L226 Difference]: Without dead ends: 689 [2020-10-13 14:10:48,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:10:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-10-13 14:10:48,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 580. [2020-10-13 14:10:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-10-13 14:10:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 814 transitions. [2020-10-13 14:10:48,415 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 814 transitions. Word has length 52 [2020-10-13 14:10:48,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:48,416 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 814 transitions. [2020-10-13 14:10:48,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:10:48,416 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 814 transitions. [2020-10-13 14:10:48,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:10:48,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:48,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:48,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:10:48,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:48,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:48,418 INFO L82 PathProgramCache]: Analyzing trace with hash 200188206, now seen corresponding path program 1 times [2020-10-13 14:10:48,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:48,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955619770] [2020-10-13 14:10:48,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:49,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:53,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:53,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:53,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:10:53,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:10:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:10:53,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:10:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:10:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:10:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:53,630 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:10:53,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:53,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:53,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:53,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:10:53,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:10:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:10:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:53,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955619770] [2020-10-13 14:10:53,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:53,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:10:53,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140024049] [2020-10-13 14:10:53,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:10:53,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:53,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:10:53,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:10:53,679 INFO L87 Difference]: Start difference. First operand 580 states and 814 transitions. Second operand 6 states. [2020-10-13 14:10:53,888 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 14:10:54,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:54,477 INFO L93 Difference]: Finished difference Result 948 states and 1346 transitions. [2020-10-13 14:10:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:10:54,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 14:10:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:54,481 INFO L225 Difference]: With dead ends: 948 [2020-10-13 14:10:54,481 INFO L226 Difference]: Without dead ends: 500 [2020-10-13 14:10:54,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:10:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-13 14:10:54,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 326. [2020-10-13 14:10:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-13 14:10:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 439 transitions. [2020-10-13 14:10:54,516 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 439 transitions. Word has length 52 [2020-10-13 14:10:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:54,518 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 439 transitions. [2020-10-13 14:10:54,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:10:54,519 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 439 transitions. [2020-10-13 14:10:54,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:10:54,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:54,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:10:54,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:10:54,521 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:54,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:54,521 INFO L82 PathProgramCache]: Analyzing trace with hash -2019662876, now seen corresponding path program 1 times [2020-10-13 14:10:54,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:54,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423262200] [2020-10-13 14:10:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:54,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:55,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:55,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:55,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:55,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:55,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:56,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:57,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:59,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:59,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:10:59,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 14:10:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:10:59,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:10:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:10:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:10:59,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:10:59,803 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:10:59,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:59,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:59,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:59,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:59,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:59,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:10:59,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:59,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:10:59,842 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 14:10:59,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423262200] [2020-10-13 14:10:59,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:59,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:10:59,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017428028] [2020-10-13 14:10:59,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:10:59,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:59,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:10:59,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:10:59,845 INFO L87 Difference]: Start difference. First operand 326 states and 439 transitions. Second operand 10 states. [2020-10-13 14:11:00,039 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 14:11:00,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:00,796 INFO L93 Difference]: Finished difference Result 728 states and 1016 transitions. [2020-10-13 14:11:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:11:00,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-13 14:11:00,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:00,801 INFO L225 Difference]: With dead ends: 728 [2020-10-13 14:11:00,801 INFO L226 Difference]: Without dead ends: 566 [2020-10-13 14:11:00,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:11:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-10-13 14:11:00,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 314. [2020-10-13 14:11:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 14:11:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 422 transitions. [2020-10-13 14:11:00,844 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 422 transitions. Word has length 53 [2020-10-13 14:11:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:00,845 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 422 transitions. [2020-10-13 14:11:00,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 422 transitions. [2020-10-13 14:11:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:11:00,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:00,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:00,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:11:00,847 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1462230076, now seen corresponding path program 1 times [2020-10-13 14:11:00,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:00,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742307775] [2020-10-13 14:11:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:01,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:03,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:03,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:05,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:05,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:11:05,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 14:11:05,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:11:05,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:05,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:05,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:11:05,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:11:05,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:06,215 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:06,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:06,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:06,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:06,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:06,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:06,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:11:06,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:06,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:06,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:06,238 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 14:11:06,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742307775] [2020-10-13 14:11:06,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:06,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:06,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697089519] [2020-10-13 14:11:06,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:06,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:06,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:06,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:06,241 INFO L87 Difference]: Start difference. First operand 314 states and 422 transitions. Second operand 11 states. [2020-10-13 14:11:06,766 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 160 [2020-10-13 14:11:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:08,272 INFO L93 Difference]: Finished difference Result 769 states and 1083 transitions. [2020-10-13 14:11:08,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 14:11:08,272 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-10-13 14:11:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:08,278 INFO L225 Difference]: With dead ends: 769 [2020-10-13 14:11:08,278 INFO L226 Difference]: Without dead ends: 764 [2020-10-13 14:11:08,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2020-10-13 14:11:08,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2020-10-13 14:11:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 314. [2020-10-13 14:11:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 14:11:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 421 transitions. [2020-10-13 14:11:08,318 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 421 transitions. Word has length 53 [2020-10-13 14:11:08,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:08,319 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 421 transitions. [2020-10-13 14:11:08,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:11:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 421 transitions. [2020-10-13 14:11:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:11:08,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:08,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:11:08,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:11:08,321 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:08,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:08,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1651604735, now seen corresponding path program 1 times [2020-10-13 14:11:08,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:08,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488657704] [2020-10-13 14:11:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:13,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:13,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:11:13,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 14:11:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:11:13,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:11:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:13,571 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:13,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:13,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:13,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:13,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:11:13,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:13,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:13,596 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 14:11:13,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488657704] [2020-10-13 14:11:13,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:13,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:13,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043267814] [2020-10-13 14:11:13,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:13,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:13,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:13,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:13,599 INFO L87 Difference]: Start difference. First operand 314 states and 421 transitions. Second operand 10 states. [2020-10-13 14:11:13,802 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:11:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:14,846 INFO L93 Difference]: Finished difference Result 598 states and 803 transitions. [2020-10-13 14:11:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 14:11:14,847 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-13 14:11:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:14,850 INFO L225 Difference]: With dead ends: 598 [2020-10-13 14:11:14,850 INFO L226 Difference]: Without dead ends: 594 [2020-10-13 14:11:14,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-13 14:11:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-13 14:11:14,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 323. [2020-10-13 14:11:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-13 14:11:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 435 transitions. [2020-10-13 14:11:14,885 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 435 transitions. Word has length 53 [2020-10-13 14:11:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:14,886 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 435 transitions. [2020-10-13 14:11:14,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 435 transitions. [2020-10-13 14:11:14,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:11:14,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:14,887 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 14:11:14,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:11:14,887 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:14,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:14,887 INFO L82 PathProgramCache]: Analyzing trace with hash 760828775, now seen corresponding path program 1 times [2020-10-13 14:11:14,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:14,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103399148] [2020-10-13 14:11:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:14,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:19,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:19,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:11:19,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:11:19,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:11:19,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:11:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:11:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:20,117 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:20,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:20,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:20,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:20,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:20,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:11:20,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:20,137 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 14:11:20,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103399148] [2020-10-13 14:11:20,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:20,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:20,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846828077] [2020-10-13 14:11:20,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:20,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:20,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:20,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:20,139 INFO L87 Difference]: Start difference. First operand 323 states and 435 transitions. Second operand 10 states. [2020-10-13 14:11:20,375 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 14:11:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:21,335 INFO L93 Difference]: Finished difference Result 674 states and 948 transitions. [2020-10-13 14:11:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 14:11:21,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-13 14:11:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:21,339 INFO L225 Difference]: With dead ends: 674 [2020-10-13 14:11:21,339 INFO L226 Difference]: Without dead ends: 661 [2020-10-13 14:11:21,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:11:21,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-13 14:11:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 323. [2020-10-13 14:11:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-13 14:11:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 434 transitions. [2020-10-13 14:11:21,377 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 434 transitions. Word has length 54 [2020-10-13 14:11:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:21,377 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 434 transitions. [2020-10-13 14:11:21,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 434 transitions. [2020-10-13 14:11:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:11:21,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:21,378 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 14:11:21,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:11:21,379 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:21,379 INFO L82 PathProgramCache]: Analyzing trace with hash 2116434766, now seen corresponding path program 1 times [2020-10-13 14:11:21,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:21,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632873900] [2020-10-13 14:11:21,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:21,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:21,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:21,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:26,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:26,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:11:26,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:11:26,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4648 [2020-10-13 14:11:26,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:26,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:26,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:26,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:11:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:26,268 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:26,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:26,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:26,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:26,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:26,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:26,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:26,297 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 14:11:26,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632873900] [2020-10-13 14:11:26,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:26,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:26,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965382742] [2020-10-13 14:11:26,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:26,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:26,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:26,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:26,299 INFO L87 Difference]: Start difference. First operand 323 states and 434 transitions. Second operand 10 states. [2020-10-13 14:11:26,498 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:11:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:27,324 INFO L93 Difference]: Finished difference Result 971 states and 1359 transitions. [2020-10-13 14:11:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:11:27,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-13 14:11:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:27,329 INFO L225 Difference]: With dead ends: 971 [2020-10-13 14:11:27,329 INFO L226 Difference]: Without dead ends: 965 [2020-10-13 14:11:27,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:11:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-10-13 14:11:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 335. [2020-10-13 14:11:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-13 14:11:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 450 transitions. [2020-10-13 14:11:27,370 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 450 transitions. Word has length 54 [2020-10-13 14:11:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:27,370 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 450 transitions. [2020-10-13 14:11:27,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 450 transitions. [2020-10-13 14:11:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:11:27,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:27,371 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 14:11:27,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:11:27,372 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:27,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1601774495, now seen corresponding path program 1 times [2020-10-13 14:11:27,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:27,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409115311] [2020-10-13 14:11:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:27,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:27,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:27,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:32,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:32,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:11:32,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:11:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:11:32,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:11:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:11:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:32,648 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:32,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:32,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:32,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:32,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:32,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:11:32,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:32,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:32,665 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 14:11:32,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409115311] [2020-10-13 14:11:32,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:32,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:32,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248641458] [2020-10-13 14:11:32,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:32,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:32,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:32,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:32,668 INFO L87 Difference]: Start difference. First operand 335 states and 450 transitions. Second operand 11 states. [2020-10-13 14:11:32,859 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 14:11:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:34,080 INFO L93 Difference]: Finished difference Result 764 states and 1050 transitions. [2020-10-13 14:11:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 14:11:34,081 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-13 14:11:34,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:34,085 INFO L225 Difference]: With dead ends: 764 [2020-10-13 14:11:34,085 INFO L226 Difference]: Without dead ends: 757 [2020-10-13 14:11:34,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2020-10-13 14:11:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-10-13 14:11:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 335. [2020-10-13 14:11:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-13 14:11:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 448 transitions. [2020-10-13 14:11:34,127 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 448 transitions. Word has length 54 [2020-10-13 14:11:34,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:34,127 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 448 transitions. [2020-10-13 14:11:34,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:11:34,127 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 448 transitions. [2020-10-13 14:11:34,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:11:34,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:34,128 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 14:11:34,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:11:34,128 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:34,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:34,129 INFO L82 PathProgramCache]: Analyzing trace with hash -392381215, now seen corresponding path program 1 times [2020-10-13 14:11:34,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:34,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620159881] [2020-10-13 14:11:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:34,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:34,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:34,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:34,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:35,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:37,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:37,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:39,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:39,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:11:39,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 14:11:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:11:39,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:11:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:39,358 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:39,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:39,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:39,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:39,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:39,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:39,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:39,373 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 14:11:39,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620159881] [2020-10-13 14:11:39,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:39,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:39,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645480778] [2020-10-13 14:11:39,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:39,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:39,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:39,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:39,375 INFO L87 Difference]: Start difference. First operand 335 states and 448 transitions. Second operand 10 states. [2020-10-13 14:11:39,522 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 14:11:40,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:40,230 INFO L93 Difference]: Finished difference Result 737 states and 1025 transitions. [2020-10-13 14:11:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:11:40,230 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-13 14:11:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:40,233 INFO L225 Difference]: With dead ends: 737 [2020-10-13 14:11:40,233 INFO L226 Difference]: Without dead ends: 580 [2020-10-13 14:11:40,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:11:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-13 14:11:40,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 334. [2020-10-13 14:11:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-13 14:11:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 446 transitions. [2020-10-13 14:11:40,274 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 446 transitions. Word has length 55 [2020-10-13 14:11:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:40,274 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 446 transitions. [2020-10-13 14:11:40,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:40,274 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 446 transitions. [2020-10-13 14:11:40,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:11:40,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:40,275 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 14:11:40,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:11:40,275 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:40,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:40,276 INFO L82 PathProgramCache]: Analyzing trace with hash -836854007, now seen corresponding path program 1 times [2020-10-13 14:11:40,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:40,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815132091] [2020-10-13 14:11:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:40,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:40,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:40,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:40,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:41,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:42,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:42,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:11:42,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:11:42,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1817 [2020-10-13 14:11:42,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:11:42,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:11:42,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:42,353 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:42,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:42,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:42,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:42,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:42,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:11:42,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:42,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:42,372 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 14:11:42,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815132091] [2020-10-13 14:11:42,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:42,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:42,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842548209] [2020-10-13 14:11:42,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:42,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:42,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:42,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:42,373 INFO L87 Difference]: Start difference. First operand 334 states and 446 transitions. Second operand 11 states. [2020-10-13 14:11:42,534 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 14:11:43,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:43,314 INFO L93 Difference]: Finished difference Result 580 states and 786 transitions. [2020-10-13 14:11:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:11:43,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-13 14:11:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:43,318 INFO L225 Difference]: With dead ends: 580 [2020-10-13 14:11:43,318 INFO L226 Difference]: Without dead ends: 574 [2020-10-13 14:11:43,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:11:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-13 14:11:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 334. [2020-10-13 14:11:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-13 14:11:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 445 transitions. [2020-10-13 14:11:43,357 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 445 transitions. Word has length 55 [2020-10-13 14:11:43,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:43,357 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 445 transitions. [2020-10-13 14:11:43,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:11:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 445 transitions. [2020-10-13 14:11:43,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:11:43,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:43,358 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 14:11:43,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:11:43,358 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:43,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:43,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1287156098, now seen corresponding path program 1 times [2020-10-13 14:11:43,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:43,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842065858] [2020-10-13 14:11:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:43,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:46,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:46,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:11:46,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:11:46,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2913 [2020-10-13 14:11:46,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:11:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:11:46,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:46,520 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:46,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:46,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:46,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:46,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:46,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:46,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:46,538 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 14:11:46,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842065858] [2020-10-13 14:11:46,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:46,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:46,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623177994] [2020-10-13 14:11:46,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:46,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:46,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:46,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:46,540 INFO L87 Difference]: Start difference. First operand 334 states and 445 transitions. Second operand 11 states. [2020-10-13 14:11:46,702 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 14:11:47,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:47,993 INFO L93 Difference]: Finished difference Result 677 states and 921 transitions. [2020-10-13 14:11:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:11:47,993 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-13 14:11:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:47,997 INFO L225 Difference]: With dead ends: 677 [2020-10-13 14:11:47,997 INFO L226 Difference]: Without dead ends: 673 [2020-10-13 14:11:47,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:11:47,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2020-10-13 14:11:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 326. [2020-10-13 14:11:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-13 14:11:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 436 transitions. [2020-10-13 14:11:48,028 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 436 transitions. Word has length 55 [2020-10-13 14:11:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:48,029 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 436 transitions. [2020-10-13 14:11:48,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:11:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 436 transitions. [2020-10-13 14:11:48,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:11:48,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:48,030 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 14:11:48,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:11:48,030 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:48,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:48,031 INFO L82 PathProgramCache]: Analyzing trace with hash 882855599, now seen corresponding path program 1 times [2020-10-13 14:11:48,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:48,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946210497] [2020-10-13 14:11:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:50,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:11:50,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:11:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2016 [2020-10-13 14:11:50,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:11:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:11:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 14:11:50,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:50,247 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:50,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:50,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:50,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:50,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:50,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:50,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:50,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:50,265 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 14:11:50,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946210497] [2020-10-13 14:11:50,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:50,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:11:50,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156440152] [2020-10-13 14:11:50,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:11:50,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:50,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:11:50,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:11:50,267 INFO L87 Difference]: Start difference. First operand 326 states and 436 transitions. Second operand 8 states. [2020-10-13 14:11:50,434 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-13 14:11:50,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:50,954 INFO L93 Difference]: Finished difference Result 518 states and 708 transitions. [2020-10-13 14:11:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:11:50,954 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-13 14:11:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:50,957 INFO L225 Difference]: With dead ends: 518 [2020-10-13 14:11:50,957 INFO L226 Difference]: Without dead ends: 490 [2020-10-13 14:11:50,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:11:50,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-13 14:11:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 298. [2020-10-13 14:11:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-13 14:11:51,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 405 transitions. [2020-10-13 14:11:51,017 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 405 transitions. Word has length 56 [2020-10-13 14:11:51,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:51,018 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 405 transitions. [2020-10-13 14:11:51,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:11:51,018 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 405 transitions. [2020-10-13 14:11:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:11:51,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:51,019 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 14:11:51,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:11:51,019 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:51,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1271259923, now seen corresponding path program 1 times [2020-10-13 14:11:51,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:51,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050710737] [2020-10-13 14:11:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:51,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:51,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:51,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:51,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:51,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:11:51,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:11:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 959 [2020-10-13 14:11:51,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:11:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:11:51,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:52,223 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:52,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:52,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:52,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:52,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:52,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:52,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:52,241 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 14:11:52,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050710737] [2020-10-13 14:11:52,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:52,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:52,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530215203] [2020-10-13 14:11:52,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:52,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:52,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:52,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:52,243 INFO L87 Difference]: Start difference. First operand 298 states and 405 transitions. Second operand 11 states. [2020-10-13 14:11:52,427 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:11:53,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:53,414 INFO L93 Difference]: Finished difference Result 837 states and 1191 transitions. [2020-10-13 14:11:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:11:53,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-13 14:11:53,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:53,417 INFO L225 Difference]: With dead ends: 837 [2020-10-13 14:11:53,417 INFO L226 Difference]: Without dead ends: 663 [2020-10-13 14:11:53,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:11:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-10-13 14:11:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 298. [2020-10-13 14:11:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-13 14:11:53,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 404 transitions. [2020-10-13 14:11:53,452 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 404 transitions. Word has length 56 [2020-10-13 14:11:53,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:53,452 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 404 transitions. [2020-10-13 14:11:53,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:11:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 404 transitions. [2020-10-13 14:11:53,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:11:53,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:53,453 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 14:11:53,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:11:53,453 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:53,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1835171591, now seen corresponding path program 1 times [2020-10-13 14:11:53,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:53,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909610331] [2020-10-13 14:11:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:53,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:53,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:54,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:54,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:11:54,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:11:54,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1162 [2020-10-13 14:11:54,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:54,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:54,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:11:54,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:11:54,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:54,870 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:54,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:54,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:54,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:54,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:54,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:54,888 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 14:11:54,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909610331] [2020-10-13 14:11:54,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:54,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:54,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44465978] [2020-10-13 14:11:54,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:54,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:54,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:54,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:54,890 INFO L87 Difference]: Start difference. First operand 298 states and 404 transitions. Second operand 11 states. [2020-10-13 14:11:55,077 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-13 14:11:55,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:55,704 INFO L93 Difference]: Finished difference Result 554 states and 755 transitions. [2020-10-13 14:11:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:11:55,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-13 14:11:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:55,707 INFO L225 Difference]: With dead ends: 554 [2020-10-13 14:11:55,707 INFO L226 Difference]: Without dead ends: 546 [2020-10-13 14:11:55,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:11:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-10-13 14:11:55,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 301. [2020-10-13 14:11:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-13 14:11:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 407 transitions. [2020-10-13 14:11:55,743 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 407 transitions. Word has length 56 [2020-10-13 14:11:55,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:55,743 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 407 transitions. [2020-10-13 14:11:55,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:11:55,743 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 407 transitions. [2020-10-13 14:11:55,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:11:55,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:55,744 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 14:11:55,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:11:55,745 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:55,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:55,745 INFO L82 PathProgramCache]: Analyzing trace with hash -628742094, now seen corresponding path program 1 times [2020-10-13 14:11:55,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:55,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071211048] [2020-10-13 14:11:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:55,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:55,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:57,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:57,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:11:57,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:11:57,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-13 14:11:57,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:57,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:11:57,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:11:57,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:11:57,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:57,306 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:57,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:57,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:57,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:57,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:57,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:11:57,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:57,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:57,323 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 14:11:57,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071211048] [2020-10-13 14:11:57,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:57,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:11:57,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284742402] [2020-10-13 14:11:57,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:11:57,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:57,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:11:57,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:11:57,325 INFO L87 Difference]: Start difference. First operand 301 states and 407 transitions. Second operand 8 states. [2020-10-13 14:11:57,498 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:11:58,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:58,060 INFO L93 Difference]: Finished difference Result 582 states and 812 transitions. [2020-10-13 14:11:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:11:58,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-13 14:11:58,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:58,062 INFO L225 Difference]: With dead ends: 582 [2020-10-13 14:11:58,062 INFO L226 Difference]: Without dead ends: 403 [2020-10-13 14:11:58,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:11:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-13 14:11:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 301. [2020-10-13 14:11:58,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-13 14:11:58,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 405 transitions. [2020-10-13 14:11:58,097 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 405 transitions. Word has length 57 [2020-10-13 14:11:58,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:58,098 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 405 transitions. [2020-10-13 14:11:58,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:11:58,098 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 405 transitions. [2020-10-13 14:11:58,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:11:58,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:58,099 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 14:11:58,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:11:58,099 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:58,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:58,099 INFO L82 PathProgramCache]: Analyzing trace with hash -673415167, now seen corresponding path program 1 times [2020-10-13 14:11:58,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:58,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016647814] [2020-10-13 14:11:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:58,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:59,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:59,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:11:59,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:11:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1780 [2020-10-13 14:11:59,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:11:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:11:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:11:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:00,059 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:00,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:00,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:00,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:00,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:00,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:00,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:00,075 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 14:12:00,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016647814] [2020-10-13 14:12:00,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:00,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:12:00,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987100770] [2020-10-13 14:12:00,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:12:00,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:00,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:12:00,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:00,077 INFO L87 Difference]: Start difference. First operand 301 states and 405 transitions. Second operand 7 states. [2020-10-13 14:12:00,236 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-13 14:12:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:00,751 INFO L93 Difference]: Finished difference Result 672 states and 936 transitions. [2020-10-13 14:12:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:12:00,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-13 14:12:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:00,754 INFO L225 Difference]: With dead ends: 672 [2020-10-13 14:12:00,754 INFO L226 Difference]: Without dead ends: 473 [2020-10-13 14:12:00,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:00,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-10-13 14:12:00,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 281. [2020-10-13 14:12:00,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-13 14:12:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 378 transitions. [2020-10-13 14:12:00,790 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 378 transitions. Word has length 57 [2020-10-13 14:12:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:00,791 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 378 transitions. [2020-10-13 14:12:00,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:12:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 378 transitions. [2020-10-13 14:12:00,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:12:00,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:00,791 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 14:12:00,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:12:00,791 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:00,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:00,792 INFO L82 PathProgramCache]: Analyzing trace with hash -548300718, now seen corresponding path program 1 times [2020-10-13 14:12:00,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:00,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230923910] [2020-10-13 14:12:00,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:00,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:00,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:01,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:01,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:01,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:12:01,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:12:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-13 14:12:01,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:12:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:12:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:12:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:01,816 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:01,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:01,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:01,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:01,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:12:01,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:01,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:12:01,849 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 14:12:01,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230923910] [2020-10-13 14:12:01,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:01,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:12:01,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329138134] [2020-10-13 14:12:01,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:12:01,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:01,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:12:01,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:12:01,854 INFO L87 Difference]: Start difference. First operand 281 states and 378 transitions. Second operand 12 states. [2020-10-13 14:12:02,018 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 14:12:03,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:03,193 INFO L93 Difference]: Finished difference Result 689 states and 976 transitions. [2020-10-13 14:12:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:12:03,194 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-13 14:12:03,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:03,197 INFO L225 Difference]: With dead ends: 689 [2020-10-13 14:12:03,197 INFO L226 Difference]: Without dead ends: 683 [2020-10-13 14:12:03,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:12:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-13 14:12:03,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 281. [2020-10-13 14:12:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-13 14:12:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 376 transitions. [2020-10-13 14:12:03,235 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 376 transitions. Word has length 58 [2020-10-13 14:12:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:03,235 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 376 transitions. [2020-10-13 14:12:03,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:12:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 376 transitions. [2020-10-13 14:12:03,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:12:03,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:03,236 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 14:12:03,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:12:03,236 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:03,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:03,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1824557352, now seen corresponding path program 1 times [2020-10-13 14:12:03,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:03,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077937563] [2020-10-13 14:12:03,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:03,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:04,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:04,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:12:04,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:12:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-10-13 14:12:04,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:12:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:12:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:12:04,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:04,463 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:04,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:04,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:04,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:04,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:04,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:04,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:04,480 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 14:12:04,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077937563] [2020-10-13 14:12:04,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:04,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:12:04,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76140014] [2020-10-13 14:12:04,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:12:04,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:04,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:12:04,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:04,481 INFO L87 Difference]: Start difference. First operand 281 states and 376 transitions. Second operand 11 states. [2020-10-13 14:12:04,631 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 14:12:05,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:05,386 INFO L93 Difference]: Finished difference Result 379 states and 513 transitions. [2020-10-13 14:12:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:05,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-13 14:12:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:05,390 INFO L225 Difference]: With dead ends: 379 [2020-10-13 14:12:05,390 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 14:12:05,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:12:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 14:12:05,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 281. [2020-10-13 14:12:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-13 14:12:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 375 transitions. [2020-10-13 14:12:05,424 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 375 transitions. Word has length 58 [2020-10-13 14:12:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:05,425 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 375 transitions. [2020-10-13 14:12:05,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 375 transitions. [2020-10-13 14:12:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:12:05,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:05,425 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 14:12:05,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:12:05,426 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:05,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:05,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1454752989, now seen corresponding path program 1 times [2020-10-13 14:12:05,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:05,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642732060] [2020-10-13 14:12:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:05,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:05,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:12:05,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 14:12:05,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:12:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 14:12:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:05,754 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:05,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:05,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:05,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:05,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:05,772 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 14:12:05,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642732060] [2020-10-13 14:12:05,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:05,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:12:05,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369054293] [2020-10-13 14:12:05,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:12:05,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:05,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:12:05,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:12:05,773 INFO L87 Difference]: Start difference. First operand 281 states and 375 transitions. Second operand 9 states. [2020-10-13 14:12:05,931 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 14:12:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:06,608 INFO L93 Difference]: Finished difference Result 367 states and 500 transitions. [2020-10-13 14:12:06,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:12:06,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-13 14:12:06,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:06,610 INFO L225 Difference]: With dead ends: 367 [2020-10-13 14:12:06,610 INFO L226 Difference]: Without dead ends: 355 [2020-10-13 14:12:06,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:12:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-13 14:12:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 269. [2020-10-13 14:12:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-13 14:12:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 362 transitions. [2020-10-13 14:12:06,658 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 362 transitions. Word has length 59 [2020-10-13 14:12:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:06,659 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 362 transitions. [2020-10-13 14:12:06,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:12:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 362 transitions. [2020-10-13 14:12:06,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:12:06,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:06,660 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 14:12:06,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:12:06,660 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:06,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:06,660 INFO L82 PathProgramCache]: Analyzing trace with hash -591779502, now seen corresponding path program 1 times [2020-10-13 14:12:06,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:06,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865264856] [2020-10-13 14:12:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:06,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:06,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:12:06,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:06,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 14:12:06,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:12:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:12:06,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:07,094 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:07,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:07,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:07,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:07,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:07,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:12:07,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:07,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:07,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:07,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:07,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:12:07,137 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 14:12:07,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865264856] [2020-10-13 14:12:07,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:07,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:12:07,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556220367] [2020-10-13 14:12:07,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:12:07,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:07,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:12:07,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:12:07,139 INFO L87 Difference]: Start difference. First operand 269 states and 362 transitions. Second operand 9 states. [2020-10-13 14:12:07,385 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:12:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:08,155 INFO L93 Difference]: Finished difference Result 348 states and 480 transitions. [2020-10-13 14:12:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:12:08,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-13 14:12:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:08,157 INFO L225 Difference]: With dead ends: 348 [2020-10-13 14:12:08,157 INFO L226 Difference]: Without dead ends: 342 [2020-10-13 14:12:08,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:12:08,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-13 14:12:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 263. [2020-10-13 14:12:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 14:12:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 355 transitions. [2020-10-13 14:12:08,193 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 355 transitions. Word has length 59 [2020-10-13 14:12:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:08,193 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 355 transitions. [2020-10-13 14:12:08,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:12:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 355 transitions. [2020-10-13 14:12:08,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 14:12:08,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:08,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:08,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:12:08,195 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:08,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:08,195 INFO L82 PathProgramCache]: Analyzing trace with hash -394206342, now seen corresponding path program 1 times [2020-10-13 14:12:08,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:08,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244771712] [2020-10-13 14:12:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:08,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:08,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:11,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:11,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:13,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:13,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 14:12:13,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:12:13,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:12:13,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 14:12:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:12:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:13,386 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:13,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:13,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:13,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:13,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:13,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:12:13,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:13,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:13,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244771712] [2020-10-13 14:12:13,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:13,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:13,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066643645] [2020-10-13 14:12:13,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:13,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:13,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:13,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:13,413 INFO L87 Difference]: Start difference. First operand 263 states and 355 transitions. Second operand 4 states. [2020-10-13 14:12:13,563 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 14:12:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:14,020 INFO L93 Difference]: Finished difference Result 559 states and 801 transitions. [2020-10-13 14:12:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:14,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-13 14:12:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:14,023 INFO L225 Difference]: With dead ends: 559 [2020-10-13 14:12:14,023 INFO L226 Difference]: Without dead ends: 403 [2020-10-13 14:12:14,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-13 14:12:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 389. [2020-10-13 14:12:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-13 14:12:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 545 transitions. [2020-10-13 14:12:14,086 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 545 transitions. Word has length 76 [2020-10-13 14:12:14,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:14,087 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 545 transitions. [2020-10-13 14:12:14,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:14,087 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 545 transitions. [2020-10-13 14:12:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 14:12:14,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:14,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:14,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 14:12:14,089 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:14,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1990327094, now seen corresponding path program 1 times [2020-10-13 14:12:14,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:14,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032728034] [2020-10-13 14:12:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:14,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:16,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:18,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:18,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:18,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:19,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 14:12:19,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:12:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:12:19,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 14:12:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:12:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:19,238 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:19,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:19,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:19,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:19,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 14:12:19,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:19,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:19,257 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 14:12:19,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032728034] [2020-10-13 14:12:19,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:19,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:19,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512581733] [2020-10-13 14:12:19,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:19,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:19,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:19,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:19,259 INFO L87 Difference]: Start difference. First operand 389 states and 545 transitions. Second operand 4 states. [2020-10-13 14:12:19,394 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 14:12:19,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:19,796 INFO L93 Difference]: Finished difference Result 953 states and 1399 transitions. [2020-10-13 14:12:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:19,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-13 14:12:19,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:19,799 INFO L225 Difference]: With dead ends: 953 [2020-10-13 14:12:19,799 INFO L226 Difference]: Without dead ends: 671 [2020-10-13 14:12:19,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:19,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-10-13 14:12:19,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 669. [2020-10-13 14:12:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-10-13 14:12:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 955 transitions. [2020-10-13 14:12:19,910 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 955 transitions. Word has length 77 [2020-10-13 14:12:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:19,910 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 955 transitions. [2020-10-13 14:12:19,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 955 transitions. [2020-10-13 14:12:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 14:12:19,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:19,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:19,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 14:12:19,911 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:19,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:19,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1019671443, now seen corresponding path program 1 times [2020-10-13 14:12:19,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:19,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463076331] [2020-10-13 14:12:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:22,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:23,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:24,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 14:12:24,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:12:24,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:12:24,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:24,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:24,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 14:12:24,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:12:24,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:25,078 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:25,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:25,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:25,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:25,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:25,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:25,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:25,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:25,100 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 14:12:25,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463076331] [2020-10-13 14:12:25,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:25,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:25,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600779082] [2020-10-13 14:12:25,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:25,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:25,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:25,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:25,101 INFO L87 Difference]: Start difference. First operand 669 states and 955 transitions. Second operand 4 states. [2020-10-13 14:12:25,252 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 14:12:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:25,812 INFO L93 Difference]: Finished difference Result 1729 states and 2517 transitions. [2020-10-13 14:12:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:25,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-13 14:12:25,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:25,817 INFO L225 Difference]: With dead ends: 1729 [2020-10-13 14:12:25,818 INFO L226 Difference]: Without dead ends: 1167 [2020-10-13 14:12:25,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-10-13 14:12:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1117. [2020-10-13 14:12:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2020-10-13 14:12:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1615 transitions. [2020-10-13 14:12:26,029 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1615 transitions. Word has length 79 [2020-10-13 14:12:26,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:26,029 INFO L479 AbstractCegarLoop]: Abstraction has 1117 states and 1615 transitions. [2020-10-13 14:12:26,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:26,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1615 transitions. [2020-10-13 14:12:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 14:12:26,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:26,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:26,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 14:12:26,031 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:26,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:26,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1450681674, now seen corresponding path program 1 times [2020-10-13 14:12:26,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:26,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276364879] [2020-10-13 14:12:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:26,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:28,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:30,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:31,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 14:12:31,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:12:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:12:31,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:31,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:12:31,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 14:12:31,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:12:31,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:31,183 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:31,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:31,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:31,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:31,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:31,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:31,201 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 14:12:31,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276364879] [2020-10-13 14:12:31,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:31,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:12:31,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579511172] [2020-10-13 14:12:31,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:12:31,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:31,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:12:31,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:31,203 INFO L87 Difference]: Start difference. First operand 1117 states and 1615 transitions. Second operand 5 states. [2020-10-13 14:12:31,338 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 14:12:31,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:31,946 INFO L93 Difference]: Finished difference Result 2593 states and 3821 transitions. [2020-10-13 14:12:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:12:31,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 14:12:31,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:31,952 INFO L225 Difference]: With dead ends: 2593 [2020-10-13 14:12:31,952 INFO L226 Difference]: Without dead ends: 1583 [2020-10-13 14:12:31,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-10-13 14:12:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1085. [2020-10-13 14:12:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-10-13 14:12:32,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1578 transitions. [2020-10-13 14:12:32,245 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1578 transitions. Word has length 80 [2020-10-13 14:12:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:32,245 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1578 transitions. [2020-10-13 14:12:32,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:12:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1578 transitions. [2020-10-13 14:12:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 14:12:32,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:32,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:32,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 14:12:32,247 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:32,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:32,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1578766981, now seen corresponding path program 1 times [2020-10-13 14:12:32,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:32,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235487071] [2020-10-13 14:12:32,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:34,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:34,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 14:12:34,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:12:34,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2523 [2020-10-13 14:12:34,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 14:12:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:12:34,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:34,924 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:34,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:34,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:34,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:34,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:34,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:34,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:34,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:34,942 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 14:12:34,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235487071] [2020-10-13 14:12:34,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:34,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:34,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483331205] [2020-10-13 14:12:34,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:34,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:34,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:34,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:34,943 INFO L87 Difference]: Start difference. First operand 1085 states and 1578 transitions. Second operand 4 states. [2020-10-13 14:12:35,080 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 14:12:35,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:35,674 INFO L93 Difference]: Finished difference Result 2097 states and 3076 transitions. [2020-10-13 14:12:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:35,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-13 14:12:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:35,679 INFO L225 Difference]: With dead ends: 2097 [2020-10-13 14:12:35,680 INFO L226 Difference]: Without dead ends: 1087 [2020-10-13 14:12:35,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:35,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-10-13 14:12:35,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1085. [2020-10-13 14:12:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-10-13 14:12:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1562 transitions. [2020-10-13 14:12:35,935 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1562 transitions. Word has length 80 [2020-10-13 14:12:35,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:35,935 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1562 transitions. [2020-10-13 14:12:35,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:35,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1562 transitions. [2020-10-13 14:12:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 14:12:35,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:35,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:35,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 14:12:35,937 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:35,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:35,937 INFO L82 PathProgramCache]: Analyzing trace with hash 868579332, now seen corresponding path program 1 times [2020-10-13 14:12:35,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:35,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919978463] [2020-10-13 14:12:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:35,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:38,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:38,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 14:12:38,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:12:38,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3005 [2020-10-13 14:12:38,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 14:12:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:12:38,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:39,088 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:39,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:39,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:39,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:39,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:39,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919978463] [2020-10-13 14:12:39,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:39,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:39,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042601853] [2020-10-13 14:12:39,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:39,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:39,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:39,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:39,106 INFO L87 Difference]: Start difference. First operand 1085 states and 1562 transitions. Second operand 4 states. [2020-10-13 14:12:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:39,923 INFO L93 Difference]: Finished difference Result 2897 states and 4172 transitions. [2020-10-13 14:12:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:12:39,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-13 14:12:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:39,930 INFO L225 Difference]: With dead ends: 2897 [2020-10-13 14:12:39,930 INFO L226 Difference]: Without dead ends: 1887 [2020-10-13 14:12:39,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2020-10-13 14:12:40,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1821. [2020-10-13 14:12:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2020-10-13 14:12:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2530 transitions. [2020-10-13 14:12:40,358 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2530 transitions. Word has length 80 [2020-10-13 14:12:40,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:40,358 INFO L479 AbstractCegarLoop]: Abstraction has 1821 states and 2530 transitions. [2020-10-13 14:12:40,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2530 transitions. [2020-10-13 14:12:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 14:12:40,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:40,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:40,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 14:12:40,360 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:40,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1637968547, now seen corresponding path program 1 times [2020-10-13 14:12:40,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:40,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379873947] [2020-10-13 14:12:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:41,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:41,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 14:12:41,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:12:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1358 [2020-10-13 14:12:41,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:12:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 14:12:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 14:12:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:41,897 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:41,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:41,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:41,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:41,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:41,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:41,917 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 14:12:41,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379873947] [2020-10-13 14:12:41,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:41,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:12:41,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533510397] [2020-10-13 14:12:41,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:12:41,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:41,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:12:41,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:12:41,919 INFO L87 Difference]: Start difference. First operand 1821 states and 2530 transitions. Second operand 6 states. [2020-10-13 14:12:43,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:43,182 INFO L93 Difference]: Finished difference Result 3237 states and 4468 transitions. [2020-10-13 14:12:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 14:12:43,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-13 14:12:43,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:43,193 INFO L225 Difference]: With dead ends: 3237 [2020-10-13 14:12:43,193 INFO L226 Difference]: Without dead ends: 3235 [2020-10-13 14:12:43,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:12:43,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2020-10-13 14:12:43,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 1869. [2020-10-13 14:12:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2020-10-13 14:12:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2562 transitions. [2020-10-13 14:12:43,724 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2562 transitions. Word has length 81 [2020-10-13 14:12:43,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:43,724 INFO L479 AbstractCegarLoop]: Abstraction has 1869 states and 2562 transitions. [2020-10-13 14:12:43,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:12:43,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2562 transitions. [2020-10-13 14:12:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 14:12:43,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:43,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:43,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 14:12:43,726 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:43,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:43,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1543048551, now seen corresponding path program 1 times [2020-10-13 14:12:43,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:43,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788796625] [2020-10-13 14:12:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:43,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:45,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:45,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 14:12:45,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:12:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1921 [2020-10-13 14:12:45,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 14:12:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:12:45,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:45,799 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:45,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:45,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:45,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:45,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:45,821 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 14:12:45,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788796625] [2020-10-13 14:12:45,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:45,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:45,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204442543] [2020-10-13 14:12:45,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:45,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:45,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:45,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:45,823 INFO L87 Difference]: Start difference. First operand 1869 states and 2562 transitions. Second operand 4 states. [2020-10-13 14:12:45,968 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 14:12:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:46,884 INFO L93 Difference]: Finished difference Result 4313 states and 5956 transitions. [2020-10-13 14:12:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:46,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-13 14:12:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:46,895 INFO L225 Difference]: With dead ends: 4313 [2020-10-13 14:12:46,896 INFO L226 Difference]: Without dead ends: 2519 [2020-10-13 14:12:46,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:46,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2020-10-13 14:12:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2485. [2020-10-13 14:12:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2485 states. [2020-10-13 14:12:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3362 transitions. [2020-10-13 14:12:47,553 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3362 transitions. Word has length 81 [2020-10-13 14:12:47,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:47,553 INFO L479 AbstractCegarLoop]: Abstraction has 2485 states and 3362 transitions. [2020-10-13 14:12:47,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3362 transitions. [2020-10-13 14:12:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 14:12:47,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:47,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:47,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 14:12:47,555 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:47,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1293213142, now seen corresponding path program 1 times [2020-10-13 14:12:47,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:47,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708876791] [2020-10-13 14:12:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:47,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:51,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:52,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:52,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 14:12:52,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:12:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:12:52,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:52,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:52,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 14:12:52,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:12:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:52,734 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:52,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:52,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:52,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:52,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:52,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:52,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:52,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:52,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:52,753 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 14:12:52,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708876791] [2020-10-13 14:12:52,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:52,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:52,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405100091] [2020-10-13 14:12:52,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:52,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:52,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:52,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:52,754 INFO L87 Difference]: Start difference. First operand 2485 states and 3362 transitions. Second operand 4 states. [2020-10-13 14:12:52,900 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 14:12:54,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:54,179 INFO L93 Difference]: Finished difference Result 5961 states and 8064 transitions. [2020-10-13 14:12:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:54,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-13 14:12:54,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:54,191 INFO L225 Difference]: With dead ends: 5961 [2020-10-13 14:12:54,191 INFO L226 Difference]: Without dead ends: 3551 [2020-10-13 14:12:54,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:54,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2020-10-13 14:12:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3269. [2020-10-13 14:12:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3269 states. [2020-10-13 14:12:55,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4342 transitions. [2020-10-13 14:12:55,016 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4342 transitions. Word has length 81 [2020-10-13 14:12:55,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:55,017 INFO L479 AbstractCegarLoop]: Abstraction has 3269 states and 4342 transitions. [2020-10-13 14:12:55,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:55,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4342 transitions. [2020-10-13 14:12:55,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 14:12:55,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:55,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:55,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 14:12:55,019 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:55,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:55,020 INFO L82 PathProgramCache]: Analyzing trace with hash -367256601, now seen corresponding path program 1 times [2020-10-13 14:12:55,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:55,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618454494] [2020-10-13 14:12:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:55,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:58,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:59,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:00,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:00,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 14:13:00,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 14:13:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:13:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-13 14:13:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:13:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:00,195 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:00,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:00,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:00,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:00,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:00,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:00,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:00,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:00,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618454494] [2020-10-13 14:13:00,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:00,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:13:00,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746755730] [2020-10-13 14:13:00,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:13:00,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:00,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:13:00,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:00,216 INFO L87 Difference]: Start difference. First operand 3269 states and 4342 transitions. Second operand 4 states. [2020-10-13 14:13:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:01,397 INFO L93 Difference]: Finished difference Result 6465 states and 8604 transitions. [2020-10-13 14:13:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:13:01,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-13 14:13:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:01,404 INFO L225 Difference]: With dead ends: 6465 [2020-10-13 14:13:01,405 INFO L226 Difference]: Without dead ends: 3271 [2020-10-13 14:13:01,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2020-10-13 14:13:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3189. [2020-10-13 14:13:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3189 states. [2020-10-13 14:13:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 4166 transitions. [2020-10-13 14:13:02,200 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 4166 transitions. Word has length 101 [2020-10-13 14:13:02,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:02,200 INFO L479 AbstractCegarLoop]: Abstraction has 3189 states and 4166 transitions. [2020-10-13 14:13:02,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:13:02,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 4166 transitions. [2020-10-13 14:13:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 14:13:02,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:02,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:02,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 14:13:02,202 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:02,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:02,202 INFO L82 PathProgramCache]: Analyzing trace with hash -53762353, now seen corresponding path program 1 times [2020-10-13 14:13:02,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:02,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678598256] [2020-10-13 14:13:02,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:02,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:02,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:02,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:07,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:07,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 14:13:07,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:13:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:13:07,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:13:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:13:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:13:07,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:07,483 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:07,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:07,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:07,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:07,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:07,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:13:07,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 14:13:07,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678598256] [2020-10-13 14:13:07,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:07,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:13:07,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941598933] [2020-10-13 14:13:07,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:13:07,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:07,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:13:07,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:13:07,515 INFO L87 Difference]: Start difference. First operand 3189 states and 4166 transitions. Second operand 12 states. [2020-10-13 14:13:07,881 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 150 [2020-10-13 14:13:11,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:11,776 INFO L93 Difference]: Finished difference Result 12545 states and 16406 transitions. [2020-10-13 14:13:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:13:11,777 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-10-13 14:13:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:11,796 INFO L225 Difference]: With dead ends: 12545 [2020-10-13 14:13:11,797 INFO L226 Difference]: Without dead ends: 9425 [2020-10-13 14:13:11,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2020-10-13 14:13:11,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9425 states. [2020-10-13 14:13:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9425 to 3189. [2020-10-13 14:13:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3189 states. [2020-10-13 14:13:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 4165 transitions. [2020-10-13 14:13:12,903 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 4165 transitions. Word has length 102 [2020-10-13 14:13:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:12,903 INFO L479 AbstractCegarLoop]: Abstraction has 3189 states and 4165 transitions. [2020-10-13 14:13:12,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:13:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 4165 transitions. [2020-10-13 14:13:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 14:13:12,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:12,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:12,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 14:13:12,905 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:12,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1939949617, now seen corresponding path program 1 times [2020-10-13 14:13:12,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:12,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172608284] [2020-10-13 14:13:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:12,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:12,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:14,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:15,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:17,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 14:13:17,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:13:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:13:17,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:13:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:13:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:13:17,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:18,100 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:18,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:18,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:18,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:18,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:18,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:18,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:18,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:18,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:18,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:18,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:18,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 14:13:18,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172608284] [2020-10-13 14:13:18,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:18,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:13:18,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842545335] [2020-10-13 14:13:18,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:13:18,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:18,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:13:18,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:13:18,123 INFO L87 Difference]: Start difference. First operand 3189 states and 4165 transitions. Second operand 8 states. [2020-10-13 14:13:18,292 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:13:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:20,227 INFO L93 Difference]: Finished difference Result 7867 states and 10285 transitions. [2020-10-13 14:13:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:13:20,228 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-13 14:13:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:20,240 INFO L225 Difference]: With dead ends: 7867 [2020-10-13 14:13:20,240 INFO L226 Difference]: Without dead ends: 4747 [2020-10-13 14:13:20,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:13:20,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2020-10-13 14:13:21,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 3189. [2020-10-13 14:13:21,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3189 states. [2020-10-13 14:13:21,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 4164 transitions. [2020-10-13 14:13:21,266 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 4164 transitions. Word has length 103 [2020-10-13 14:13:21,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:21,266 INFO L479 AbstractCegarLoop]: Abstraction has 3189 states and 4164 transitions. [2020-10-13 14:13:21,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:13:21,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 4164 transitions. [2020-10-13 14:13:21,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:13:21,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:21,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:21,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 14:13:21,268 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:21,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1232492318, now seen corresponding path program 1 times [2020-10-13 14:13:21,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:21,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585376134] [2020-10-13 14:13:21,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:21,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:22,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:24,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:26,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:26,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:13:26,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:13:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:13:26,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 14:13:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:13:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:13:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:26,639 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:26,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:26,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:26,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:26,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:26,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:26,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 14:13:26,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585376134] [2020-10-13 14:13:26,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:26,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 14:13:26,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35847496] [2020-10-13 14:13:26,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 14:13:26,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:26,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 14:13:26,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:13:26,669 INFO L87 Difference]: Start difference. First operand 3189 states and 4164 transitions. Second operand 17 states. [2020-10-13 14:13:26,931 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 14:13:31,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:31,358 INFO L93 Difference]: Finished difference Result 12621 states and 16496 transitions. [2020-10-13 14:13:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:13:31,358 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 104 [2020-10-13 14:13:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:31,370 INFO L225 Difference]: With dead ends: 12621 [2020-10-13 14:13:31,370 INFO L226 Difference]: Without dead ends: 9500 [2020-10-13 14:13:31,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2020-10-13 14:13:31,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9500 states. [2020-10-13 14:13:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9500 to 3199. [2020-10-13 14:13:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-13 14:13:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4175 transitions. [2020-10-13 14:13:32,487 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4175 transitions. Word has length 104 [2020-10-13 14:13:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:32,487 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 4175 transitions. [2020-10-13 14:13:32,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 14:13:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4175 transitions. [2020-10-13 14:13:32,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 14:13:32,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:32,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:32,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 14:13:32,489 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:32,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:32,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1586116135, now seen corresponding path program 1 times [2020-10-13 14:13:32,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:32,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419018954] [2020-10-13 14:13:32,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:32,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:32,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:35,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:35,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:37,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 14:13:37,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:13:37,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:13:37,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:13:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:13:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 14:13:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:37,923 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:37,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:37,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:37,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:37,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:37,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:37,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419018954] [2020-10-13 14:13:37,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 14:13:37,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 14:13:37,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720834319] [2020-10-13 14:13:37,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:13:37,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:37,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:13:37,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:13:37,950 INFO L87 Difference]: Start difference. First operand 3199 states and 4175 transitions. Second operand 11 states. [2020-10-13 14:13:38,291 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 144 [2020-10-13 14:13:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:43,082 INFO L93 Difference]: Finished difference Result 12445 states and 16104 transitions. [2020-10-13 14:13:43,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 14:13:43,082 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-10-13 14:13:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:43,089 INFO L225 Difference]: With dead ends: 12445 [2020-10-13 14:13:43,090 INFO L226 Difference]: Without dead ends: 9331 [2020-10-13 14:13:43,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2020-10-13 14:13:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9331 states. [2020-10-13 14:13:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9331 to 5379. [2020-10-13 14:13:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5379 states. [2020-10-13 14:13:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 6996 transitions. [2020-10-13 14:13:44,773 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 6996 transitions. Word has length 105 [2020-10-13 14:13:44,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:44,773 INFO L479 AbstractCegarLoop]: Abstraction has 5379 states and 6996 transitions. [2020-10-13 14:13:44,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:13:44,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 6996 transitions. [2020-10-13 14:13:44,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 14:13:44,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:44,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:44,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 14:13:44,776 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:44,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:44,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1855268383, now seen corresponding path program 1 times [2020-10-13 14:13:44,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:44,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160438816] [2020-10-13 14:13:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:44,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:45,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:46,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:49,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:49,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 14:13:49,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:13:49,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:13:49,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:13:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 14:13:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 14:13:49,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:50,083 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 31 [2020-10-13 14:13:50,271 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:50,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:50,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:50,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:50,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 14:13:50,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:50,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:50,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:50,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160438816] [2020-10-13 14:13:50,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 14:13:50,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 14:13:50,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369186737] [2020-10-13 14:13:50,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:13:50,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:50,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:13:50,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:13:50,306 INFO L87 Difference]: Start difference. First operand 5379 states and 6996 transitions. Second operand 12 states. [2020-10-13 14:13:50,588 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-13 14:13:51,404 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-13 14:13:51,675 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-13 14:13:51,960 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-13 14:13:52,365 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-13 14:13:53,229 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-13 14:13:53,756 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-13 14:13:54,101 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-13 14:13:54,501 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-13 14:13:54,731 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-13 14:13:55,118 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-13 14:13:55,488 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-10-13 14:13:55,853 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-13 14:13:56,154 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-13 14:13:56,355 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-13 14:13:57,363 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-13 14:13:57,693 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-13 14:13:58,072 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-13 14:13:58,257 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-13 14:13:58,503 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-13 14:14:00,220 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-13 14:14:00,621 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-13 14:14:00,839 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-13 14:14:01,326 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-13 14:14:01,656 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-13 14:14:02,887 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-13 14:14:03,172 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-13 14:14:03,525 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50